An issue was discovered in Perl 5.18 through 5.26. A crafted regular expression can cause a heap-based buffer overflow, with control over the bytes written.

The remote NewStart CGSL host, running version MAIN 6.06, has perl packages installed that are affected by multiple vulnerabilities:

  - Heap-based buffer overflow in the pack function in Perl before 5.26.2 allows context-dependent attackers     to execute arbitrary code via a large item count. (CVE-2018-6913)

  - Directory traversal vulnerability in the Archive::Tar Perl module 1.36 and earlier allows user-assisted     remote attackers to overwrite arbitrary files via a TAR archive that contains a file whose name is an     absolute path or has .. sequences. (CVE-2007-4829)

  - The rmtree function in lib/File/Path.pm in Perl 5.10 does not properly check permissions before performing     a chmod, which allows local users to modify the permissions of arbitrary files via a symlink attack, a     different vulnerability than CVE-2005-0448 and CVE-2004-0452. (CVE-2008-2827)

  - Perl 5.10.1 allows context-dependent attackers to cause a denial of service (application crash) via a     UTF-8 character with a large, invalid codepoint, which is not properly handled during a regular-expression     match. (CVE-2009-3626)

  - The bsd_glob function in the File::Glob module for Perl before 5.14.2 allows context-dependent attackers     to cause a denial of service (crash) via a glob expression with the GLOB_ALTDIRFUNC flag, which triggers     an uninitialized pointer dereference. (CVE-2011-2728)

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

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - An issue was discovered in Perl 5.18 through 5.26. A crafted regular expression can cause a heap-based     buffer overflow, with control over the bytes written. (CVE-2018-6797)

Note that Nessus relies on the presence of the package as reported by the vendor.

The remote Redhat Enterprise Linux 6 / 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2018:1192 advisory.

    Perl is a high-level programming language that is commonly used for system administration utilities and     web programming.

    Security Fix(es):

    * perl: heap write overflow in regcomp.c (CVE-2018-6797)

    * perl: heap read overflow in regexec.c (CVE-2018-6798)

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

    Red Hat would like to thank Perl 5 Porters for reporting these issues. Upstream acknowledges Brian     Carpenter as the original reporter of CVE-2018-6797; and Nguyen Duc Manh as the original reporter of     CVE-2018-6798.

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.

According to the versions of the perl packages installed, the EulerOS Virtualization for ARM 64 installation on the remote host is affected by the following vulnerabilities :

  - An issue was discovered in Perl 5.18 through 5.26. A     crafted regular expression can cause a heap-based     buffer overflow, with control over the bytes     written.(CVE-2018-6797)

  - An issue was discovered in Perl 5.22 through 5.26.
    Matching a crafted locale dependent regular expression     can cause a heap-based buffer over-read and potentially     information disclosure.(CVE-2018-6798)

  - Heap-based buffer overflow in the pack function in Perl     before 5.26.2 allows context-dependent attackers to     execute arbitrary code via a large item     count.(CVE-2018-6913)

  - Perl before 5.26.3 and 5.28.0 before 5.28.1 has a     buffer overflow via a crafted regular expression that     triggers invalid write operations.(CVE-2018-18312)

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

The remote host is affected by the vulnerability described in GLSA-201909-01 (Perl: Multiple vulnerabilities)

    Multiple vulnerabilities have been discovered in Perl. Please review the       CVE identifiers referenced below for details.
  Impact :

    Please review the referenced CVE identifiers for details.
  Workaround :

    There is no known workaround at this time.

The remote host is running a version of macOS that is 10.13.x prior to 10.13.6. It is, therefore, affected by multiple vulnerabilities in the following components:

 - Accounts
 - AMD
 - APFS
 - ATS
 - Bluetooth
 - CFNetwork
 - CoreCrypto
 - CUPS
 - DesktopServices
 - Intel Graphics Driver
 - IOGraphics
 - Kernel
 - libxpc
 - LinkPresentation
 - Perl
 - Ruby

Note that successful exploitation of the most serious issues can result in arbitrary code execution.

An update of the perl package has been released.

This release provides Perl 5.26.2 that fixes a heap buffer overflow in the pack() function and two overflows in regular expression engine.

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

The remote host is running Mac OS X 10.12.6 and is missing a security update. It is therefore, affected by multiple vulnerabilities affecting the following components :

  - afpserver
  - AppleGraphicsControl
  - APR
  - ATS
  - CFNetwork
  - CoreAnimation
  - CoreCrypto
  - CoreFoundation
  - CUPS
  - Dictionary
  - dyld
  - Foundation
  - Heimdal
  - Hypervisor
  - ICU
  - Intel Graphics Driver
  - IOGraphics
  - IOHIDFamily
  - IOKit
  - IOUserEthernet
  - IPSec
  - Kernel
  - Login Window
  - mDNSOffloadUserClient
  - MediaRemote
  - Microcode
  - Perl
  - Ruby
  - Security
  - Spotlight
  - Symptom Framework
  - WiFi

This update for perl fixes the following issues :

These security issue were fixed :

CVE-2018-6913: Fixed space calculation issues in pp_pack.c (bsc#1082216).

CVE-2018-6798: Fixed heap buffer overflow in regexec.c (bsc#1082233).

CVE-2018-6797: Fixed sharp-s regexp overflow (bsc#1082234).

CVE-2018-12015: The Archive::Tar module allowed remote attackers to bypass a directory-traversal protection mechanism and overwrite arbitrary files (bsc#1096718)

The update package also includes non-security fixes. See advisory for details.

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.

This update for perl fixes the following issues: These security issue were fixed :

  - CVE-2018-6913: Fixed space calculation issues in     pp_pack.c (bsc#1082216).

  - CVE-2018-6798: Fixed heap buffer overflow in regexec.c     (bsc#1082233).

  - CVE-2018-6797: Fixed sharp-s regexp overflow     (bsc#1082234).

  - CVE-2018-12015: The Archive::Tar module allowed remote     attackers to bypass a directory-traversal protection     mechanism and overwrite arbitrary files (bsc#1096718)

The update package also includes non-security fixes. See advisory for details.

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 host is running a version of macOS / Mac OS X that is 10.13.x prior to 10.13.6. It is, therefore, affected by multiple vulnerabilities.

Note that successful exploitation of the most serious issues can result in arbitrary code execution.

The remote host is running Mac OS X 10.11.6 or Mac OS X 10.12.6 and is missing a security update. It is therefore, affected by multiple vulnerabilities.

This update for perl fixes the following issues :

Security issues fixed :

  - CVE-2018-6913: Fixed space calculation issues in     pp_pack.c (bsc#1082216).

  - CVE-2018-6798: Fixed heap buffer overflow in regexec.c     (bsc#1082233).

  - CVE-2018-6797: Fixed sharp-s regexp overflow     (bsc#1082234).

This update was imported from the SUSE:SLE-12:Update update project.

This update for perl fixes the following issues: Security issues fixed :

  - CVE-2018-6913: Fixed space calculation issues in     pp_pack.c (bsc#1082216).

  - CVE-2018-6798: Fixed heap buffer overflow in regexec.c     (bsc#1082233).

  - CVE-2018-6797: Fixed sharp-s regexp overflow     (bsc#1082234).

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.

This release provides Perl 5.24.4 that fixes a heap buffer overflow in the pack() function and two overflows in the regular expression engine.

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

The remote Ubuntu 14.04 LTS / 16.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-3625-1 advisory.

    It was discovered that Perl incorrectly handled certain regular expressions. An attacker could possibly     use this issue to cause Perl to hang, resulting in a denial of service. This issue only affected Ubuntu     14.04 LTS. (CVE-2015-8853)

    It was discovered that Perl incorrectly loaded libraries from the current working directory. A local     attacker could possibly use this issue to execute arbitrary code. This issue only affected Ubuntu 14.04     LTS and Ubuntu 16.04 LTS. (CVE-2016-6185)

    It was discovered that Perl incorrectly handled the rmtree and remove_tree functions. A local attacker     could possibly use this issue to set the mode on arbitrary files. This issue only affected Ubuntu 14.04     LTS and Ubuntu 16.04 LTS. (CVE-2017-6512)

    Brian Carpenter discovered that Perl incorrectly handled certain regular expressions. An attacker could     use this issue to cause Perl to crash, resulting in a denial of service, or possibly execute arbitrary     code. This issue has only been addressed in Ubuntu 16.04 LTS and Ubuntu 17.10. (CVE-2018-6797)

    Nguyen Duc Manh discovered that Perl incorrectly handled certain regular expressions. An attacker could     use this issue to cause Perl to crash, resulting in a denial of service. This issue only affected Ubuntu     16.04 LTS and Ubuntu 17.10. (CVE-2018-6798)

    GwanYeong Kim discovered that Perl incorrectly handled certain data when using the pack function. An     attacker could use this issue to cause Perl to crash, resulting in a denial of service, or possibly     execute arbitrary code. (CVE-2018-6913)

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

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

perldelta :

CVE-2018-6797: heap-buffer-overflow (WRITE of size 1) in S_regatom (regcomp.c)

A crafted regular expression could cause a heap buffer write overflow, with control over the bytes written. [perl #132227]

CVE-2018-6798: Heap-buffer-overflow in Perl__byte_dump_string (utf8.c)

Matching a crafted locale dependent regular expression could cause a heap buffer read overflow and potentially information disclosure.
[perl #132063]

CVE-2018-6913: heap-buffer-overflow in S_pack_rec

pack() could cause a heap buffer write overflow with a large item count. [perl #131844]

Multiple vulnerabilities were discovered in the implementation of the Perl programming language. The Common Vulnerabilities and Exposures project identifies the following problems :

  - CVE-2018-6797     Brian Carpenter reported that a crafted regular     expression could cause a heap buffer write overflow,     with control over the bytes written.

  - CVE-2018-6798     Nguyen Duc Manh reported that matching a crafted locale     dependent regular expression can cause a heap-based     buffer over-read and potentially information disclosure.

  - CVE-2018-6913     GwanYeong Kim reported that 'pack()' could cause a heap     buffer write overflow with a large item count.

ID	Name	Product	Family	Severity
266244	NewStart CGSL MAIN 6.06 : perl Multiple Vulnerabilities (NS-SA-2025-0211)	Nessus	NewStart CGSL Local Security Checks	critical
251345	Linux Distros Unpatched Vulnerability : CVE-2018-6797	Nessus	Misc.	critical
194024	RHEL 6 / 7 : rh-perl524-perl (RHSA-2018:1192)	Nessus	Red Hat Local Security Checks	critical
131491	EulerOS Virtualization for ARM 64 3.0.3.0 : perl (EulerOS-SA-2019-2326)	Nessus	Huawei Local Security Checks	critical
128590	GLSA-201909-01 : Perl: Multiple vulnerabilities	Nessus	Gentoo Local Security Checks	critical
700517	macOS 10.13.x < 10.13.6 Multiple Vulnerabilities	Nessus Network Monitor	Operating System Detection	critical
121950	Photon OS 2.0: Perl PHSA-2018-2.0-0050	Nessus	PhotonOS Local Security Checks	critical
121865	Photon OS 1.0: Perl PHSA-2018-1.0-0167	Nessus	PhotonOS Local Security Checks	critical
120813	Fedora 28 : 4:perl (2018-d1ba58394e)	Nessus	Fedora Local Security Checks	critical
118573	macOS and Mac OS X Multiple Vulnerabilities (Security Update 2018-005)	Nessus	MacOS X Local Security Checks	critical
118275	SUSE SLES12 Security Update : perl (SUSE-SU-2018:1972-2)	Nessus	SuSE Local Security Checks	critical
111150	SUSE SLED12 / SLES12 Security Update : perl (SUSE-SU-2018:1972-1)	Nessus	SuSE Local Security Checks	critical
111137	macOS 10.13.x < 10.13.6 Multiple Vulnerabilities	Nessus	MacOS X Local Security Checks	critical
111136	macOS and Mac OS X Multiple Vulnerabilities (Security Update 2018-004)	Nessus	MacOS X Local Security Checks	critical
109385	openSUSE Security Update : perl (openSUSE-2018-400)	Nessus	SuSE Local Security Checks	critical
109356	SUSE SLED12 / SLES12 Security Update : perl (SUSE-SU-2018:1074-1)	Nessus	SuSE Local Security Checks	critical
109350	Fedora 26 : 1:perl-Module-CoreList / 4:perl (2018-0050f7c0d1)	Nessus	Fedora Local Security Checks	critical
109221	Fedora 27 : 1:perl-Module-CoreList / 4:perl (2018-1c8b49fbc7)	Nessus	Fedora Local Security Checks	critical
109086	Ubuntu 14.04 LTS / 16.04 LTS : Perl vulnerabilities (USN-3625-1)	Nessus	Ubuntu Local Security Checks	critical
109051	FreeBSD : perl -- multiple vulnerabilities (41c96ffd-29a6-4dcc-9a88-65f5038fa6eb)	Nessus	FreeBSD Local Security Checks	critical
109047	Debian DSA-4172-1 : perl - security update	Nessus	Debian Local Security Checks	critical

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