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Gentoo Linux Security Advisory 202401-24^[6]: Authored by Gentoo ^[7] | Site security.gentoo.org ^[8]; Gentoo Linux Security Advisory 202401-24 - Multiple denial of service vulnerabilities have been discovered in Nettle. Versions greater than or equal to 3.9.1 are affected.; systems | linux ^[9], gentoo ^[10]; advisories | CVE-2021-3580 ^[11], CVE-2023-36660 ^[12]; SHA-256 | b2b7995a3b3d102f3ba61b008faa0a4d374977257cf19d57646d6514262afae4; Download ^[13] | Favorite ^[14] | View ^[15]

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Gentoo Linux Security Advisory                           GLSA 202401-24
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https://security.gentoo.org/
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Severity: Normal
Title: Nettle: Denial of Service
Date: January 16, 2024
Bugs: #806839, #907673
ID: 202401-24
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Synopsis
=======
Multiple denial of service vulnerabilities have been discovered in
Nettle.
Background
=========
Nettle is a cryptographic library that is designed to fit easily in
almost any context: In cryptographic toolkits for object-oriented
languages, such as C++, Python, or Pike, in applications like lsh or
GnuPG, or even in kernel space.
Affected packages
================
Package          Vulnerable    Unaffected
---------------  ------------  ------------
dev-libs/nettle  < 3.9.1       >= 3.9.1
Description
==========
Multiple vulnerabilities have been discovered in Nettle. Please review
the CVE identifiers referenced below for details.
Impact
=====
A flaw was found in the way nettle's RSA decryption functions handled
specially crafted ciphertext. An attacker could use this flaw to provide
a manipulated ciphertext leading to application crash and denial of
service.
Workaround
=========
There is no known workaround at this time.
Resolution
=========
All Nettle users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">Þv-libs/nettle-3.9.1"
References
=========
[ 1 ] CVE-2021-3580
https://nvd.nist.gov/vuln/detail/CVE-2021-3580
[ 2 ] CVE-2023-36660
https://nvd.nist.gov/vuln/detail/CVE-2023-36660
Availability
===========
This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:
https://security.gentoo.org/glsa/202401-24
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
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License
======
Copyright 2024 Gentoo Foundation, Inc; referenced text
belongs to its owner(s).
The contents of this document are licensed under the
Creative Commons - Attribution / Share Alike license.
https://creativecommons.org/licenses/by-sa/2.5