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No exploitation reportedFix available

CVE-2019-13050

No exploitation reported by the sources we read.

  • Published2019-06-29
  • WeaknessCWE-295

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

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.

Timeline

dates in UTC
  1. 2019-06-2917:15CVE publishedNVD

Versions per branch

NVD
Gnupg
BranchAffectedFixed in
2.2≤ 2.2.16no fix published
Fedoraproject fedora
BranchAffectedFixed in
29.x= 29no fix published
30.x= 30no fix published
Opensuse leap
BranchAffectedFixed in
15.0= 15.0no fix published
15.1= 15.1no fix published

2 more products in the sources.

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

  • gnupgUbuntu:Pro:16.04:LTSall versions · no fixed version listedand 1 other package
  • gnupgUbuntu:Pro:14.04:LTSall versions · no fixed version listed
  • gnupg2Ubuntu:18.04:LTSall versions · fixed in 2.2.4-1ubuntu1.5
  • gnupg2Rocky Linux:8all versions · fixed in 0:2.2.20-2.el8
  • gnupg2Red Hat:enterprise_linux:8::baseosall versions · fixed in 0:2.2.20-2.el8and 4 other packages
  • gnupg2AlmaLinux:8all versions · fixed in 2.2.20-2.el8and 1 other package
  • gpg2SUSE:Linux Enterprise Server for SAP Applications 12 SP4all versions · fixed in 2.0.24-9.8.1
  • gpg2SUSE:Linux Enterprise Server 12 SP4all versions · fixed in 2.0.24-9.8.1

8 more package ranges on OSV.dev

Vendor advisories

  • CVE-2019-13050 Red Hat Product Security21 products fixed · 8 known affected

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

    gnupg.src as a component of Red Hat Enterprise Linux 5 · gnupg2.src as a component of Red Hat Enterprise Linux 5 · gnupg2 as a component of Red Hat Enterprise Linux 6 · +5 more

  • RHSA-2020:4490 Red Hat Product Security21 products fixed

    Red Hat Security Advisory: gnupg2 security, bug fix, and enhancement update

Full record on NVD

Fix

  1. Vendor fix Red Hat Product Security RHSA-2020:4490 · 21 productsFor details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
  2. Workaround from the vendor Red Hat Product Security RHSA-2020:4490 · 21 productsAs per upstream: High-risk users should stop using the keyserver network immediately. 1. Open ~/.gnupg/gpg.conf in a text editor. Ensure there is no line starting with keyserver. If there is, remove it. 2. Open ~/.gnupg/dirmngr.conf in a text editor. Add the line "keyserver hkps://keys.openpgp.or…
  3. No fix planned, says the vendor Red Hat Product Security CVE-2019-13050 · 5 productsOut of support scope
  4. No fix planned, says the vendor Red Hat Product Security CVE-2019-13050 · 3 productsWill not fix

Advisories and patches

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof of concept
Metasploit modules
none listed
Metasploit Framework

Sources

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Published
2019-06-29
Last Modified
2026-06-17
NVD status
Modified
GitHub Advisory
GHSA-ch5h-mpfr-fhxh

Frequently asked questions

What is CVE-2019-13050?

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.

Is CVE-2019-13050 actively exploited?

Active exploitation of CVE-2019-13050 has not been confirmed. Its EPSS score was 2.4% on 2026-11-08, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2019-13050?

CVE-2019-13050 has a CVSS v3 base score of 7.5 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

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