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Fencer Intel
medium 5.8

CVE-2013-4351 json

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…

published 13y ago modified 4mo ago also EUVD-2013-4235

cvss
5.8
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
2.5%
EPSS 2.5% chance of exploitation in 30 days, percentile 84%
public exploits
0
none known

Summary

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.

Patch / fix

  • gnupg2 Debian 14, Debian 13, Debian 12 2.0.22-1

debian advisories DEBIAN-CVE-2013-4351

  • gnupg2 RHEL 5 2.0.10-6.el5_10
  • gnupg2 RHEL 6 2.0.14-6.el6_4
  • gnupg2-smime RHEL 6 2.0.14-6.el6_4
  • gnupg RHEL 5 1.4.5-18.el5_10

red hat advisories RHSA-2013:1459RHSA-2013:1458

  • gpg2 openSUSE Tumbleweed 2.1.16-1.1

opensuse advisories openSUSE-SU-2024:10102-1

Is CVE-2013-4351 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

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Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2013-4351 updated cvss 2.6

gnupg: treats no-usage-permitted keys as all-usages-permitted

  • Red Hat Enterprise Linux (v. 5 server) gnupg 1.4.5-18.el5_10, gnupg2 2.0.10-6.el5_10 Red Hat Enterprise Linux Desktop (v. 5 client) gnupg 1.4.5-18.el5_10, gnupg2 2.0.10-6.el5_10
    fixed: vendor fix RHSA-2013:1458
  • Red Hat Enterprise Linux Desktop (v. 6) gnupg2 2.0.14-6.el6_4 Red Hat Enterprise Linux Desktop Optional (v. 6) gnupg2 2.0.14-6.el6_4, gnupg2-smime 2.0.14-6.el6_4 Red Hat Enterprise Linux HPC Node (v. 6) gnupg2 2.0.14-6.el6_4 Red Hat Enterprise Linux HPC Node Optional (v. 6) gnupg2 2.0.14-6.el6_4, gnupg2-smime 2.0.14-6.el6_4 Red Hat Enterprise Linux Server (v. 6) gnupg2 2.0.14-6.el6_4 Red Hat Enterprise Linux Server Optional (v. 6) gnupg2 2.0.14-6.el6_4, gnupg2-smime 2.0.14-6.el6_4
    +2 more products
    Red Hat Enterprise Linux Workstation (v. 6) gnupg2 2.0.14-6.el6_4 Red Hat Enterprise Linux Workstation Optional (v. 6) gnupg2 2.0.14-6.el6_4, gnupg2-smime 2.0.14-6.el6_4
    fixed: vendor fix RHSA-2013:1459
  • Red Hat Enterprise Linux 7 gnupg2, gnupg2-smime
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

2.52% chance of exploitation in the next 30 days, higher than 84% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 2.0 5.8 AV:N/AC:M/Au:N/C:P/I:P/A:N

Classification

Weakness

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.