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Fencer Intel
high 7.5

CVE-2019-13050 json

Interaction between the sks-keyserver code through 1.2.0 of the SKS keyserver network, and GnuPG through 2.2.16, makes it risky to have a G…

published 7y ago modified 4mo ago also EUVD-2019-4610

cvss
7.5
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
2.4%
EPSS 2.4% chance of exploitation in 30 days, percentile 84%
public exploits
0
none known

Summary

Interaction between the sks-keyserver code through 1.2.0 of the SKS keyserver network, and GnuPG through 2.2.16, makes it risky to have a GnuPG keyserver configuration line referring to a host on the SKS keyserver network. Retrieving data from this network may cause a persistent denial of service, because of a Certificate Spamming Attack.

Patch / fix

  • gnupg2 Ubuntu 18.04 LTS 2.2.4-1ubuntu1.5

ubuntu advisories UBUNTU-CVE-2019-13050

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • gnupg2 RHEL 8 2.2.20-2.el8
  • gnupg2-smime RHEL 8 2.2.20-2.el8

red hat advisories RHSA-2020:4490

  • gpg2 SLES for SAP 12 SP4, SLES 12 SP4, SLED 12 SP4 2.0.24-9.8.1
  • gpg2 SLE Module for Basesystem 15 SP1, SLE Module for Basesystem 15 2.2.5-4.11.1

suse advisories SUSE-SU-2019:2480-1SUSE-SU-2019:2006-1

  • gpg2 openSUSE Leap 15.1, openSUSE Leap 15.0 2.2.5-lp151.6.3.1

opensuse advisories openSUSE-SU-2019:1917-1

  • gnupg2 AlmaLinux 8 2.2.20-2.el8
  • gnupg2-smime AlmaLinux 8 2.2.20-2.el8

almalinux advisories ALSA-2020:4490

  • gnupg2 Rocky Linux 8 2.2.20-2.el8

rocky linux advisories RLSA-2020:4490

Is CVE-2019-13050 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.

Check with Fencer

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-2019-13050 updated cvss 6.5

GnuPG: interaction between the sks-keyserver code and GnuPG allows for a Certificate Spamming Attack which leads to persistent DoS

  • Red Hat Enterprise Linux 5 gnupg, gnupg2 Red Hat Enterprise Linux 6 gnupg2, gnupg2-smime
    affected: workaround, no fix planned “Out of support scope”
  • Red Hat Enterprise Linux 7 gnupg2, gnupg2-smime
    affected: workaround, no fix planned “Will not fix”
  • Red Hat Enterprise Linux BaseOS (v. 8) gnupg2 2.2.20-2.el8, gnupg2-smime 2.2.20-2.el8
    fixed: vendor fix RHSA-2020:4490

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

2.45% chance of exploitation in the next 30 days, higher than 84% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • gist.github.com https://gist.github.com/rjhansen/67ab921ffb4084c865b3618d6955275f referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD 2.0 5.0 AV:N/AC:L/Au:N/C:N/I:N/A:P

Classification

Weakness
  • CWE-295 Improper Certificate Validation

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.