CVE-2018-16881

NameCVE-2018-16881
DescriptionA denial of service vulnerability was found in rsyslog in the imptcp module. An attacker could send a specially crafted message to the imptcp socket, which would cause rsyslog to crash. Versions before 8.27.0 are vulnerable.
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)
NVD severitymedium (attack range: remote)

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
rsyslog (PTS)jessie8.4.2-1+deb8u2fixed
stretch8.24.0-1vulnerable
buster, sid8.40.0-1fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
rsyslogsource(unstable)8.27.0-2medium
rsyslogsourcejessie(not affected)

Notes

[stretch] - rsyslog <no-dsa> (Minor issue; imptcp not enabled by default)
[jessie] - rsyslog <not-affected> (Vulnerable code introduced in 8.13.1)
Fixed by: https://github.com/rsyslog/rsyslog/commit/0381a0de64a5a048c3d48b79055bd9848d0c7fc2
Introduced by: https://github.com/rsyslog/rsyslog/commit/6c52f29d593a27f934a1871d40eed84ebde3f3a6

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