CVE-2019-13050

Severity: high (CVSS 7.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 2.5% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2019-06-29 · updated 2026-06-17
Weakness: CWE-295

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.

Affected products

F5 Traffix SDC: from 5.0.0 through 5.1.0
Fedoraproject Fedora: 29, 30
GnuPG: through 2.2.16
openSUSE Leap: 15.0, 15.1
Sks Keyserver Project Sks Keyserver: through 1.2.0

References

http://lists.opensuse.org/opensuse-security-announce/2019-08/msg00039.html
https://gist.github.com/rjhansen/67ab921ffb4084c865b3618d6955275f
https://lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b%40%3Cissues.bookkeeper.apache.org%3E
https://lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a450893651e4%40%3Cissues.bookkeeper.apache.org%3E
https://lists.apache.org/thread.html/rf9fa47ab66495c78bb4120b0754dd9531ca2ff0430f6685ac9b07772%40%3Cdev.mina.apache.org%3E
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/AUK2YRO6QIH64WP2LRA5D4LACTXQPPU4/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CP4ON34YEXEZDZOXXWV43KVGGO6WZLJ5/
https://lists.gnupg.org/pipermail/gnupg-announce/2019q3/000439.html
https://support.f5.com/csp/article/K08654551
https://support.f5.com/csp/article/K08654551?utm_source=f5support&amp%3Butm_medium=RSS
https://twitter.com/lambdafu/status/1147162583969009664
http://lists.opensuse.org/opensuse-security-announce/2019-08/msg00039.html

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