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CVE-2019-3461

Published: 4 February 2019

Debian 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.

Notes

AuthorNote
ebarretto
Version on trusty needs the fix, but the fix depends on bind mounts
from util-linux package. And the util-linux in trusty doesn't
contain that feature. We could use another solution but I am not
sure how this might affect the race condition.

Priority

Medium

Cvss 3 Severity Score

7.0

Score breakdown

Status

Package Release Status
tmpreaper
Launchpad, Ubuntu, Debian
bionic
Released (1.6.13+nmu1+deb9u1build0.18.04.1)
cosmic Ignored
(end of life)
disco Not vulnerable
(1.6.14)
eoan Not vulnerable
(1.6.14)
impish Not vulnerable
(1.6.14)
groovy Not vulnerable
(1.6.14)
hirsute Not vulnerable
(1.6.14)
jammy Not vulnerable
(1.6.14)
kinetic Not vulnerable
(1.6.14)
lunar Not vulnerable
(1.6.14)
focal Not vulnerable
(1.6.14)
trusty Needed

upstream
Released (1.6.14)
xenial
Released (1.6.13+nmu1+deb9u1build0.16.04.1)
mantic Not vulnerable
(1.6.14)

Severity score breakdown

Parameter Value
Base score 7.0
Attack vector Local
Attack complexity High
Privileges required Low
User interaction None
Scope Unchanged
Confidentiality High
Integrity impact High
Availability impact High
Vector CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H