Executive Summary

Summary
Title LibYAML: Arbitrary code execution
Informations
Name GLSA-201405-27 First vendor Publication 2014-05-23
Vendor Gentoo Last vendor Modification 2014-05-23
Severity (Vendor) Normal Revision N/A

Security-Database Scoring CVSS v3

Cvss vector : N/A
Overall CVSS Score NA
Base Score NA Environmental Score NA
impact SubScore NA Temporal Score NA
Exploitabality Sub Score NA
 
Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector : (AV:N/AC:M/Au:N/C:P/I:P/A:P)
Cvss Base Score 6.8 Attack Range Network
Cvss Impact Score 6.4 Attack Complexity Medium
Cvss Expoit Score 8.6 Authentication None Required
Calculate full CVSS 2.0 Vectors scores

Detail

Synopsis

A vulnerability in LibYAML could allow an attacker to execute arbitrary code or cause a Denial of Service condition.

Background

LibYAML is a YAML 1.1 parser and emitter written in C.

Description

The yaml_parser_scan_uri_escapes() function does not properly expand strings passed as input, which can result in a heap-based buffer overflow.

Impact

An attacker could provide a specially-crafted YAML document, which, when parsed by LibYAML, could result in arbitrary code execution or cause the application to crash.

Workaround

There is no known workaround at this time.

Resolution

All LibYAML users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=dev-libs/libyaml-0.1.6"

Packages which depend on this library may need to be recompiled. Tools such as revdep-rebuild may assist in identifying these packages.

References

[ 1 ] CVE-2014-2525 : http://nvd.nist.gov/nvd.cfm?cvename=CVE-2014-2525

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website:

http://security.gentoo.org/glsa/glsa-201405-27.xml

Original Source

Url : http://security.gentoo.org/glsa/glsa-201405-27.xml

CWE : Common Weakness Enumeration

% Id Name
100 % CWE-119 Failure to Constrain Operations within the Bounds of a Memory Buffer

OVAL Definitions

Definition Id: oval:org.mitre.oval:def:23896
 
Oval ID: oval:org.mitre.oval:def:23896
Title: DSA-2885-1 libyaml-libyaml-perl - security update
Description: 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.
Family: unix Class: patch
Reference(s): DSA-2885-1
CVE-2014-2525
 Version: 5
Platform(s): Debian GNU/Linux 6.0
Debian GNU/Linux 7
Debian GNU/kFreeBSD 6.0
Debian GNU/kFreeBSD 7
 Product(s): libyaml-libyaml-perl
Definition Synopsis:
Definition Id: oval:org.mitre.oval:def:24117
 
Oval ID: oval:org.mitre.oval:def:24117
Title: USN-2161-1 -- libyaml-libyaml-perl vulnerabilities
Description: libyaml-libyaml-perl could be made to crash or run programs if it opened a specially crafted YAML file.
Family: unix Class: patch
Reference(s): USN-2161-1
CVE-2013-6393
CVE-2014-2525
 Version: 5
Platform(s): Ubuntu 13.10
Ubuntu 12.10
Ubuntu 12.04
 Product(s): libyaml-libyaml-perl
Definition Synopsis:
Definition Id: oval:org.mitre.oval:def:24450
 
Oval ID: oval:org.mitre.oval:def:24450
Title: USN-2160-1 -- libyaml vulnerability
Description: LibYAML could be made to crash or run programs if it opened a specially crafted YAML document.
Family: unix Class: patch
Reference(s): USN-2160-1
CVE-2014-2525
 Version: 5
Platform(s): Ubuntu 13.10
Ubuntu 12.10
Ubuntu 12.04
 Product(s): libyaml
Definition Synopsis:
Definition Id: oval:org.mitre.oval:def:24469
 
Oval ID: oval:org.mitre.oval:def:24469
Title: DSA-2884-1 libyaml - security update
Description: Ivan Fratric of the Google Security Team discovered a heap-based buffer overflow vulnerability in LibYAML, a fast YAML 1.1 parser and emitterlibrary. A remote attacker could provide a specially-crafted YAMLdocument 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.
Family: unix Class: patch
Reference(s): DSA-2884-1
CVE-2014-2525
 Version: 5
Platform(s): Debian GNU/Linux 6.0
Debian GNU/Linux 7
Debian GNU/kFreeBSD 6.0
Debian GNU/kFreeBSD 7
 Product(s): libyaml
Definition Synopsis:
Definition Id: oval:org.mitre.oval:def:29055
 
Oval ID: oval:org.mitre.oval:def:29055
Title: SUSE-SU-2015:0953-2 -- Security update for perl-YAML-LibYAML (moderate)
Description: erl-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).
Family: unix Class: patch
Reference(s): SUSE-SU-2015:0953-2
CVE-2013-6393
CVE-2014-9130
CVE-2014-2525
 Version: 3
Platform(s): SUSE Linux Enterprise Server 12
SUSE Linux Enterprise Desktop 12
 Product(s): perl-YAML-LibYAML
Definition Synopsis:

CPE : Common Platform Enumeration

TypeDescriptionCount
Application 6
Os 1
Os 2

Snort® IPS/IDS

Date Description
2017-12-13 LibYAML yaml_parser_scan_uri_escapes heap buffer overflow attempt
RuleID : 44759 - Revision : 2 - Type : FILE-OTHER
2017-12-13 LibYAML yaml_parser_scan_uri_escapes heap buffer overflow attempt
RuleID : 44758 - Revision : 2 - Type : FILE-OTHER
2017-12-13 LibYAML yaml_parser_scan_uri_escapes heap buffer overflow attempt
RuleID : 44757 - Revision : 2 - Type : FILE-OTHER
2015-01-06 LibYAML yaml_parser_scan_uri_escapes heap buffer overflow attempt
RuleID : 32671 - Revision : 3 - Type : FILE-OTHER

Nessus® Vulnerability Scanner

Date Description
2016-04-18 Name : The remote openSUSE host is missing a security update.
File : openSUSE-2016-473.nasl - Type : ACT_GATHER_INFO
2015-05-28 Name : The remote SUSE host is missing one or more security updates.
File : suse_SU-2015-0953-2.nasl - Type : ACT_GATHER_INFO
2015-05-28 Name : The remote SUSE host is missing one or more security updates.
File : suse_SU-2015-0953-1.nasl - Type : ACT_GATHER_INFO
2015-03-19 Name : The remote Mandriva Linux host is missing one or more security updates.
File : mandriva_MDVSA-2015-060.nasl - Type : ACT_GATHER_INFO
2015-02-20 Name : The remote openSUSE host is missing a security update.
File : openSUSE-2015-162.nasl - Type : ACT_GATHER_INFO
2014-11-08 Name : The remote Red Hat host is missing one or more security updates.
File : redhat-RHSA-2014-0415.nasl - Type : ACT_GATHER_INFO
2014-09-18 Name : The remote host is missing a Mac OS X update that fixes multiple vulnerabilit...
File : macosx_10_9_5.nasl - Type : ACT_GATHER_INFO
2014-06-13 Name : The remote openSUSE host is missing a security update.
File : openSUSE-2014-281.nasl - Type : ACT_GATHER_INFO
2014-05-25 Name : The remote Gentoo host is missing one or more security-related patches.
File : gentoo_GLSA-201405-27.nasl - Type : ACT_GATHER_INFO
2014-05-22 Name : The remote CentOS host is missing one or more security updates.
File : centos_RHSA-2014-0355.nasl - Type : ACT_GATHER_INFO
2014-04-23 Name : The remote Amazon Linux AMI host is missing a security update.
File : ala_ALAS-2014-321.nasl - Type : ACT_GATHER_INFO
2014-04-23 Name : The remote Amazon Linux AMI host is missing a security update.
File : ala_ALAS-2014-324.nasl - Type : ACT_GATHER_INFO
2014-04-22 Name : The remote Slackware host is missing a security update.
File : Slackware_SSA_2014-111-01.nasl - Type : ACT_GATHER_INFO
2014-04-10 Name : The remote Mandriva Linux host is missing one or more security updates.
File : mandriva_MDVSA-2014-071.nasl - Type : ACT_GATHER_INFO
2014-04-10 Name : The remote Mandriva Linux host is missing a security update.
File : mandriva_MDVSA-2014-069.nasl - Type : ACT_GATHER_INFO
2014-04-07 Name : The remote Fedora host is missing a security update.
File : fedora_2014-4548.nasl - Type : ACT_GATHER_INFO
2014-04-07 Name : The remote Fedora host is missing a security update.
File : fedora_2014-4517.nasl - Type : ACT_GATHER_INFO
2014-04-07 Name : The remote Fedora host is missing a security update.
File : fedora_2014-4440.nasl - Type : ACT_GATHER_INFO
2014-04-07 Name : The remote Fedora host is missing a security update.
File : fedora_2014-4438.nasl - Type : ACT_GATHER_INFO
2014-04-04 Name : The remote Ubuntu host is missing a security-related patch.
File : ubuntu_USN-2161-1.nasl - Type : ACT_GATHER_INFO
2014-04-04 Name : The remote Ubuntu host is missing a security-related patch.
File : ubuntu_USN-2160-1.nasl - Type : ACT_GATHER_INFO
2014-04-04 Name : The remote FreeBSD host is missing one or more security-related updates.
File : freebsd_pkg_580cc46bbb1e11e3b1442c4138874f7d.nasl - Type : ACT_GATHER_INFO
2014-03-27 Name : The remote Debian host is missing a security-related update.
File : debian_DSA-2884.nasl - Type : ACT_GATHER_INFO
2014-03-27 Name : The remote Debian host is missing a security-related update.
File : debian_DSA-2885.nasl - Type : ACT_GATHER_INFO

Alert History

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0
1
Date Informations
2014-05-25 13:23:10
  • Multiple Updates
2014-05-23 13:21:05
  • First insertion