CVE-2013-4351
gnupg: treats no-usage-permitted keys as all-usages-permitted
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Severity
LowRed Hat Product Security
CVSS 2.0
Review impact separately from score.
Published · March 12, 2013
Updated · November 21, 2025
Description
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.
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
No mitigation is specified in collected source.
CVSS / CWE
CVSS 2.0 · 2.6AV:N/AC:H/Au:N/C:N/I:P/A:N
CWE not specified