ID

VAR-201606-0135

CVE

CVE-2016-5300

TITLE

Expat of XML Service disruption in parsers (DoS) Vulnerabilities

DESCRIPTION

The XML parser in Expat does not use sufficient entropy for hash initialization, which allows context-dependent attackers to cause a denial of service (CPU consumption) via crafted identifiers in an XML document. NOTE: this vulnerability exists because of an incomplete fix for CVE-2012-0876. The Expat library is prone to a remote denial-of-service vulnerability. Exploiting this issue allows remote attackers to cause denial-of-service conditions in the context of an application using the vulnerable XML parsing library. From: Marc Deslauriers <marc.deslauriers@canonical.com> Reply-To: Ubuntu Security <security@ubuntu.com> To: ubuntu-security-announce@lists.ubuntu.com Message-ID: <57683228.8060901@canonical.com> Subject: [USN-3013-1] XML-RPC for C and C++ vulnerabilities ============================================================================ Ubuntu Security Notice USN-3013-1 June 20, 2016 xmlrpc-c vulnerabilities ============================================================================ A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 12.04 LTS Summary: Several security issues were fixed in XML-RPC for C and C++. Software Description: - xmlrpc-c: Lightweight RPC library based on XML and HTTP Details: It was discovered that the Expat code in XML-RPC for C and C++ unexpectedly called srand in certain circumstances. This could reduce the security of calling applications. (CVE-2012-6702) It was discovered that the Expat code in XML-RPC for C and C++ incorrectly handled seeding the random number generator. A remote attacker could possibly use this issue to cause a denial of service. (CVE-2016-5300) Gustavo Grieco discovered that the Expat code in XML-RPC for C and C++ incorrectly handled malformed XML data. (CVE-2016-0718) It was discovered that the Expat code in XML-RPC for C and C++ incorrectly handled malformed XML data. (CVE-2015-1283, CVE-2016-4472) Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 12.04 LTS: libxmlrpc-c++4 1.16.33-3.1ubuntu5.2 libxmlrpc-core-c3 1.16.33-3.1ubuntu5.2 After a standard system upgrade you need to restart any applications linked against XML-RPC for C and C++ to effect the necessary changes. References: http://www.ubuntu.com/usn/usn-3013-1 CVE-2012-6702, CVE-2015-1283, CVE-2016-0718, CVE-2016-4472, CVE-2016-5300 Package Information: https://launchpad.net/ubuntu/+source/xmlrpc-c/1.16.33-3.1ubuntu5.2 . Here are the details from the Slackware 14.2 ChangeLog: +--------------------------+ patches/packages/python-2.7.15-i586-1_slack14.2.txz: Upgraded. Updated to the latest 2.7.x release. This fixes some security issues in difflib and poplib (regexes vulnerable to denial of service attacks), as well as security issues with the bundled expat library. For more information, see: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2012-0876 https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-0718 https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-0718 https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-4472 https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-5300 https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-9063 https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-9233 https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-1060 https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-1061 (* Security fix *) +--------------------------+ Where to find the new packages: +-----------------------------+ Thanks to the friendly folks at the OSU Open Source Lab (http://osuosl.org) for donating FTP and rsync hosting to the Slackware project! :-) Also see the "Get Slack" section on http://slackware.com for additional mirror sites near you. Updated package for Slackware 14.0: ftp://ftp.slackware.com/pub/slackware/slackware-14.0/patches/packages/python-2.7.15-i486-1_slack14.0.txz Updated package for Slackware x86_64 14.0: ftp://ftp.slackware.com/pub/slackware/slackware64-14.0/patches/packages/python-2.7.15-x86_64-1_slack14.0.txz Updated package for Slackware 14.1: ftp://ftp.slackware.com/pub/slackware/slackware-14.1/patches/packages/python-2.7.15-i486-1_slack14.1.txz Updated package for Slackware x86_64 14.1: ftp://ftp.slackware.com/pub/slackware/slackware64-14.1/patches/packages/python-2.7.15-x86_64-1_slack14.1.txz Updated package for Slackware 14.2: ftp://ftp.slackware.com/pub/slackware/slackware-14.2/patches/packages/python-2.7.15-i586-1_slack14.2.txz Updated package for Slackware x86_64 14.2: ftp://ftp.slackware.com/pub/slackware/slackware64-14.2/patches/packages/python-2.7.15-x86_64-1_slack14.2.txz Updated package for Slackware -current: ftp://ftp.slackware.com/pub/slackware/slackware-current/slackware/d/python-2.7.15-i586-1.txz Updated package for Slackware x86_64 -current: ftp://ftp.slackware.com/pub/slackware/slackware64-current/slackware64/d/python-2.7.15-x86_64-1.txz MD5 signatures: +-------------+ Slackware 14.0 package: 815f18de185a913b37f8a4a5ba209a33 python-2.7.15-i486-1_slack14.0.txz Slackware x86_64 14.0 package: ac2745d0977849cf16ad3b386ad6e706 python-2.7.15-x86_64-1_slack14.0.txz Slackware 14.1 package: 96fa93f516bfefae9539d8d5329fe8e1 python-2.7.15-i486-1_slack14.1.txz Slackware x86_64 14.1 package: 5895cf391b0de5746e4c23c5c34dd50f python-2.7.15-x86_64-1_slack14.1.txz Slackware 14.2 package: 82212eec089fe925da83e47d5b829b3e python-2.7.15-i586-1_slack14.2.txz Slackware x86_64 14.2 package: 9ca1bd6126f729067fc507271889643e python-2.7.15-x86_64-1_slack14.2.txz Slackware -current package: fa60bc913282d7992f5cf8b29863a411 d/python-2.7.15-i586-1.txz Slackware x86_64 -current package: 0d473b473463c6927a1efaab6e6f601d d/python-2.7.15-x86_64-1.txz Installation instructions: +------------------------+ Upgrade the package as root: # upgradepkg python-2.7.15-i586-1_slack14.2.txz +-----+ Slackware Linux Security Team http://slackware.com/gpg-key security@slackware.com +------------------------------------------------------------------------+ | To leave the slackware-security mailing list: | +------------------------------------------------------------------------+ | Send an email to majordomo@slackware.com with this text in the body of | | the email message: | | | | unsubscribe slackware-security | | | | You will get a confirmation message back containing instructions to | | complete the process. Please do not reply to this email address. | +------------------------------------------------------------------------+ -----BEGIN PGP SIGNATURE----- iEYEARECAAYFAlrswRQACgkQakRjwEAQIjMn4gCgj6BK6MXBaKThgulSSZnxOebc Ot0An3uKq5ASx59tnVKGmSC4YGaYb3Xh =kC7x -----END PGP SIGNATURE----- . -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 - ------------------------------------------------------------------------- Debian Security Advisory DSA-3597-1 security@debian.org https://www.debian.org/security/ Luciano Bello June 07, 2016 https://www.debian.org/security/faq - ------------------------------------------------------------------------- Package : expat CVE ID : CVE-2012-6702 CVE-2016-5300 Two related issues have been discovered in Expat, a C library for parsing XML. CVE-2012-6702 It was introduced when CVE-2012-0876 was addressed. Stefan Sørensen discovered that the use of the function XML_Parse() seeds the random number generator generating repeated outputs for rand() calls. CVE-2016-5300 It is the product of an incomplete solution for CVE-2012-0876. You might need to manually restart programs and services using expat libraries. For the stable distribution (jessie), these problems have been fixed in version 2.1.0-6+deb8u3. For the unstable distribution (sid), these problems have been fixed in version 2.1.1-3. We recommend that you upgrade your expat packages. Further information about Debian Security Advisories, how to apply these updates to your system and frequently asked questions can be found at: https://www.debian.org/security/ Mailing list: debian-security-announce@lists.debian.org -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQIcBAEBCAAGBQJXVvdDAAoJEG7C3vaP/jd0YQoP/iNI/wcPsJl1Dzji5NiBhaAJ 9QXYxekJEusKQgUE4odgqfR58knCN9KX0YPw7lg1hWxkD2UEgwBMT9uKzXeojBdS 4mvh9kZquA5Uizy4gXaoo/lVzUYfRCrFBiWaH3vT6ta+Se9fb0wq5GZq1Ad7FRrK 70YSv5yuu0jkA9KU9AspJt0d44nqdfiNCOl6mjW768pDs4B7jKxWmryI+ziWTWmG ZJH4TlUMBwYZ7vxe3+1t/3aHzyHfg+hjkWIpKvR9TsFnnKxcYyecCHjOh57ytCBF Kr4TD46oyzHxMYR4GR0ig1bsbmcZOpS78OH5h0aikRta/DzFwvP027YSBp+DlhD1 J9iKPySdykU4Ks4qgc1Ywe2J04pIzdyfJwWAaOug+rMJIT06ft+Md8GPm+LxtZLv n67DgIqGEvLoBneC9UUP4Qmz/uFbX2F0ILi69j1PZf6d8WrrSX2UM9azvXGr+YyA 3AHPp/uH20NvytJkTTV6IC0EbQ2HdxprEhRCLb5ggh8rNVU0ozM+/OkNjNzXlHmV WzeVej+DqTuHYDbvBAYKvQ9G+DgqX3gHm2+OHFz/j16WLhP9+o54Pb7zL7spToG0 xIxU8l2e8rsjTvJNN3Qja4p6mJrUblKW3Mxm28sKgfy/EPWXCAwFRy1/aPVxAISd qKokFSeLrpmmON44o5ah =Au1C -----END PGP SIGNATURE----- . These issues were addressed by updating SQLite to version 3.15.2. These issues were addressed by updating expat to version 2.2.0. - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Gentoo Linux Security Advisory GLSA 201701-21 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - https://security.gentoo.org/ - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Severity: Normal Title: Expat: Multiple vulnerabilities Date: January 11, 2017 Bugs: #458742, #555642, #577928, #583268, #585510 ID: 201701-21 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Synopsis ======== Multiple vulnerabilities have been found in Expat, the worst of which may allow execution of arbitrary code. Background ========== Expat is a set of XML parsing libraries. Affected packages ================= ------------------------------------------------------------------- Package / Vulnerable / Unaffected ------------------------------------------------------------------- 1 dev-libs/expat < 2.2.0-r1 >= 2.2.0-r1 Description =========== Multiple vulnerabilities have been discovered in Expat. Please review the CVE identifiers referenced below for details. Impact ====== A remote attacker, by enticing a user to process a specially crafted XML file, could execute arbitrary code with the privileges of the process or cause a Denial of Service condition. This attack could also be used against automated systems that arbitrarily process XML files. Workaround ========== There is no known workaround at this time. Resolution ========== All Expat users should upgrade to the latest version: # emerge --sync # emerge --ask --oneshot --verbose ">=dev-libs/expat-2.2.0-r1" References ========== [ 1 ] CVE-2012-6702 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2012-6702 [ 2 ] CVE-2013-0340 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2013-0340 [ 3 ] CVE-2015-1283 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2015-1283 [ 4 ] CVE-2016-0718 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2016-0718 [ 5 ] CVE-2016-4472 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2016-4472 [ 6 ] CVE-2016-5300 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2016-5300 Availability ============ This GLSA and any updates to it are available for viewing at the Gentoo Security Website: https://security.gentoo.org/glsa/201701-21 Concerns? ========= Security is a primary focus of Gentoo Linux and ensuring the confidentiality and security of our users' machines is of utmost importance to us. Any security concerns should be addressed to security@gentoo.org or alternatively, you may file a bug at https://bugs.gentoo.org. License ======= Copyright 2017 Gentoo Foundation, Inc; referenced text belongs to its owner(s). The contents of this document are licensed under the Creative Commons - Attribution / Share Alike license. http://creativecommons.org/licenses/by-sa/2.5

AFFECTED PRODUCTS

CVSS

PROBLEMTYPE DATA

THREAT TYPE

remote

TYPE

resource management error

CONFIGURATIONS

PATCH

EXTERNAL IDS

REFERENCES

CREDITS

Daniel Micay

SOURCES

LAST UPDATE DATE

2025-12-22T22:16:52.819000+00:00

SOURCES UPDATE DATE

SOURCES RELEASE DATE