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Gentoo: 202405-24 Normal Severity: ytnef Remote Code Execution and DoS

gentoo
Calendar Grey May 8, 2024
Dist Gentoo Esm H88
Numerous flaws discovered in ytnef could lead to remote code execution or service disruption; urgent updates are recommended.
Multiple vulnerabilities have been discovered in ytnef, the worst of which could potentially lead to remote code execution.

Summary

The TNEFSubjectHandler function in lib/ytnef.c allows remote attackers to cause a denial-of-service (and potentially code execution) due to a double free which can be triggered via a crafted file.
The SwapWord function in lib/ytnef.c allows remote attackers to cause a denial-of-service (and potentially code execution) due to a heap buffer overflow which can be triggered via a crafted file.

Topics%20covered

Topics Covered

security advisory denial of service security update gentoo remote code execution normal severity ytnef

Resolution

All ytnef users should upgrade to the latest version:
# emerge --sync # emerge --ask --oneshot --verbose ">=net-mail/ytnef-2.0"

References

[ 1 ] CVE-2021-3403 https://nvd.nist.gov/vuln/detail/CVE-2021-3403 [ 2 ] CVE-2021-3404 https://nvd.nist.gov/vuln/detail/CVE-2021-3404

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website:
https://security.gentoo.org/glsa/202405-24
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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: Normal
Title: ytnef: Multiple Vulnerabilities
Date: May 08, 2024
Bugs: #774255
ID: 202405-24

Topics%20covered

Topics Covered

security advisory denial of service security update gentoo remote code execution normal severity ytnef

Synopsis

Multiple vulnerabilities have been discovered in ytnef, the worst of which could potentially lead to remote code execution.

Background

ytnef is a TNEF stream reader for reading winmail.dat files.

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Affected Packages

Package Vulnerable Unaffected -------------- ------------ ------------ net-mail/ytnef < 2.0 >= 2.0

Impact

Please review the referenced CVE identifiers for details.

Workaround

There is no known workaround at this time.

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