CVE-2019-13050 — Improper Certificate Validation in Gnupg

CWE-295 — Improper Certificate ValidationCWE-297 — Improper Validation of Certificate with Host Mismatch9 documents7 sources
Severity
7.5HIGHNVD
EPSS
0.6%
top 31.88%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
5
F5 Traffix Signaling Delivery ControllerGnupgSKS Keyserver Project SKS Keyserver+2 more
Timeline
PublishedJun 29
Latest updateMay 30

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.

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HExploitability: 3.9 | Impact: 3.6

Affected Packages4 packages

▶NVDgnupg/gnupg2.2.16
▶NVDopensuse/leap15.0, 15.1+1

Also affects: Fedora 29, 30

🔴Vulnerability Details

3
GHSA
GHSA-ch5h-mpfr-fhxh: Interaction between the sks-keyserver code through 1↗2022-05-24
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OSV
CVE-2019-13050: Interaction between the sks-keyserver code through 1↗2019-06-29
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CVEList
CVE-2019-13050: Interaction between the sks-keyserver code through 1↗2019-06-29
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📋Vendor Advisories

2
Ubuntu
GnuPG vulnerability↗2022-05-30
▶
Red Hat
GnuPG: interaction between the sks-keyserver code and GnuPG allows for a Certificate Spamming Attack which leads to persistent DoS↗2019-06-29
▶

💬Community

3
Bugzilla
CVE-2019-13050 gnupg: interaction between the sks-keyserver code and GnuPG allows for a Certificate Spamming Attack which leads to persistent DoS [fedora-all]↗2019-07-02
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Bugzilla
CVE-2019-13050 gnupg2: GnuPG: interaction between the sks-keyserver code and GnuPG allows for a Certificate Spamming Attack which leads to persistent DoS [fedora-all]↗2019-07-02
▶
Bugzilla
CVE-2019-13050 GnuPG: interaction between the sks-keyserver code and GnuPG allows for a Certificate Spamming Attack which leads to persistent DoS↗2019-07-02
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CVE-2019-13050 — Improper Certificate Validation | cvebase