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Fencer Intel
low 1.9

CVE-2013-4242 json

GnuPG before 1.4.14, and Libgcrypt before 1.5.3 as used in GnuPG 2.0.x and possibly other products, allows local users to obtain private RS…

published 13y ago modified 4mo ago also EUVD-2013-4146

cvss
1.9
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.5%
EPSS 0.5% chance of exploitation in 30 days, percentile 45%
public exploits
0
none known

Summary

GnuPG before 1.4.14, and Libgcrypt before 1.5.3 as used in GnuPG 2.0.x and possibly other products, allows local users to obtain private RSA keys via a cache side-channel attack involving the L3 cache, aka Flush+Reload.

Patch / fix

  • gnupg RHEL 5 1.4.5-18.el5_10
  • libgcrypt RHEL 5 1.4.4-7.el5_10
  • libgcrypt RHEL 6 1.4.5-11.el6_4

red hat advisories RHSA-2013:1458RHSA-2013:1457

  • libgcrypt openSUSE Tumbleweed 1.7.3-1.3

opensuse advisories openSUSE-SU-2024:10037-1

Is CVE-2013-4242 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-2013-4242 updated cvss 1.9

GnuPG susceptible to Yarom/Falkner flush+reload cache side-channel attack

  • Red Hat Enterprise Linux (v. 5 server) gnupg 1.4.5-18.el5_10, libgcrypt 1.4.4-7.el5_10 Red Hat Enterprise Linux Desktop (v. 5 client) gnupg 1.4.5-18.el5_10, libgcrypt 1.4.4-7.el5_10
    fixed: vendor fix RHSA-2013:1458
  • Red Hat Enterprise Linux Desktop (v. 6) libgcrypt 1.4.5-11.el6_4 Red Hat Enterprise Linux Desktop Optional (v. 6) libgcrypt 1.4.5-11.el6_4 Red Hat Enterprise Linux Desktop Workstation (v. 5 client) libgcrypt 1.4.4-7.el5_10 Red Hat Enterprise Linux HPC Node (v. 6) libgcrypt 1.4.5-11.el6_4 Red Hat Enterprise Linux HPC Node Optional (v. 6) libgcrypt 1.4.5-11.el6_4 Red Hat Enterprise Linux Server (v. 6) libgcrypt 1.4.5-11.el6_4
    +1 more products
    Red Hat Enterprise Linux Workstation (v. 6) libgcrypt 1.4.5-11.el6_4
    fixed: vendor fix RHSA-2013:1457
  • Red Hat Enterprise Linux 7 libgcrypt
    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

0.53% chance of exploitation in the next 30 days, higher than 45% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 2.0 1.9 AV:L/AC:M/Au:N/C:P/I:N/A:N

Classification

Weakness
  • CWE-200 Exposure of Sensitive Information to an Unauthorized Actor

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.