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Gentoo: GLSA-202104-04 Critical: OpenSSL Vulnerability in SSL/TLS Handshake

gentoo
Calendar Grey March 31, 2021
Dist Gentoo Esm H88
Critical OpenSSL flaws identified which may result in service unavailability. It is recommended to update promptly to mitigate potential threats.
Multiple vulnerabilities have been found in OpenSSL, the worst of which could allow remote attackers to cause a Denial of Service condition.

Summary

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

Topics%20covered

Topics Covered

security advisory denial of service gentoo software update remote attack remote threat openssl normal severity

Resolution

All OpenSSL users should upgrade to the latest version: # emerge --sync # emerge --ask --oneshot --verbose ">=dev-libs/openssl-1.1.1k"

References

[ 1 ] CVE-2021-23840 https://nvd.nist.gov/vuln/detail/CVE-2021-23840 [ 2 ] CVE-2021-23841 https://nvd.nist.gov/vuln/detail/CVE-2021-23841 [ 3 ] CVE-2021-3449 https://nvd.nist.gov/vuln/detail/CVE-2021-3449 [ 4 ] CVE-2021-3450 https://nvd.nist.gov/vuln/detail/CVE-2021-3450

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website: https://security.gentoo.org/glsa/202103-03
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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: Normal
Title: OpenSSL: Multiple vulnerabilities
Date: March 31, 2021
Bugs: #769785, #777681
ID: 202103-03

Topics%20covered

Topics Covered

security advisory denial of service gentoo software update remote attack remote threat openssl normal severity

Synopsis

Multiple vulnerabilities have been found in OpenSSL, the worst of which could allow remote attackers to cause a Denial of Service condition.

Background

OpenSSL is an Open Source toolkit implementing the Secure Sockets Layer (SSL v2/v3) and Transport Layer Security (TLS v1/v1.1/v1.2/v1.3) as well as a general purpose cryptography library.

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Affected Packages

------------------------------------------------------------------- Package / Vulnerable / Unaffected ------------------------------------------------------------------- 1 dev-libs/openssl < 1.1.1k >= 1.1.1k

Impact

===== Please review the referenced CVE identifiers for details.

Workaround

There is no known workaround at this time.

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