Add patches for CVE-2013-6393 (bz1033990)

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.

perl-YAML-LibYAML was updated to version 0.59 to fix four security issues.

These security issues were fixed :

  - CVE-2013-6393: The yaml_parser_scan_tag_uri function in     scanner.c in LibYAML before 0.1.5 performs an incorrect     cast, which allowed remote attackers to cause a denial     of service (application crash) and possibly execute     arbitrary code via crafted tags in a YAML document,     which triggers a heap-based buffer overflow (bnc#860617,     bnc#911782).

  - CVE-2012-1152: Multiple format string vulnerabilities in     the error reporting functionality in the YAML::LibYAML     (aka YAML-LibYAML and perl-YAML-LibYAML) module 0.38 for     Perl allowed remote attackers to cause a denial of     service (process crash) via format string specifiers in     a (1) YAML stream to the Load function, (2) YAML node to     the load_node function, (3) YAML mapping to the     load_mapping function, or (4) YAML sequence to the     load_sequence function (bnc#751503).

  - CVE-2014-9130: scanner.c in LibYAML 0.1.5 and 0.1.6, as     used in the YAML-LibYAML (aka YAML-XS) module for Perl,     allowed context-dependent attackers to cause a denial of     service (assertion failure and crash) via vectors     involving line-wrapping (bnc#907809, bnc#911782).

  - CVE-2014-2525: Heap-based buffer overflow in the     yaml_parser_scan_uri_escapes function in LibYAML before     0.1.6 allowed context-dependent attackers to execute     arbitrary code via a long sequence of percent-encoded     characters in a URI in a YAML file (bnc#868944,     bnc#911782).

These non-security issues were fixed :

  - PR/23 Better scalar dump heuristics

  - More closely match YAML.pm

  - Add a VERSION statement to YAML::LibYAML (issue#8)

  - Applied fix for PR/21. nawglan++

  - Use Swim cpan-tail block functions in doc

  - Get YAML::XS using latest libyaml

  - Fix for     https://bitbucket.org/xi/libyaml/issue/10/wrapped-string     s-cause-assert-failure

  - Fix e1 test failure on 5.21.4

  - Remove =travis section

  - Meta 0.0.2

  - Eliminate spurious trailing whitespace

  - Add t/000-compile-modules.t

  - Fix swim errors

  - Add badges to doc

  - Fix ReadMe

  - Fix Meta and add Contributing.

  - Doc fix. GitHub-Issue-#6. Thanks to Debian Perl Group     for finding this.

  - Test::Base tests needed 'inc' in @INC

  - Switch to Zilla::Dist

  - No longer dep on Test::Base, Spiffy, and     Filter::Util::Call

  - Remove test/changes.t

  - Removed another C++ // style comment. jdb++

  - Removed C++ // style comments, for better portability.
    jdb++

  - Using the latest libyaml codebase

- https://github.com/yaml/libyaml/tree/perl-yaml-xs

  - Changes have been made to start moving libyaml to 1.2

This update addressed two security issues.

CVE-2013-6393: The yaml_parser_scan_tag_uri function in scanner.c in LibYAML before 0.1.5 performs an incorrect cast, which allows remote attackers to cause a denial of service (application crash) and possibly execute arbitrary code via crafted tags in a YAML document, which triggers a heap-based buffer overflow.

CVE-2014-2525: The library is affected by a heap-based buffer overflow which can lead to arbitrary code execution. The vulnerability is caused by lack of proper expansion for the string passed to the yaml_parser_scan_uri_escapes() function. A specially crafted YAML file, with a long sequence of percent-encoded characters in a URL, can be used to trigger the overflow.

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.

perl-YAML-LibYAML was updated to fix three security issues.

These security issues were fixed :

  - CVE-2013-6393: The yaml_parser_scan_tag_uri function in     scanner.c in LibYAML before 0.1.5 performed an incorrect     cast, which allowed remote attackers to cause a denial     of service (application crash) and possibly execute     arbitrary code via crafted tags in a YAML document,     which triggered a heap-based buffer overflow     (bnc#860617, bnc#911782).

  - CVE-2014-9130: scanner.c in LibYAML 0.1.5 and 0.1.6, as     used in the YAML-LibYAML (aka YAML-XS) module for Perl,     allowed context-dependent attackers to cause a denial of     service (assertion failure and crash) via vectors     involving line-wrapping (bnc#907809, bnc#911782).

  - CVE-2014-2525: Heap-based buffer overflow in the     yaml_parser_scan_uri_escapes function in LibYAML before     0.1.6 allowed context-dependent attackers to execute     arbitrary code via a long sequence of percent-encoded     characters in a URI in a YAML file (bnc#868944,     bnc#911782).

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.

Updated libyaml packages that fix two security issues are now available for Red Hat Common for Red Hat Enterprise Linux 6.

The Red Hat Security Response Team has rated this update as having Important security impact. Common Vulnerability Scoring System (CVSS) base scores, which give detailed severity ratings, are available for each vulnerability from the CVE links in the References section.

YAML is a data serialization format designed for human readability and interaction with scripting languages. LibYAML is a YAML parser and emitter written in C.

A buffer overflow flaw was found in the way the libyaml library parsed URLs in YAML documents. An attacker able to load specially crafted YAML input to an application using libyaml could cause the application to crash or, potentially, execute arbitrary code with the privileges of the user running the application. (CVE-2014-2525)

An integer overflow flaw was found in the way the libyaml library handled excessively long YAML tags. An attacker able to load specially crafted YAML input to application using libyaml could cause the application to crash or, potentially, execute arbitrary code with the privileges of the user running the application. (CVE-2013-6393)

Red Hat would like to thank oCERT for reporting the CVE-2014-2525 issue. oCERT acknowledges Ivan Fratric of the Google Security Team as the original reporter. The CVE-2013-6393 issue was discovered by Florian Weimer of the Red Hat Product Security Team.

Note: In their default configuration, applications distributed via the Red Hat Common channel do not use the libyaml library for parsing YAML, and are therefore not vulnerable to these issues.

All libyaml users are advised to upgrade to these updated packages, which contain backported patches to correct these issues. All running applications linked against the libyaml library must be restarted for this update to take effect.

Florian Weimer discovered that libyaml-libyaml-perl incorrectly handled certain large YAML documents. An attacker could use this issue to cause libyaml-libyaml-perl to crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2013-6393)

Ivan Fratric discovered that libyaml-libyaml-perl incorrectly handled certain malformed YAML documents. An attacker could use this issue to cause libyaml-libyaml-perl to crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2014-2525).

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

Updated yaml packages fix security vulnerabilities :

Florian Weimer of the Red Hat Product Security Team discovered a heap-based buffer overflow flaw in LibYAML, a fast YAML 1.1 parser and emitter library. A remote attacker could provide a YAML document with a specially crafted tag that, when parsed by an application using libyaml, would cause the application to crash or, potentially, execute arbitrary code with the privileges of the user running the application (CVE-2013-6393).

Ivan Fratric of the Google Security Team discovered a heap-based buffer overflow vulnerability in LibYAML, a fast YAML 1.1 parser and emitter library. A remote attacker could provide a specially crafted YAML document that, when parsed by an application using libyaml, would cause the application to crash or, potentially, execute arbitrary code with the privileges of the user running the application (CVE-2014-2525).

An assertion failure was found in the way the libyaml library parsed wrapped strings. An attacker able to load specially crafted YAML input into an application using libyaml could cause the application to crash (CVE-2014-9130).

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

  - The yaml_parser_scan_tag_uri function in scanner.c in LibYAML before 0.1.5 performs an incorrect cast,     which allows remote attackers to cause a denial of service (application crash) and possibly execute     arbitrary code via crafted tags in a YAML document, which triggers a heap-based buffer overflow.
    (CVE-2013-6393)

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

libyaml was updated to fix a regression introduced by the previous security patch for CVE-2013-6393.

The yaml_parser_scan_tag_uri function in scanner.c in LibYAML before 0.1.5 performs an incorrect cast, which allows remote attackers to cause a denial of service (application crash) and possibly execute arbitrary code via crafted tags in a YAML document, which triggers a heap-based buffer overflow.

perl-YAML-LibYAML was updated to fix three security issues.

These security issues were fixed :

  - CVE-2013-6393: The yaml_parser_scan_tag_uri function in     scanner.c in LibYAML before 0.1.5 performed an incorrect     cast, which allowed remote attackers to cause a denial     of service (application crash) and possibly execute     arbitrary code via crafted tags in a YAML document,     which triggered a heap-based buffer overflow     (bnc#860617, bnc#911782).

  - CVE-2014-9130: scanner.c in LibYAML 0.1.5 and 0.1.6, as     used in the YAML-LibYAML (aka YAML-XS) module for Perl,     allowed context-dependent attackers to cause a denial of     service (assertion failure and crash) via vectors     involving line-wrapping (bnc#907809, bnc#911782).

  - CVE-2014-2525: Heap-based buffer overflow in the     yaml_parser_scan_uri_escapes function in LibYAML before     0.1.6 allowed context-dependent attackers to execute     arbitrary code via a long sequence of percent-encoded     characters in a URI in a YAML file (bnc#868944,     bnc#911782).

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

ID	名称	产品	系列	发布时间	最近更新时间	严重程度
72405	Fedora 19 : libyaml-0.1.4-6.fc19 (2014-1817)	Nessus	Fedora Local Security Checks	2014/2/10	2021/1/11	medium
81417	openSUSE Security Update : perl-YAML-LibYAML (openSUSE-2015-162)	Nessus	SuSE Local Security Checks	2015/2/20	2021/1/19	medium
73366	Fedora 20 : perl-YAML-LibYAML-0.41-4.fc20 (2014-4548)	Nessus	Fedora Local Security Checks	2014/4/7	2021/1/11	medium
83868	SUSE SLES12 Security Update : perl-YAML-LibYAML (SUSE-SU-2015:0953-1)	Nessus	SuSE Local Security Checks	2015/5/28	2021/1/6	medium
79012	RHEL 6 : libyaml (RHSA-2014:0415)	Nessus	Red Hat Local Security Checks	2014/11/8	2021/1/14	medium
73329	Ubuntu 12.04 LTS / 12.10 / 13.10 : libyaml-libyaml-perl vulnerabilities (USN-2161-1)	Nessus	Ubuntu Local Security Checks	2014/4/4	2021/1/19	medium
81943	Mandriva Linux Security Advisory : yaml (MDVSA-2015:060)	Nessus	Mandriva Local Security Checks	2015/3/19	2021/1/6	medium
251586	Linux Distros Unpatched Vulnerability : CVE-2013-6393	Nessus	Misc.	2025/8/18	2025/8/18	critical
75296	openSUSE Security Update : libyaml (openSUSE-SU-2014:0381-1)	Nessus	SuSE Local Security Checks	2014/6/13	2021/1/19	medium
72747	Amazon Linux AMI : libyaml (ALAS-2014-291)	Nessus	Amazon Linux Local Security Checks	2014/3/2	2018/4/18	medium
73364	Fedora 19 : perl-YAML-LibYAML-0.41-4.fc19 (2014-4517)	Nessus	Fedora Local Security Checks	2014/4/7	2021/1/11	medium
90563	openSUSE Security Update : perl-YAML-LibYAML (openSUSE-2016-473)	Nessus	SuSE Local Security Checks	2016/4/18	2021/1/19	medium

检测

插件搜索

medium

medium

medium

medium

medium

medium

medium

critical

medium

medium

medium

medium