CVE-2017-15132

NameCVE-2017-15132
DescriptionA 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.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub code/issues, web search, more)
ReferencesDLA-1333-1, DSA-4130-1
NVD severitymedium (attack range: remote)
Debian Bugs888432

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
dovecot (PTS)jessie (security), jessie1:2.2.13-12~deb8u4fixed
stretch (security), stretch1:2.2.27-3+deb9u2fixed
buster, sid1:2.2.36-1fixed

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
dovecotsource(unstable)1:2.2.34-1medium888432
dovecotsourcejessie1:2.2.13-12~deb8u4mediumDSA-4130-1
dovecotsourcestretch1:2.2.27-3+deb9u2mediumDSA-4130-1
dovecotsourcewheezy1:2.1.7-7+deb7u2mediumDLA-1333-1

Notes

Fixed by: https://github.com/dovecot/core/commit/1a29ed2f96da1be22fa5a4d96c7583aa81b8b060.patch
Regression fix needed on top: https://github.com/dovecot/core/commit/a9b135760aea6d1790d447d351c56b78889dac22
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