SB2013082001 - Information disclosure in GNU Libgcrypt
Published: August 20, 2013 Updated: July 28, 2020
Security Bulletin ID
SB2013082001
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Information disclosure
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Information disclosure (CVE-ID: CVE-2013-4242)
The vulnerability allows a local non-authenticated attacker to gain access to sensitive information.
GnuPG before 1.4.14, and Libgcrypt before 1.5.3 as used in GnuPG 2.0.x and possibly other products, allows local users to obtain private RSA keys via a cache side-channel attack involving the L3 cache, aka Flush+Reload.
Remediation
Install update from vendor's website.
References
- http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=717880
- http://eprint.iacr.org/2013/448
- http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10705
- http://lists.gnupg.org/pipermail/gnupg-announce/2013q3/000330.html
- http://lists.opensuse.org/opensuse-updates/2013-08/msg00003.html
- http://rhn.redhat.com/errata/RHSA-2013-1457.html
- http://secunia.com/advisories/54318
- http://secunia.com/advisories/54321
- http://secunia.com/advisories/54332
- http://secunia.com/advisories/54375
- http://www.debian.org/security/2013/dsa-2730
- http://www.debian.org/security/2013/dsa-2731
- http://www.kb.cert.org/vuls/id/976534
- http://www.oracle.com/technetwork/topics/security/ovmbulletinjul2016-3090546.html
- http://www.securityfocus.com/bid/61464
- http://www.ubuntu.com/usn/USN-1923-1