CVE-2020-14929

Severity: high (CVSS 7.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.8% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2020-06-19 · updated 2026-06-17

Description

Alpine before 2.23 silently proceeds to use an insecure connection after a /tls is sent in certain circumstances involving PREAUTH, which is a less secure behavior than the alternative of closing the connection and letting the user decide what they would like to do.

Affected products

stevespringett alpine: before 2.23 — fixed in 2.23
Debian Linux: 8.0
Fedoraproject Fedora: 31, 32

How to fix

Upgrade to a fixed version: stevespringett alpine 2.23. Check the vendor advisory for mitigations.

References

http://mailman13.u.washington.edu/pipermail/alpine-info/2020-June/008989.html
https://lists.debian.org/debian-lts-announce/2020/06/msg00025.html
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YFXQGKZZMP3VSTLZVO5Z7Z6USYIW37A6/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZJLY6JDVGDNAJZ3UQDWYWSDBWOAOXMNX/
http://mailman13.u.washington.edu/pipermail/alpine-info/2020-June/008989.html
https://lists.debian.org/debian-lts-announce/2020/06/msg00025.html
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YFXQGKZZMP3VSTLZVO5Z7Z6USYIW37A6/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZJLY6JDVGDNAJZ3UQDWYWSDBWOAOXMNX/

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