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SUSE SLED12 / SLES12 Security Update : yaml-cpp (SUSE-SU-2022:1072-1)

medium Nessus Plugin ID 159476

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Synopsis

The remote SUSE host is missing one or more security updates.

Description

The remote SUSE Linux SLED12 / SLED_SAP12 / SLES12 / SLES_SAP12 host has a package installed that is affected by multiple vulnerabilities as referenced in the SUSE-SU-2022:1072-1 advisory.

 - The Scanner::EnsureTokensInQueue function in yaml-cpp (aka LibYaml-C++) 0.6.2 allows remote attackers to cause a denial of service (stack consumption and application crash) via a crafted YAML file.
 (CVE-2018-20573)

 - The SingleDocParser::HandleFlowMap function in yaml-cpp (aka LibYaml-C++) 0.6.2 allows remote attackers to cause a denial of service (stack consumption and application crash) via a crafted YAML file.
 (CVE-2018-20574)

 - The SingleDocParser::HandleFlowSequence function in yaml-cpp (aka LibYaml-C++) 0.6.2 allows remote attackers to cause a denial of service (stack consumption and application crash) via a crafted YAML file.
 (CVE-2019-6285)

 - An issue was discovered in singledocparser.cpp in yaml-cpp (aka LibYaml-C++) 0.6.2. Stack Exhaustion occurs in YAML::SingleDocParser, and there is a stack consumption problem caused by recursive stack frames: HandleCompactMap, HandleMap, HandleFlowSequence, HandleSequence, HandleNode. Remote attackers could leverage this vulnerability to cause a denial-of-service via a cpp file. (CVE-2019-6292)

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

Solution

Update the affected libyaml-cpp0_5 package.

See Also

https://bugzilla.suse.com/1121227

https://bugzilla.suse.com/1121230

https://bugzilla.suse.com/1122004

https://bugzilla.suse.com/1122021

https://www.suse.com/security/cve/CVE-2018-20573

https://www.suse.com/security/cve/CVE-2018-20574

https://www.suse.com/security/cve/CVE-2019-6285

https://www.suse.com/security/cve/CVE-2019-6292

http://www.nessus.org/u?9431ea70

Plugin Details

Severity: Medium

ID: 159476

File Name: suse_SU-2022-1072-1.nasl

Version: 1.5

Type: local

Agent: unix

Published: 4/4/2022

Updated: 7/13/2023

Supported Sensors: Agentless Assessment, Frictionless Assessment Agent, Frictionless Assessment AWS, Frictionless Assessment Azure, Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.4

CVSS v2

Risk Factor: Medium

Base Score: 4.3

Temporal Score: 3.4

Vector: CVSS2#AV:N/AC:M/Au:N/C:N/I:N/A:P

CVSS Score Source: CVE-2019-6292

CVSS v3

Risk Factor: Medium

Base Score: 6.5

Temporal Score: 5.9

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:novell:suse_linux:libyaml-cpp0_5, cpe:/o:novell:suse_linux:12

Required KB Items: Host/local_checks_enabled, Host/cpu, Host/SuSE/release, Host/SuSE/rpm-list

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 4/1/2022

Vulnerability Publication Date: 12/28/2018

Reference Information

CVE: CVE-2018-20573, CVE-2018-20574, CVE-2019-6285, CVE-2019-6292

SuSE: SUSE-SU-2022:1072-1