Input validation error in GnuPG - CVE-2012-6085
Published: January 24, 2013 / Updated: August 11, 2020
Vulnerability identifier: #VU43156
CSH Severity: Medium
CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N]
CVE-ID: CVE-2012-6085
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote non-authenticated attacker to manipulate or delete data.
The read_block function in g10/import.c in GnuPG 1.4.x before 1.4.13 and 2.0.x through 2.0.19, when importing a key, allows remote attackers to corrupt the public keyring database or cause a denial of service (application crash) via a crafted length field of an OpenPGP packet.
Affected software
GnuPG
Gentoo Linux
dev-libs/libgcrypt
app-crypt/gnupg
Gentoo Linux
dev-libs/libgcrypt
app-crypt/gnupg
How to mitigate CVE-2012-6085
Install update from vendor's website.
dev-libs/libgcrypt - update to 1.5.3
app-crypt/gnupg - update to 2.0.22
app-crypt/gnupg - update to 2.0.22
External References
- http://git.gnupg.org/cgi-bin/gitweb.cgi?p=gnupg.git;a=commitdiff;h=f0b33b6fb8e0586e9584a7a409dcc31263776a67
- http://lists.fedoraproject.org/pipermail/package-announce/2013-January/095513.html
- http://lists.fedoraproject.org/pipermail/package-announce/2013-January/095516.html
- http://rhn.redhat.com/errata/RHSA-2013-1459.html
- http://www.mandriva.com/security/advisories?name=MDVSA-2013:001
- http://www.openwall.com/lists/oss-security/2013/01/01/6
- http://www.securityfocus.com/bid/57102
- http://www.ubuntu.com/usn/USN-1682-1
- https://bugs.g10code.com/gnupg/issue1455
- https://bugzilla.redhat.com/show_bug.cgi?id=891142
- https://exchange.xforce.ibmcloud.com/vulnerabilities/80990