New curl packages are available for Slackware 13.0, 13.1, 13.37, 14.0, 14.1, and -current to fix security issues.

cURL reports :

libcurl can wrongly send HTTP credentials when re-using connections.

libcurl allows applications to set credentials for the upcoming transfer with HTTP Basic authentication, like with CURLOPT_USERPWD for example. Name and password. Just like all other libcurl options the credentials are sticky and are kept associated with the 'handle' until something is made to change the situation.

Further, libcurl offers a curl_easy_reset() function that resets a handle back to its pristine state in terms of all settable options. A reset is of course also supposed to clear the credentials. A reset is typically used to clear up the handle and prepare it for a new, possibly unrelated, transfer.

Within such a handle, libcurl can also store a set of previous connections in case a second transfer is requested to a host name for which an existing connection is already kept alive.

With this flaw present, using the handle even after a reset would make libcurl accidentally use those credentials in a subsequent request if done to the same host name and connection as was previously accessed.

An example case would be first requesting a password protected resource from one section of a website, and then do a second request of a public resource from a completely different part of the site without authentication. This flaw would then inadvertently leak the credentials in the second request.

libcurl can get tricked by a malicious SMB server to send off data it did not intend to.

In libcurl's state machine function handling the SMB protocol (smb_request_state()), two length and offset values are extracted from data that has arrived over the network, and those values are subsequently used to figure out what data range to send back.

The values are used and trusted without boundary checks and are just assumed to be valid. This allows carefully handcrafted packages to trick libcurl into responding and sending off data that was not intended. Or just crash if the values cause libcurl to access invalid memory.

Curl was updated to fix two security issues and enable metalink support

The following vulnerabilities were fixed :

  - CVE-2015-3236: libcurl could have wrongly send HTTP     credentials when re-using connections (boo#934501)

  - CVE-2015-3237: libcurl could have been tricked by a     malicious SMB server to send off data it did not intend     to (boo#934502)

The following feature was enabled :

  - boo#851126: enable metalink support.

According to its self-reported version number, the Oracle GlassFish Server running on the remote host is 3.1.2.x prior to 3.1.2.15. It is, therefore, affected by multiple vulnerabilities :

  - An information disclosure vulnerability exists in the     bundled version of libcurl in the smb_request_state()     function due to using values that are assumed valid     without properly checking boundaries. An     unauthenticated, remote attacker can exploit this, via a     malicious SMB server, to disclose arbitrary memory     contents. (CVE-2015-3237)

  - An unspecified flaw exists in the Web Container     subcomponent that allows an unauthenticated, remote     attacker to execute arbitrary code. (CVE-2016-3607)

According to its self-reported version number, the Oracle GlassFish Server running on the remote host is 3.0.1.x prior to 3.0.1.14. It is, therefore, affected by multiple vulnerabilities :

  - An information disclosure vulnerability exists in the     bundled version of libcurl in the smb_request_state()     function due to using values that are assumed valid     without properly checking boundaries. An     unauthenticated, remote attacker can exploit this, via a     malicious SMB server, to disclose arbitrary memory     contents. (CVE-2015-3237)

  - An unspecified flaw exists in the Web Container     subcomponent that allows an unauthenticated, remote     attacker to execute arbitrary code. (CVE-2016-3607)

  - Multiple unspecified flaws exist in the Administration     subcomponent that allows an unauthenticated, remote     attacker to disclose sensitive information.
    (CVE-2016-3608, CVE-2016-5477)

As discussed upstream, libcurl can wrongly send HTTP credentials when re-using connections. (CVE-2015-3236)

Also discussed upstream, libcurl can get tricked by a malicious SMB server to send off data it did not intend to. (CVE-2015-3237)

- implement public key pinning for NSS backend (#1195771)

    - fix lingering HTTP credentials in connection re-use       (CVE-2015-3236)

    - prevent SMB from sending off unrelated memory contents       (CVE-2015-3237)

    - curl-config --libs now works on x86_64 without       libcurl-devel.x86_64 (#1228363)

Note that Tenable Network Security has extracted the preceding description block directly from the Fedora 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-201509-02 (cURL: Multiple vulnerabilities)

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

    A remote attacker could possibly obtain sensitive information, or cause       a Denial of Service condition.
  Workaround :

    There is no known workaround at this time.

According to its banner, the version of HP System Management Homepage (SMH) hosted on the remote web server is affected by the following vulnerabilities :

  - A denial of service vulnerability exists in the Apache     HTTP Server due to the lack of the mod_reqtimeout     module. An unauthenticated, remote attacker can exploit     this, via a saturation of partial HTTP requests, to     cause a daemon outage. (CVE-2007-6750)

  - A cross-site scripting (XSS) vulnerability exists in     jQuery when using location.hash to select elements. An     unauthenticated, remote attacker can exploit this, via     a specially crafted tag, to inject arbitrary script     code or HTML into the user's browser session.
    (CVE-2011-4969)

  - A NULL pointer dereference flaw exists in file     rsa_ameth.c due to improper handling of ASN.1 signatures     that are missing the PSS parameter. A remote attacker     can exploit this to cause the signature verification     routine to crash, resulting in a denial of service     condition. (CVE-2015-3194)

  - A flaw exists in the ASN1_TFLG_COMBINE implementation in     file tasn_dec.c related to handling malformed     X509_ATTRIBUTE structures. A remote attacker can exploit     this to cause a memory leak by triggering a decoding     failure in a PKCS#7 or CMS application, resulting in a     denial of service. (CVE-2015-3195)

  - An out-of-bounds read error exists in cURL and libcurl     within the smb_request_state() function due to improper     bounds checking. An unauthenticated, remote attacker     can exploit this, using a malicious SMB server and     crafted length and offset values, to disclose sensitive     memory information or to cause a denial of service     condition. (CVE-2015-3237)

  - A flaw exists in libxslt in the xsltStylePreCompute()     function within file preproc.c due to a failure to check     if the parent node is an element. An unauthenticated,     remote attacker can exploit this, via a specially     crafted XML file, to cause a denial of service     condition. (CVE-2015-7995)

  - An infinite loop condition exists in the xz_decomp()     function within file xzlib.c when handling xz compressed     XML content due to a failure to detect compression     errors. An unauthenticated, remote attacker can exploit     this, via specially crafted XML data, to cause a denial     of service condition. (CVE-2015-8035)

  - A double-free error exists due to improper validation of     user-supplied input when parsing malformed DSA private     keys. A remote attacker can exploit this to corrupt     memory, resulting in a denial of service condition or     the execution of arbitrary code. (CVE-2016-0705)

  - An out-of-bounds read error exists in the fmtstr()     function within file crypto/bio/b_print.c when printing     very long strings due to a failure to properly calculate     string lengths. An unauthenticated, remote attacker can     exploit this, via a long string, to cause a denial of     service condition, as demonstrated by a large amount of     ASN.1 data. (CVE-2016-0799)

  - An unspecified flaw exists that allows a local attacker     to impact the confidentiality and integrity of the     system. No other details are available. (CVE-2016-2015)

  - A flaw exists in the doapr_outch() function within file     crypto/bio/b_print.c due to a failure to verify that a     certain memory allocation succeeds. An unauthenticated,     remote attacker can exploit this, via a long string,     to cause a denial of service condition, as demonstrated     by a large amount of ASN.1 data. (CVE-2016-2842)

ID	Name	Product	Family	Published	Updated	Severity
86662	Slackware 13.0 / 13.1 / 13.37 / 14.0 / 14.1 / current : curl (SSA:2015-302-01)	Nessus	Slackware Local Security Checks	10/30/2015	1/14/2021	high
84254	FreeBSD : cURL -- Multiple Vulnerability (2438d4af-1538-11e5-a106-3c970e169bc2)	Nessus	FreeBSD Local Security Checks	6/18/2015	1/6/2021	medium
84387	openSUSE Security Update : curl (openSUSE-2015-446)	Nessus	SuSE Local Security Checks	6/25/2015	1/19/2021	medium
92462	Oracle GlassFish Server 3.1.2.x < 3.1.2.15 Multiple Vulnerabilities (July 2016 CPU)	Nessus	Web Servers	7/20/2016	11/19/2019	critical
92463	Oracle GlassFish Server 3.0.1.x < 3.0.1.14 Multiple Vulnerabilities (July 2016 CPU)	Nessus	Web Servers	7/20/2016	11/19/2019	critical
84293	Amazon Linux AMI : curl (ALAS-2015-551)	Nessus	Amazon Linux Local Security Checks	6/22/2015	12/18/2018	medium
84376	Fedora 22 : curl-7.40.0-5.fc22 (2015-10155)	Nessus	Fedora Local Security Checks	6/25/2015	1/11/2021	medium
86133	GLSA-201509-02 : cURL: Multiple vulnerabilities	Nessus	Gentoo Local Security Checks	9/25/2015	1/11/2021	high
91222	HP System Management Homepage Multiple Vulnerabilities (HPSBMU03593)	Nessus	Web Servers	5/18/2016	4/11/2022	critical

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