The remote MiracleLinux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the AXSA:2019-3613:01 advisory.

    * ruby: OpenSSL::X509::Name equality check does not work correctly (CVE-2018-16395)
    * ruby: HTTP response splitting in WEBrick (CVE-2017-17742)
    * ruby: DoS by large request in WEBrick (CVE-2018-8777)
    * ruby: Buffer under-read in String#unpack (CVE-2018-8778)
    * ruby: Unintentional directory traversal by poisoned NULL byte in Dir (CVE-2018-8780)
    * ruby: Tainted flags are not propagated in Array#pack and String#unpack with some directives     (CVE-2018-16396)
    * rubygems: Path traversal when writing to a symlinked basedir outside of the root (CVE-2018-1000073)
    * rubygems: Unsafe Object Deserialization Vulnerability in gem owner allowing arbitrary code execution on     specially crafted YAML (CVE-2018-1000074)
    * rubygems: Improper verification of signatures in tarball allows to install mis-signed gem     (CVE-2018-1000076)
    * rubygems: Missing URL validation on spec home attribute allows malicious gem to set an invalid homepage     URL (CVE-2018-1000077)
    * rubygems: XSS vulnerability in homepage attribute when displayed via gem server (CVE-2018-1000078)
    * rubygems: Path traversal issue during gem installation allows to write to arbitrary filesystem locations     (CVE-2018-1000079)
    * ruby: Unintentional file and directory creation with directory traversal in tempfile and tmpdir     (CVE-2018-6914)
    * ruby: Unintentional socket creation by poisoned NULL byte in UNIXServer and UNIXSocket (CVE-2018-8779)
    * rubygems: Infinite loop vulnerability due to negative size in tar header causes Denial of Service     (CVE-2018-1000075)

Tenable has extracted the preceding description block directly from the MiracleLinux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

It was found that WEBrick could be forced to use an excessive amount of memory during the processing of HTTP requests, leading to a Denial of Service. An attacker could use this flaw to send huge requests to a WEBrick application, resulting in the server running out of memory.
(CVE-2018-8777)

It was found that the tmpdir and tempfile modules did not sanitize their file name argument. An attacker with control over the name could create temporary files and directories outside of the dedicated directory. (CVE-2018-6914)

It was found that WEBrick did not sanitize headers sent back to clients, resulting in a response-splitting vulnerability. An attacker, able to control the server's headers, could force WEBrick into injecting additional headers to a client. (CVE-2017-17742)

RubyGems version Ruby 2.2 series: 2.2.9 and earlier, Ruby 2.3 series:
2.3.6 and earlier, Ruby 2.4 series: 2.4.3 and earlier, Ruby 2.5 series: 2.5.0 and earlier, prior to trunk revision 62422 contains a Directory Traversal vulnerability in install_location function of package.rb that can result in path traversal when writing to a symlinked basedir outside of the root. This vulnerability appears to have been fixed in 2.7.6. (CVE-2018-1000073)

RubyGems version Ruby 2.2 series: 2.2.9 and earlier, Ruby 2.3 series:
2.3.6 and earlier, Ruby 2.4 series: 2.4.3 and earlier, Ruby 2.5 series: 2.5.0 and earlier, prior to trunk revision 62422 contains a Improper Verification of Cryptographic Signature vulnerability in package.rb that can result in a mis-signed gem could be installed, as the tarball would contain multiple gem signatures.. This vulnerability appears to have been fixed in 2.7.6. (CVE-2018-1000076)

It was found that the methods from the Dir class did not properly handle strings containing the NULL byte. An attacker, able to inject NULL bytes in a path, could possibly trigger an unspecified behavior of the ruby script. (CVE-2018-8780)

RubyGems version Ruby 2.2 series: 2.2.9 and earlier, Ruby 2.3 series:
2.3.6 and earlier, Ruby 2.4 series: 2.4.3 and earlier, Ruby 2.5 series: 2.5.0 and earlier, prior to trunk revision 62422 contains a infinite loop caused by negative size vulnerability in ruby gem package tar header that can result in a negative size could cause an infinite loop.. This vulnerability appears to have been fixed in 2.7.6. (CVE-2018-1000075)

RubyGems version Ruby 2.2 series: 2.2.9 and earlier, Ruby 2.3 series:
2.3.6 and earlier, Ruby 2.4 series: 2.4.3 and earlier, Ruby 2.5 series: 2.5.0 and earlier, prior to trunk revision 62422 contains a Cross Site Scripting (XSS) vulnerability in gem server display of homepage attribute that can result in XSS. This attack appear to be exploitable via the victim must browse to a malicious gem on a vulnerable gem server. This vulnerability appears to have been fixed in 2.7.6. (CVE-2018-1000078)

An issue was discovered in Ruby before 2.3.8, 2.4.x before 2.4.5, 2.5.x before 2.5.2, and 2.6.x before 2.6.0-preview3. It does not taint strings that result from unpacking tainted strings with some formats.
(CVE-2018-16396)

A integer underflow was found in the way String#unpack decodes the unpacking format. An attacker, able to control the unpack format, could use this flaw to disclose arbitrary parts of the application's memory. (CVE-2018-8778)

It was found that the UNIXSocket::open and UNIXServer::open ruby methods did not handle the NULL byte properly. An attacker, able to inject NULL bytes in the socket path, could possibly trigger an unspecified behavior of the ruby script. (CVE-2018-8779)

RubyGems version Ruby 2.2 series: 2.2.9 and earlier, Ruby 2.3 series:
2.3.6 and earlier, Ruby 2.4 series: 2.4.3 and earlier, Ruby 2.5 series: 2.5.0 and earlier, prior to trunk revision 62422 contains a Deserialization of Untrusted Data vulnerability in owner command that can result in code execution. This attack appear to be exploitable via victim must run the `gem owner` command on a gem with a specially crafted YAML file. This vulnerability appears to have been fixed in 2.7.6. (CVE-2018-1000074)

RubyGems version Ruby 2.2 series: 2.2.9 and earlier, Ruby 2.3 series:
2.3.6 and earlier, Ruby 2.4 series: 2.4.3 and earlier, Ruby 2.5 series: 2.5.0 and earlier, prior to trunk revision 62422 contains a Improper Input Validation vulnerability in ruby gems specification homepage attribute that can result in a malicious gem could set an invalid homepage URL. This vulnerability appears to have been fixed in 2.7.6. (CVE-2018-1000077)

RubyGems version Ruby 2.2 series: 2.2.9 and earlier, Ruby 2.3 series:
2.3.6 and earlier, Ruby 2.4 series: 2.4.3 and earlier, Ruby 2.5 series: 2.5.0 and earlier, prior to trunk revision 62422 contains a Directory Traversal vulnerability in gem installation that can result in the gem could write to arbitrary filesystem locations during installation. This attack appear to be exploitable via the victim must install a malicious gem. This vulnerability appears to have been fixed in 2.7.6. (CVE-2018-1000079)

An update for ruby is now available for Red Hat Enterprise Linux 7.

Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

Ruby is an extensible, interpreted, object-oriented, scripting language. It has features to process text files and to perform system management tasks.

Security Fix(es) :

* ruby: HTTP response splitting in WEBrick (CVE-2017-17742)

* ruby: DoS by large request in WEBrick (CVE-2018-8777)

* ruby: Buffer under-read in String#unpack (CVE-2018-8778)

* ruby: Unintentional directory traversal by poisoned NULL byte in Dir (CVE-2018-8780)

* ruby: Tainted flags are not propagated in Array#pack and String#unpack with some directives (CVE-2018-16396)

* rubygems: Path traversal when writing to a symlinked basedir outside of the root (CVE-2018-1000073)

* rubygems: Unsafe Object Deserialization Vulnerability in gem owner allowing arbitrary code execution on specially crafted YAML (CVE-2018-1000074)

* rubygems: Improper verification of signatures in tarball allows to install mis-signed gem (CVE-2018-1000076)

* rubygems: Missing URL validation on spec home attribute allows malicious gem to set an invalid homepage URL (CVE-2018-1000077)

* rubygems: XSS vulnerability in homepage attribute when displayed via gem server (CVE-2018-1000078)

* rubygems: Path traversal issue during gem installation allows to write to arbitrary filesystem locations (CVE-2018-1000079)

* ruby: Unintentional file and directory creation with directory traversal in tempfile and tmpdir (CVE-2018-6914)

* ruby: Unintentional socket creation by poisoned NULL byte in UNIXServer and UNIXSocket (CVE-2018-8779)

* rubygems: Infinite loop vulnerability due to negative size in tar header causes Denial of Service (CVE-2018-1000075)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Additional Changes :

For detailed information on changes in this release, see the Red Hat Enterprise Linux 7.7 Release Notes linked from the References section.

The remote NewStart CGSL host, running version CORE 5.05 / MAIN 5.05, has ruby packages installed that are affected by multiple vulnerabilities:

  - In Ruby before 2.2.10, 2.3.x before 2.3.7, 2.4.x before     2.4.4, 2.5.x before 2.5.1, and 2.6.0-preview1, an     attacker controlling the unpacking format (similar to     format string vulnerabilities) can trigger a buffer     under-read in the String#unpack method, resulting in a     massive and controlled information disclosure.
    (CVE-2018-8778)

  - RubyGems version Ruby 2.2 series: 2.2.9 and earlier,     Ruby 2.3 series: 2.3.6 and earlier, Ruby 2.4 series:
    2.4.3 and earlier, Ruby 2.5 series: 2.5.0 and earlier,     prior to trunk revision 62422 contains a Directory     Traversal vulnerability in install_location function of     package.rb that can result in path traversal when     writing to a symlinked basedir outside of the root. This     vulnerability appears to have been fixed in 2.7.6.
    (CVE-2018-1000073)

  - In Ruby before 2.2.10, 2.3.x before 2.3.7, 2.4.x before     2.4.4, 2.5.x before 2.5.1, and 2.6.0-preview1, the     Dir.open, Dir.new, Dir.entries and Dir.empty? methods do     not check NULL characters. When using the corresponding     method, unintentional directory traversal may be     performed. (CVE-2018-8780)

  - Directory traversal vulnerability in the Dir.mktmpdir     method in the tmpdir library in Ruby before 2.2.10,     2.3.x before 2.3.7, 2.4.x before 2.4.4, 2.5.x before     2.5.1, and 2.6.0-preview1 might allow attackers to     create arbitrary directories or files via a .. (dot dot)     in the prefix argument. (CVE-2018-6914)

  - In Ruby before 2.2.10, 2.3.x before 2.3.7, 2.4.x before     2.4.4, 2.5.x before 2.5.1, and 2.6.0-preview1, an     attacker can pass a large HTTP request with a crafted     header to WEBrick server or a crafted body to WEBrick     server/handler and cause a denial of service (memory     consumption). (CVE-2018-8777)

  - Ruby before 2.2.10, 2.3.x before 2.3.7, 2.4.x before     2.4.4, 2.5.x before 2.5.1, and 2.6.0-preview1 allows an     HTTP Response Splitting attack. An attacker can inject a     crafted key and value into an HTTP response for the HTTP     server of WEBrick. (CVE-2017-17742)

  - RubyGems version Ruby 2.2 series: 2.2.9 and earlier,     Ruby 2.3 series: 2.3.6 and earlier, Ruby 2.4 series:
    2.4.3 and earlier, Ruby 2.5 series: 2.5.0 and earlier,     prior to trunk revision 62422 contains a Deserialization     of Untrusted Data vulnerability in owner command that     can result in code execution. This attack appear to be     exploitable via victim must run the `gem owner` command     on a gem with a specially crafted YAML file. This     vulnerability appears to have been fixed in 2.7.6.
    (CVE-2018-1000074)

  - RubyGems version Ruby 2.2 series: 2.2.9 and earlier,     Ruby 2.3 series: 2.3.6 and earlier, Ruby 2.4 series:
    2.4.3 and earlier, Ruby 2.5 series: 2.5.0 and earlier,     prior to trunk revision 62422 contains a Cross Site     Scripting (XSS) vulnerability in gem server display of     homepage attribute that can result in XSS. This attack     appear to be exploitable via the victim must browse to a     malicious gem on a vulnerable gem server. This     vulnerability appears to have been fixed in 2.7.6.
    (CVE-2018-1000078)

  - RubyGems version Ruby 2.2 series: 2.2.9 and earlier,     Ruby 2.3 series: 2.3.6 and earlier, Ruby 2.4 series:
    2.4.3 and earlier, Ruby 2.5 series: 2.5.0 and earlier,     prior to trunk revision 62422 contains a Directory     Traversal vulnerability in gem installation that can     result in the gem could write to arbitrary filesystem     locations during installation. This attack appear to be     exploitable via the victim must install a malicious gem.
    This vulnerability appears to have been fixed in 2.7.6.
    (CVE-2018-1000079)

  - An issue was discovered in Ruby before 2.3.8, 2.4.x     before 2.4.5, 2.5.x before 2.5.2, and 2.6.x before     2.6.0-preview3. It does not taint strings that result     from unpacking tainted strings with some formats.
    (CVE-2018-16396)

  - In Ruby before 2.2.10, 2.3.x before 2.3.7, 2.4.x before     2.4.4, 2.5.x before 2.5.1, and 2.6.0-preview1, the     UNIXServer.open and UNIXSocket.open methods are not     checked for null characters. It may be connected to an     unintended socket. (CVE-2018-8779)

  - RubyGems version Ruby 2.2 series: 2.2.9 and earlier,     Ruby 2.3 series: 2.3.6 and earlier, Ruby 2.4 series:
    2.4.3 and earlier, Ruby 2.5 series: 2.5.0 and earlier,     prior to trunk revision 62422 contains a infinite loop     caused by negative size vulnerability in ruby gem     package tar header that can result in a negative size     could cause an infinite loop.. This vulnerability     appears to have been fixed in 2.7.6. (CVE-2018-1000075)

  - RubyGems version Ruby 2.2 series: 2.2.9 and earlier,     Ruby 2.3 series: 2.3.6 and earlier, Ruby 2.4 series:
    2.4.3 and earlier, Ruby 2.5 series: 2.5.0 and earlier,     prior to trunk revision 62422 contains a Improper     Verification of Cryptographic Signature vulnerability in     package.rb that can result in a mis-signed gem could be     installed, as the tarball would contain multiple gem     signatures.. This vulnerability appears to have been     fixed in 2.7.6. (CVE-2018-1000076)

  - RubyGems version Ruby 2.2 series: 2.2.9 and earlier,     Ruby 2.3 series: 2.3.6 and earlier, Ruby 2.4 series:
    2.4.3 and earlier, Ruby 2.5 series: 2.5.0 and earlier,     prior to trunk revision 62422 contains a Improper Input     Validation vulnerability in ruby gems specification     homepage attribute that can result in a malicious gem     could set an invalid homepage URL. This vulnerability     appears to have been fixed in 2.7.6. (CVE-2018-1000077)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote Redhat Enterprise Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2020:0542 advisory.

    Ruby is an extensible, interpreted, object-oriented, scripting language. It has features to process text     files and to perform system management tasks.

    Security Fix(es):

    * ruby: DoS by large request in WEBrick (CVE-2018-8777)

    * ruby: Unintentional directory traversal by poisoned NULL byte in Dir (CVE-2018-8780)

    * rubygems: Path traversal when writing to a symlinked basedir outside of the root (CVE-2018-1000073)

    * rubygems: Unsafe Object Deserialization Vulnerability in gem owner allowing arbitrary code execution on     specially crafted YAML (CVE-2018-1000074)

    * rubygems: Improper verification of signatures in tarball allows to install mis-signed gem     (CVE-2018-1000076)

    * rubygems: Missing URL validation on spec home attribute allows malicious gem to set an invalid homepage     URL (CVE-2018-1000077)

    * rubygems: XSS vulnerability in homepage attribute when displayed via gem server (CVE-2018-1000078)

    * rubygems: Path traversal issue during gem installation allows to write to arbitrary filesystem locations     (CVE-2018-1000079)

    * rubygems: Infinite loop vulnerability due to negative size in tar header causes Denial of Service     (CVE-2018-1000075)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and     other related information, refer to the CVE page(s) listed in the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Multiple vulnerabilities were found in the interpreter for the Ruby language. The Common Vulnerabilities and Exposures project identifies the following issues :

CVE-2015-9096

SMTP command injection in Net::SMTP via CRLF sequences in a RCPT TO or MAIL FROM command.

CVE-2016-2339

Exploitable heap overflow in Fiddle::Function.new.

CVE-2016-7798

Incorrect handling of initialization vector in the GCM mode in the OpenSSL extension.

CVE-2017-0898

Buffer underrun vulnerability in Kernel.sprintf.

CVE-2017-0899

ANSI escape sequence vulnerability in RubyGems.

CVE-2017-0900

DoS vulnerability in the RubyGems query command.

CVE-2017-0901

gem installer allowed a malicious gem to overwrite arbitrary files.

CVE-2017-0902

RubyGems DNS request hijacking vulnerability.

CVE-2017-0903

Max Justicz reported that RubyGems is prone to an unsafe object deserialization vulnerability. When parsed by an application which processes gems, a specially crafted YAML formatted gem specification can lead to remote code execution.

CVE-2017-10784

Yusuke Endoh discovered an escape sequence injection vulnerability in the Basic authentication of WEBrick. An attacker can take advantage of this flaw to inject malicious escape sequences to the WEBrick log and potentially execute control characters on the victim's terminal emulator when reading logs.

CVE-2017-14033

asac reported a buffer underrun vulnerability in the OpenSSL extension. A remote attacker could take advantage of this flaw to cause the Ruby interpreter to crash leading to a denial of service.

CVE-2017-14064

Heap memory disclosure in the JSON library.

CVE-2017-17405

A command injection vulnerability in Net::FTP might allow a malicious FTP server to execute arbitrary commands.

CVE-2017-17742

Aaron Patterson reported that WEBrick bundled with Ruby was vulnerable to an HTTP response splitting vulnerability. It was possible for an attacker to inject fake HTTP responses if a script accepted an external input and output it without modifications.

CVE-2017-17790

A command injection vulnerability in lib/resolv.rb's lazy_initialze might allow a command injection attack. However untrusted input to this function is rather unlikely.

CVE-2018-6914

ooooooo_q discovered a directory traversal vulnerability in the Dir.mktmpdir method in the tmpdir library. It made it possible for attackers to create arbitrary directories or files via a .. (dot dot) in the prefix argument.

CVE-2018-8777

Eric Wong reported an out-of-memory DoS vulnerability related to a large request in WEBrick bundled with Ruby.

CVE-2018-8778

aerodudrizzt found a buffer under-read vulnerability in the Ruby String#unpack method. If a big number was passed with the specifier @, the number was treated as a negative value, and an out-of-buffer read occurred. Attackers could read data on heaps if an script accepts an external input as the argument of String#unpack.

CVE-2018-8779

ooooooo_q reported that the UNIXServer.open and UNIXSocket.open methods of the socket library bundled with Ruby did not check for NUL bytes in the path argument. The lack of check made the methods vulnerable to unintentional socket creation and unintentional socket access.

CVE-2018-8780

ooooooo_q discovered an unintentional directory traversal in some methods in Dir, by the lack of checking for NUL bytes in their parameter.

CVE-2018-1000075

A negative size vulnerability in ruby gem package tar header that could cause an infinite loop.

CVE-2018-1000076

RubyGems package improperly verifies cryptographic signatures. A mis-signed gem could be installed if the tarball contains multiple gem signatures.

CVE-2018-1000077

An improper input validation vulnerability in RubyGems specification homepage attribute could allow malicious gem to set an invalid homepage URL.

CVE-2018-1000078

Cross Site Scripting (XSS) vulnerability in gem server display of homepage attribute.

CVE-2018-1000079

Path Traversal vulnerability during gem installation.

For Debian 8 'Jessie', these problems have been fixed in version 2.1.5-2+deb8u4.

We recommend that you upgrade your ruby2.1 packages.

NOTE: Tenable Network Security has extracted the preceding description block directly from the DLA security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

This update for ruby2.5 and ruby-bundled-gems-rpmhelper fixes the following issues :

Changes in ruby2.5 :

Update to 2.5.5 and 2.5.4 :

https://www.ruby-lang.org/en/news/2019/03/15/ruby-2-5-5-released/ https://www.ruby-lang.org/en/news/2019/03/13/ruby-2-5-4-released/

Security issues fixed :

CVE-2019-8320: Delete directory using symlink when decompressing tar (bsc#1130627)

CVE-2019-8321: Escape sequence injection vulnerability in verbose (bsc#1130623)

CVE-2019-8322: Escape sequence injection vulnerability in gem owner (bsc#1130622)

CVE-2019-8323: Escape sequence injection vulnerability in API response handling (bsc#1130620)

CVE-2019-8324: Installing a malicious gem may lead to arbitrary code execution (bsc#1130617)

CVE-2019-8325: Escape sequence injection vulnerability in errors (bsc#1130611)

Ruby 2.5 was updated to 2.5.3 :

This release includes some bug fixes and some security fixes.

Security issues fixed: CVE-2018-16396: Tainted flags are not propagated in Array#pack and String#unpack with some directives (bsc#1112532)

CVE-2018-16395: OpenSSL::X509::Name equality check does not work correctly (bsc#1112530)

Ruby 2.5 was updated to 2.5.1 :

This release includes some bug fixes and some security fixes.

Security issues fixed: CVE-2017-17742: HTTP response splitting in WEBrick (bsc#1087434)

CVE-2018-6914: Unintentional file and directory creation with directory traversal in tempfile and tmpdir (bsc#1087441)

CVE-2018-8777: DoS by large request in WEBrick (bsc#1087436)

CVE-2018-8778: Buffer under-read in String#unpack (bsc#1087433)

CVE-2018-8779: Unintentional socket creation by poisoned NUL byte in UNIXServer and UNIXSocket (bsc#1087440)

CVE-2018-8780: Unintentional directory traversal by poisoned NUL byte in Dir (bsc#1087437)

Multiple vulnerabilities in RubyGems were fixed :

  - CVE-2018-1000079: Fixed path traversal issue during gem     installation allows to write to arbitrary filesystem     locations (bsc#1082058)

  - CVE-2018-1000075: Fixed infinite loop vulnerability due     to negative size in tar header causes Denial of Service     (bsc#1082014)

  - CVE-2018-1000078: Fixed XSS vulnerability in homepage     attribute when displayed via gem server (bsc#1082011)

  - CVE-2018-1000077: Fixed that missing URL validation on     spec home attribute allows malicious gem to set an     invalid homepage URL (bsc#1082010)

  - CVE-2018-1000076: Fixed improper verification of     signatures in tarball allows to install mis-signed gem     (bsc#1082009)

  - CVE-2018-1000074: Fixed unsafe Object Deserialization     Vulnerability in gem owner allowing arbitrary code     execution on specially crafted YAML (bsc#1082008)

  - CVE-2018-1000073: Fixed path traversal when writing to a     symlinked basedir outside of the root (bsc#1082007)

Other changes: Fixed Net::POPMail methods modify frozen literal when using default arg

ruby: change over of the Japanese Era to the new emperor May 1st 2019 (bsc#1133790)

build with PIE support (bsc#1130028)

Changes in ruby-bundled-gems-rpmhelper: Add a new helper for bundled ruby gems.

Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

The remote Redhat Enterprise Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2018:3731 advisory.

  - ruby: HTTP response splitting in WEBrick (CVE-2017-17742)

  - ruby: Unintentional file and directory creation with directory traversal in tempfile and tmpdir     (CVE-2018-6914)

  - ruby: DoS by large request in WEBrick (CVE-2018-8777)

  - ruby: Buffer under-read in String#unpack (CVE-2018-8778)

  - ruby: Unintentional socket creation by poisoned NULL byte in UNIXServer and UNIXSocket (CVE-2018-8779)

  - ruby: Unintentional directory traversal by poisoned NULL byte in Dir (CVE-2018-8780)

  - ruby: OpenSSL::X509::Name equality check does not work correctly (CVE-2018-16395)

  - ruby: Tainted flags are not propagated in Array#pack and String#unpack with some directives     (CVE-2018-16396)

  - rubygems: Path traversal when writing to a symlinked basedir outside of the root (CVE-2018-1000073)

  - rubygems: Unsafe Object Deserialization Vulnerability in gem owner allowing arbitrary code execution on     specially crafted YAML (CVE-2018-1000074)

  - rubygems: Infinite loop vulnerability due to negative size in tar header causes Denial of Service     (CVE-2018-1000075)

  - rubygems: Improper verification of signatures in tarball allows to install mis-signed gem     (CVE-2018-1000076)

  - rubygems: Missing URL validation on spec home attribute allows malicious gem to set an invalid homepage     URL (CVE-2018-1000077)

  - rubygems: XSS vulnerability in homepage attribute when displayed via gem server (CVE-2018-1000078)

  - rubygems: Path traversal issue during gem installation allows to write to arbitrary filesystem locations     (CVE-2018-1000079)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Path traversal when writing to a symlinked basedir outside of the root

RubyGems version Ruby 2.2 series: 2.2.9 and earlier, Ruby 2.3 series:
2.3.6 and earlier, Ruby 2.4 series: 2.4.3 and earlier, Ruby 2.5 series: 2.5.0 and earlier, prior to trunk revision 62422 contains a Directory Traversal vulnerability in install_location function of package.rb that can result in path traversal when writing to a symlinked basedir outside of the root. This vulnerability appears to have been fixed in 2.7.6. (CVE-2018-1000073)

Improper verification of signatures in tarball allows to install mis-signed gem :

RubyGems version Ruby 2.2 series: 2.2.9 and earlier, Ruby 2.3 series:
2.3.6 and earlier, Ruby 2.4 series: 2.4.3 and earlier, Ruby 2.5 series: 2.5.0 and earlier, prior to trunk revision 62422 contains a Improper Verification of Cryptographic Signature vulnerability in package.rb that can result in a mis-signed gem could be installed, as the tarball would contain multiple gem signatures.. This vulnerability appears to have been fixed in 2.7.6. (CVE-2018-1000076)

Infinite loop vulnerability due to negative size in tar header causes Denial of Service

RubyGems version Ruby 2.2 series: 2.2.9 and earlier, Ruby 2.3 series:
2.3.6 and earlier, Ruby 2.4 series: 2.4.3 and earlier, Ruby 2.5 series: 2.5.0 and earlier, prior to trunk revision 62422 contains a infinite loop caused by negative size vulnerability in ruby gem package tar header that can result in a negative size could cause an infinite loop.. This vulnerability appears to have been fixed in 2.7.6. (CVE-2018-1000075)

Command injection in lib/resolv.rb:lazy_initialize() allows arbitrary code execution :

The 'lazy_initialize' function in lib/resolv.rb did not properly process certain filenames. A remote attacker could possibly exploit this flaw to inject and execute arbitrary commands. (CVE-2017-17790)

Missing URL validation on spec home attribute allows malicious gem to set an invalid homepage URL :

RubyGems version Ruby 2.2 series: 2.2.9 and earlier, Ruby 2.3 series:
2.3.6 and earlier, Ruby 2.4 series: 2.4.3 and earlier, Ruby 2.5 series: 2.5.0 and earlier, prior to trunk revision 62422 contains a Improper Input Validation vulnerability in ruby gems specification homepage attribute that can result in a malicious gem could set an invalid homepage URL. This vulnerability appears to have been fixed in 2.7.6. (CVE-2018-1000077)

XSS vulnerability in homepage attribute when displayed via gem server

RubyGems version Ruby 2.2 series: 2.2.9 and earlier, Ruby 2.3 series:
2.3.6 and earlier, Ruby 2.4 series: 2.4.3 and earlier, Ruby 2.5 series: 2.5.0 and earlier, prior to trunk revision 62422 contains a Cross Site Scripting (XSS) vulnerability in gem server display of homepage attribute that can result in XSS. This attack appear to be exploitable via the victim must browse to a malicious gem on a vulnerable gem server. This vulnerability appears to have been fixed in 2.7.6. (CVE-2018-1000078)

Unsafe Object Deserialization Vulnerability in gem owner allowing arbitrary code execution on specially crafted YAML

RubyGems version Ruby 2.2 series: 2.2.9 and earlier, Ruby 2.3 series:
2.3.6 and earlier, Ruby 2.4 series: 2.4.3 and earlier, Ruby 2.5 series: 2.5.0 and earlier, prior to trunk revision 62422 contains a Deserialization of Untrusted Data vulnerability in owner command that can result in code execution. This attack appear to be exploitable via victim must run the `gem owner` command on a gem with a specially crafted YAML file. This vulnerability appears to have been fixed in 2.7.6. (CVE-2018-1000074)

Path traversal issue during gem installation allows to write to arbitrary filesystem locations

RubyGems version Ruby 2.2 series: 2.2.9 and earlier, Ruby 2.3 series:
2.3.6 and earlier, Ruby 2.4 series: 2.4.3 and earlier, Ruby 2.5 series: 2.5.0 and earlier, prior to trunk revision 62422 contains a Directory Traversal vulnerability in gem installation that can result in the gem could write to arbitrary filesystem locations during installation. This attack appear to be exploitable via the victim must install a malicious gem. This vulnerability appears to have been fixed in 2.7.6. (CVE-2018-1000079)

If a script accepts an external input and outputs it without modification as a part of HTTP responses, an attacker can use newline characters to deceive the clients that the HTTP response header is stopped at there, and can inject fake HTTP responses after the newline characters to show malicious contents to the clients.(CVE-2017-17742)

The Dir.mktmpdir method introduced by tmpdir library accepts the prefix and the suffix of the directory which is created as the first parameter. The prefix can contain relative directory specifiers '../', so this method can be used to target any directory. So, if a script accepts an external input as the prefix, and the targeted directory has inappropriate permissions or the ruby process has inappropriate privileges, the attacker can create a directory or a file at any directory.(CVE-2018-6914)

If an attacker sends a large request which contains huge HTTP headers, WEBrick try to process it on memory, so the request causes the out-of-memory DoS attack.(CVE-2018-8777)

String#unpack receives format specifiers as its parameter, and can be specified the position of parsing the data by the specifier @. If a big number is passed with @, the number is treated as the negative value, and out-of-buffer read is occurred. So, if a script accepts an external input as the argument of String#unpack, the attacker can read data on heaps.(CVE-2018-8778)

UNIXServer.open accepts the path of the socket to be created at the first parameter. If the path contains NUL (\0) bytes, this method recognize that the path is completed before the NUL bytes. So, if a script accepts an external input as the argument of this method, the attacker can make the socket file in the unintentional path. And, UNIXSocket.open also accepts the path of the socket to be created at the first parameter without checking NUL bytes like UNIXServer.open.
So, if a script accepts an external input as the argument of this method, the attacker can accepts the socket file in the unintentional path.(CVE-2018-8779)

Dir.open, Dir.new, Dir.entries and Dir.empty? accept the path of the target directory as their parameter. If the parameter contains NUL (\0) bytes, these methods recognize that the path is completed before the NUL bytes. So, if a script accepts an external input as the argument of these methods, the attacker can make the unintentional directory traversal.(CVE-2018-8780)

Multiple vulnerabilities were found in the interpreter for the Ruby language. The Common Vulnerabilities and Exposures project identifies the following issues :

CVE-2017-17742

Aaron Patterson reported that WEBrick bundled with Ruby was vulnerable to an HTTP response splitting vulnerability. It was possible for an attacker to inject fake HTTP responses if a script accepted an external input and output it without modifications.

CVE-2018-6914

ooooooo_q discovered a directory traversal vulnerability in the Dir.mktmpdir method in the tmpdir library. It made it possible for attackers to create arbitrary directories or files via a .. (dot dot) in the prefix argument.

CVE-2018-8777

Eric Wong reported an out-of-memory DoS vulnerability related to a large request in WEBrick bundled with Ruby.

CVE-2018-8778

aerodudrizzt found a buffer under-read vulnerability in the Ruby String#unpack method. If a big number was passed with the specifier @, the number was treated as a negative value, and an out-of-buffer read occurred. Attackers could read data on heaps if an script accepts an external input as the argument of String#unpack.

CVE-2018-8779

ooooooo_q reported that the UNIXServer.open and UNIXSocket.open methods of the socket library bundled with Ruby did not check for NUL bytes in the path argument. The lack of check made the methods vulnerable to unintentional socket creation and unintentional socket access.

CVE-2018-8780

ooooooo_q discovered an unintentional directory traversal in some methods in Dir, by the lack of checking for NUL bytes in their parameter.

CVE-2018-1000075

A negative size vulnerability in ruby gem package tar header that could cause an infinite loop.

CVE-2018-1000076

Ruby gems package improperly verifies cryptographic signatures. A mis-signed gem could be installed if the tarball contains multiple gem signatures.

CVE-2018-1000077

An improper input validation vulnerability in ruby gems specification homepage attribute could allow malicious gem to set an invalid homepage URL.

CVE-2018-1000078

Cross Site Scripting (XSS) vulnerability in gem server display of homepage attribute

For Debian 7 'Wheezy', these problems have been fixed in version 1.9.3.194-8.1+deb7u8.

We recommend that you upgrade your ruby1.9.1 packages.

NOTE: Tenable Network Security has extracted the preceding description block directly from the DLA security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

This update for ruby2.5 and ruby-bundled-gems-rpmhelper fixes the following issues :

Changes in ruby2.5 :

Update to 2.5.5 and 2.5.4 :

https://www.ruby-lang.org/en/news/2019/03/15/ruby-2-5-5-released/ https://www.ruby-lang.org/en/news/2019/03/13/ruby-2-5-4-released/

Security issues fixed :

  - CVE-2019-8320: Delete directory using symlink when     decompressing tar (bsc#1130627)

  - CVE-2019-8321: Escape sequence injection vulnerability     in verbose (bsc#1130623)

  - CVE-2019-8322: Escape sequence injection vulnerability     in gem owner (bsc#1130622)

  - CVE-2019-8323: Escape sequence injection vulnerability     in API response handling (bsc#1130620)

  - CVE-2019-8324: Installing a malicious gem may lead to     arbitrary code execution (bsc#1130617)

  - CVE-2019-8325: Escape sequence injection vulnerability     in errors (bsc#1130611)

Ruby 2.5 was updated to 2.5.3 :

This release includes some bug fixes and some security fixes.

Security issues fixed :

  - CVE-2018-16396: Tainted flags are not propagated in     Array#pack and String#unpack with some directives     (bsc#1112532)

  - CVE-2018-16395: OpenSSL::X509::Name equality check does     not work correctly (bsc#1112530)

Ruby 2.5 was updated to 2.5.1 :

This release includes some bug fixes and some security fixes.

Security issues fixed :

  - CVE-2017-17742: HTTP response splitting in WEBrick     (bsc#1087434)

  - CVE-2018-6914: Unintentional file and directory creation     with directory traversal in tempfile and tmpdir     (bsc#1087441)

  - CVE-2018-8777: DoS by large request in WEBrick     (bsc#1087436)

  - CVE-2018-8778: Buffer under-read in String#unpack     (bsc#1087433)

  - CVE-2018-8779: Unintentional socket creation by poisoned     NUL byte in UNIXServer and UNIXSocket (bsc#1087440)

  - CVE-2018-8780: Unintentional directory traversal by     poisoned NUL byte in Dir (bsc#1087437)

  - Multiple vulnerabilities in RubyGems were fixed :

  - CVE-2018-1000079: Fixed path traversal issue during gem     installation allows to write to arbitrary filesystem     locations (bsc#1082058)

  - CVE-2018-1000075: Fixed infinite loop vulnerability due     to negative size in tar header causes Denial of Service     (bsc#1082014)

  - CVE-2018-1000078: Fixed XSS vulnerability in homepage     attribute when displayed via gem server (bsc#1082011)

  - CVE-2018-1000077: Fixed that missing URL validation on     spec home attribute allows malicious gem to set an     invalid homepage URL (bsc#1082010)

  - CVE-2018-1000076: Fixed improper verification of     signatures in tarball allows to install mis-signed gem     (bsc#1082009)

  - CVE-2018-1000074: Fixed unsafe Object Deserialization     Vulnerability in gem owner allowing arbitrary code     execution on specially crafted YAML (bsc#1082008)

  - CVE-2018-1000073: Fixed path traversal when writing to a     symlinked basedir outside of the root (bsc#1082007)

Other changes :

  - Fixed Net::POPMail methods modify frozen literal when     using default arg

  - ruby: change over of the Japanese Era to the new emperor     May 1st 2019 (bsc#1133790)

  - build with PIE support (bsc#1130028)

Changes in ruby-bundled-gems-rpmhelper :

  - Add a new helper for bundled ruby gems.

This update was imported from the SUSE:SLE-15:Update update project.

ID	Name	Product	Family	Published	Updated	Severity
289679	MiracleLinux 7 : rh-ruby25-ruby-2.5.3-6.el7 (AXSA:2019-3613:01)	Nessus	Miracle Linux Local Security Checks	1/16/2026	1/16/2026	critical
128290	Amazon Linux 2 : ruby (ALAS-2019-1276)	Nessus	Amazon Linux Local Security Checks	8/28/2019	5/1/2024	critical
128332	CentOS 7 : ruby (CESA-2019:2028)	Nessus	CentOS Local Security Checks	8/30/2019	5/19/2022	critical
132492	NewStart CGSL CORE 5.05 / MAIN 5.05 : ruby Multiple Vulnerabilities (NS-SA-2019-0245)	Nessus	NewStart CGSL Local Security Checks	12/31/2019	5/18/2022	critical
133785	RHEL 7 : ruby (RHSA-2020:0542)	Nessus	Red Hat Local Security Checks	2/19/2020	11/7/2024	critical
111081	Debian DLA-1421-1 : ruby2.1 security update	Nessus	Debian Local Security Checks	7/16/2018	9/4/2024	critical
126617	SUSE SLED15 / SLES15 Security Update : ruby-bundled-gems-rpmhelper, ruby2.5 (SUSE-SU-2019:1804-1)	Nessus	SuSE Local Security Checks	7/11/2019	5/10/2024	critical
194050	RHEL 7 : rh-ruby25-ruby (RHSA-2018:3731)	Nessus	Red Hat Local Security Checks	4/27/2024	4/27/2024	critical
108846	Amazon Linux AMI : ruby20 / ruby22,ruby23,ruby24 (ALAS-2018-983)	Nessus	Amazon Linux Local Security Checks	4/6/2018	11/20/2024	critical
109283	Debian DLA-1358-1 : ruby1.9.1 security update	Nessus	Debian Local Security Checks	4/24/2018	10/25/2024	critical
126904	openSUSE Security Update : ruby-bundled-gems-rpmhelper / ruby2.5 (openSUSE-2019-1771)	Nessus	SuSE Local Security Checks	7/22/2019	5/9/2024	critical

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