CVE-2019-3461

NameCVE-2019-3461
DescriptionDebian tmpreaper version 1.6.13+nmu1 has a race condition when doing a (bind) mount via rename() which could result in local privilege escalation. Mounting via rename() could potentially lead to a file being placed elsewhereon the filesystem hierarchy (e.g. /etc/cron.d/) if the directory being cleaned up was on the same physical filesystem. Fixed versions include 1.6.13+nmu1+deb9u1 and 1.6.14.
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-1640-1, DSA-4365-1
NVD severitymedium (attack range: local)
Debian Bugs918956

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
tmpreaper (PTS)jessie1.6.13+nmu1vulnerable
jessie (security)1.6.13+nmu1+deb8u1fixed
stretch (security), stretch1.6.13+nmu1+deb9u1fixed
buster, sid1.6.14fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
tmpreapersource(unstable)1.6.14medium918956
tmpreapersourcejessie1.6.13+nmu1+deb8u1mediumDLA-1640-1
tmpreapersourcestretch1.6.13+nmu1+deb9u1mediumDSA-4365-1

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