CVE-2017-15132

Severity: high (CVSS 7.5 v3.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 3.1% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2018-01-25 · updated 2026-06-17
Weakness: CWE-400

Description

A flaw was found in dovecot 2.0 up to 2.2.33 and 2.3.0. An abort of SASL authentication results in a memory leak in dovecot's auth client used by login processes. The leak has impact in high performance configuration where same login processes are reused and can cause the process to crash due to memory exhaustion.

Affected products

Canonical Ubuntu Linux: 12.04, 14.04, 16.04, 17.10
Debian Linux: 7.0, 8.0, 9.0
dovecot: from 2.0.0 through 2.2.33; 2.3.0

References

https://bugzilla.redhat.com/show_bug.cgi?id=1532768
https://github.com/dovecot/core/commit/1a29ed2f96da1be22fa5a4d96c7583aa81b8b060.patch
https://lists.debian.org/debian-lts-announce/2018/03/msg00036.html
https://usn.ubuntu.com/3556-1/
https://usn.ubuntu.com/3556-2/
https://www.debian.org/security/2018/dsa-4130
https://www.dovecot.org/list/dovecot-news/2018-February/000370.html
https://bugzilla.redhat.com/show_bug.cgi?id=1532768
https://github.com/dovecot/core/commit/1a29ed2f96da1be22fa5a4d96c7583aa81b8b060.patch
https://lists.debian.org/debian-lts-announce/2018/03/msg00036.html
https://usn.ubuntu.com/3556-1/
https://usn.ubuntu.com/3556-2/

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