Public Date:
1010137: CVE-2013-4351 gnupg: treats no-usage-permitted keys as all-usages-permitted

The MITRE CVE dictionary describes this issue as:

GnuPG 1.4.x, 2.0.x, and 2.1.x treats a key flags subpacket with all bits cleared (no usage permitted) as if it has all bits set (all usage permitted), which might allow remote attackers to bypass intended cryptographic protection mechanisms by leveraging the subkey.

Find out more about CVE-2013-4351 from the MITRE CVE dictionary dictionary and NIST NVD.

CVSS v2 metrics

NOTE: The following CVSS v2 metrics and score provided are preliminary and subject to review.

Base Score 2.6
Base Metrics AV:N/AC:H/Au:N/C:N/I:P/A:N
Access Vector Network
Access Complexity High
Authentication None
Confidentiality Impact None
Integrity Impact Partial
Availability Impact None

Find out more about Red Hat support for the Common Vulnerability Scoring System (CVSS).

Red Hat Security Errata

Platform Errata Release Date
Red Hat Enterprise Linux version 6 (gnupg2) RHSA-2013:1459 2013-10-24
Red Hat Enterprise Linux version 5 (gnupg) RHSA-2013:1458 2013-10-24
Red Hat Enterprise Linux version 5 (gnupg2) RHSA-2013:1459 2013-10-24

Affected Packages State

Platform Package State
Red Hat Enterprise Linux 7 gnupg2 Not affected