Vulnerability Monitor

The vendors, products, and vulnerabilities you care about

CVE-2013-4351

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.

Security Impact Summary

CVE-2013-4351 is a security vulnerability that . Impacting 1 product from gnupg organizations running these solutions should prioritize assessment and patching.

Historical Context

Documented in 2013, this vulnerability occurred amid the cloud computing expansion era, where traditional network perimeter security models were being reevaluated. Organizations were transitioning from isolated infrastructure to interconnected systems, creating new attack surfaces that vulnerabilities like this could exploit.

Published

2013-10-10T00:55:15.023

Last Modified

2025-04-11T00:51:21.963

Status

Deferred

Source

[email protected]

Severity

CVSSv2: 5.8 (MEDIUM)

CVSSv2 Vector

AV:N/AC:M/Au:N/C:P/I:P/A:N

Access Vector: NETWORK
Access Complexity: MEDIUM
Authentication: NONE
Confidentiality Impact: PARTIAL
Integrity Impact: PARTIAL
Availability Impact: NONE

Exploitability Score

8.6

Impact Score

4.9

Weaknesses

Type: Primary
CWE-310

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	gnupg	gnupg	1.4.0	Yes
Application	gnupg	gnupg	1.4.2	Yes
Application	gnupg	gnupg	1.4.3	Yes
Application	gnupg	gnupg	1.4.4	Yes
Application	gnupg	gnupg	1.4.5	Yes
Application	gnupg	gnupg	1.4.6	Yes
Application	gnupg	gnupg	1.4.8	Yes
Application	gnupg	gnupg	1.4.10	Yes
Application	gnupg	gnupg	1.4.11	Yes
Application	gnupg	gnupg	1.4.12	Yes
Application	gnupg	gnupg	1.4.13	Yes
Application	gnupg	gnupg	2.0	Yes
Application	gnupg	gnupg	2.0.1	Yes
Application	gnupg	gnupg	2.0.3	Yes
Application	gnupg	gnupg	2.0.4	Yes
Application	gnupg	gnupg	2.0.5	Yes
Application	gnupg	gnupg	2.0.6	Yes
Application	gnupg	gnupg	2.0.7	Yes
Application	gnupg	gnupg	2.0.8	Yes
Application	gnupg	gnupg	2.0.10	Yes
Application	gnupg	gnupg	2.0.11	Yes
Application	gnupg	gnupg	2.0.12	Yes
Application	gnupg	gnupg	2.0.13	Yes
Application	gnupg	gnupg	2.0.14	Yes
Application	gnupg	gnupg	2.0.15	Yes
Application	gnupg	gnupg	2.0.16	Yes
Application	gnupg	gnupg	2.0.17	Yes
Application	gnupg	gnupg	2.0.18	Yes
Application	gnupg	gnupg	2.0.19	Yes
Application	gnupg	gnupg	2.1.0	Yes

References

http://lists.opensuse.org/opensuse-updates/2013-10/msg00003.html ([email protected])
http://lists.opensuse.org/opensuse-updates/2013-10/msg00006.html ([email protected])
http://rhn.redhat.com/errata/RHSA-2013-1459.html ([email protected])
http://thread.gmane.org/gmane.comp.encryption.gpg.devel/17712/focus=18138 ([email protected])
http://ubuntu.com/usn/usn-1987-1 ([email protected])
http://www.debian.org/security/2013/dsa-2773 ([email protected])
http://www.debian.org/security/2013/dsa-2774 ([email protected])
http://www.openwall.com/lists/oss-security/2013/09/13/4 ([email protected])
https://bugzilla.redhat.com/show_bug.cgi?id=1010137 ([email protected])
http://lists.opensuse.org/opensuse-updates/2013-10/msg00003.html (af854a3a-2127-422b-91ae-364da2661108)
http://lists.opensuse.org/opensuse-updates/2013-10/msg00006.html (af854a3a-2127-422b-91ae-364da2661108)
http://rhn.redhat.com/errata/RHSA-2013-1459.html (af854a3a-2127-422b-91ae-364da2661108)
http://thread.gmane.org/gmane.comp.encryption.gpg.devel/17712/focus=18138 (af854a3a-2127-422b-91ae-364da2661108)
http://ubuntu.com/usn/usn-1987-1 (af854a3a-2127-422b-91ae-364da2661108)
http://www.debian.org/security/2013/dsa-2773 (af854a3a-2127-422b-91ae-364da2661108)
http://www.debian.org/security/2013/dsa-2774 (af854a3a-2127-422b-91ae-364da2661108)
http://www.openwall.com/lists/oss-security/2013/09/13/4 (af854a3a-2127-422b-91ae-364da2661108)
https://bugzilla.redhat.com/show_bug.cgi?id=1010137 (af854a3a-2127-422b-91ae-364da2661108)

How SecUtils Interprets This CVE

SecUtils normalizes and enriches National Vulnerability Database (NVD) records by standardizing vendor and product identifiers, aggregating vulnerability metadata from both NVD and MITRE sources, and providing structured context for security teams. For gnupg's affected products, we extract Common Platform Enumeration (CPE) data, Common Weakness Enumeration (CWE) classifications, CVSS severity metrics, and reference data to enable rapid vulnerability prioritization and asset correlation. This record contains no exploit code, proof-of-concept instructions, or attack methodologies—only defensive intelligence necessary for patch management, risk assessment, and security operations.