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Gentoo 202107-05 Low Risk: libxml2 Denial of Service Advisory

gentoo
Calendar Grey July 5, 2021
Dist Gentoo Esm H88
Several vulnerabilities detected in libxml2 may result in Denial of Service attacks. Update to mitigate possible risks.
Multiple vulnerabilities have been found in libxml2, the worst of which could result in a Denial of Service condition.

Summary

Multiple vulnerabilities have been discovered in libxml2. Please review the CVE identifiers referenced below for details.

Topics%20covered

Topics Covered

security advisory denial of service gentoo multiple vulnerabilities libxml2

Resolution

All libxml2 users should upgrade to the latest version: # emerge --sync # emerge --ask --oneshot --verbose ">=dev-libs/libxml2-2.9.12-r3"

References

[ 1 ] CVE-2020-24977 https://nvd.nist.gov/vuln/detail/CVE-2020-24977 [ 2 ] CVE-2021-3516 https://nvd.nist.gov/vuln/detail/CVE-2021-3516 [ 3 ] CVE-2021-3517 https://nvd.nist.gov/vuln/detail/CVE-2021-3517 [ 4 ] CVE-2021-3518 https://nvd.nist.gov/vuln/detail/CVE-2021-3518 [ 5 ] CVE-2021-3537 https://nvd.nist.gov/vuln/detail/CVE-2021-3537 [ 6 ] CVE-2021-3541 https://nvd.nist.gov/vuln/detail/CVE-2021-3541

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website: https://security.gentoo.org/glsa/202107-05
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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.

Severity
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Severity: Low
Title: libxml2: Multiple vulnerabilities
Date: July 06, 2021
Bugs: #749849, #790002
ID: 202107-05

Topics%20covered

Topics Covered

security advisory denial of service gentoo multiple vulnerabilities libxml2

Synopsis

Multiple vulnerabilities have been found in libxml2, the worst of which could result in a Denial of Service condition.

Background

libxml2 is the XML (eXtended Markup Language) C parser and toolkit initially developed for the GNOME project.

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Affected Packages

------------------------------------------------------------------- Package / Vulnerable / Unaffected ------------------------------------------------------------------- 1 dev-libs/libxml2 < 2.9.11 >= 2.9.11

Impact

===== A remote attacker could entice a user to process a specially crafted XML document using an application linked against libxml2, possibly resulting in a Denial of Service condition or obtaining sensitive information.

Workaround

There is no known workaround at this time.

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