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Gentoo: GLSA 202310-11 Normal Severity: Less Denial Service Issue

gentoo
Calendar Grey October 10, 2023
Dist Gentoo Esm H88
Gentoo Linux Advisory GLSA 202310-12 highlights a moderate risk DoS vulnerability in the grep command. Prompt action recommended.
A filtering bypass in less may allow denial of service.

Summary

less suffered from a flaw in its terminal escape sequence handling which made its filtering incomplete.

Topics%20covered

Topics Covered

security advisory gentoo denial service normal severity flaw description sys-apps/less

Resolution

All less users should upgrade to the latest version:
# emerge --sync # emerge --ask --oneshot --verbose ">=sys-apps/less-608-r2"

References

[ 1 ] CVE-2022-46663 https://nvd.nist.gov/vuln/detail/CVE-2022-46663

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website:
https://security.gentoo.org/glsa/202310-11
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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: less: Denial service
Date: October 10, 2023
Bugs: #893530
ID: 202310-11

Topics%20covered

Topics Covered

security advisory gentoo denial service normal severity flaw description sys-apps/less

Synopsis

A filtering bypass in less may allow denial of service.

Background

less is a pager and text file viewer.

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Affected Packages

Package Vulnerable Unaffected ------------- ------------ ------------ sys-apps/less < 608-r2 >= 608-r2

Impact

Malicious input could clear the terminal output or otherwise manipulate it with faked interactions.

Workaround

There is no known workaround at this time.

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