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Arch Linux: ASA-202110-33 Medium: lib32-crypto DoS Vulnerability

Calendar Sep 27, 2016 • User Avatar LinuxSecurity Advisories
1 - 2 min read
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Topics Covered

security advisory denial of service security issue update medium severity Arch Linux lib32-openssl
The package lib32-openssl before version 1:1.0.2.j-1 is vulnerable to denial of service. 
Arch Linux Security Advisory ASA-201609-28
=========================================
Severity: Medium
Date    : 2016-09-27
CVE-ID  : CVE-2016-7052
Package : lib32-openssl
Type    : denial of service
Remote  : Yes
Link    : https://wiki.archlinux.org/title/CVE

Summary
======
The package lib32-openssl before version 1:1.0.2.j-1 is vulnerable to
denial of service.

Resolution
=========
Upgrade to 1:1.0.2.j-1.

# pacman -Syu "lib32-openssl>=1:1.0.2.j-1"

The problem has been fixed upstream in version 1.0.2.j.

Workaround
=========
None.

Description
==========
A bug fix which included a CRL sanity check was added to OpenSSL 1.1.0
but was omitted from OpenSSL 1.0.2i. As a result any attempt to use
CRLs in OpenSSL 1.0.2i will crash with a null pointer exception.
The issue was reported to OpenSSL on 22nd September 2016 by Bruce
Stephens and Thomas Jakobi.

Impact
=====
A remote attacker is able to perform a denial of service attack by
using a certificate revocation list.

References
=========
https://openssl-library.org/news/secadv/20160926.txt
https://access.redhat.com/security/cve/CVE-2016-7052