Vulnerability in Debian Gnu/linux Tmpreaper
CVE-2019-3461
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.
Vulnerability class: Race Condition
EPSS: 0.003 (16.8th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.0 (High). Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Debian Gnu/linux Tmpreaper — versions 1.6.13+nmu1
- Debian Debian_linux — versions 8.0, 9.0
- Debian Tmpreaper — versions 1.6.13\+nmu1
Weakness classification (CWE)
Public proof-of-concept exploits
References
- security@debian.org (Vendor Advisory, mailing-list, x_refsource_MLIST)
- security@debian.org (Mailing List, x_refsource_MISC, Vendor Advisory)
- security@debian.org (vendor-advisory, Mailing List, x_refsource_DEBIAN, Vendor Advisory)
- security@debian.org (x_refsource_UBUNTU, vendor-advisory)
Frequently asked questions
- What is CVE-2019-3461?
- CVE-2019-3461 is a high-severity vulnerability in Debian Gnu/linux Tmpreaper, classified under Concurrent Execution using Shared Resource with Improper Synchronization (Race Condition). CVSS score: 7.0/10. Published 2019-02-04.
- How severe is CVE-2019-3461?
- High severity. CVSS v3 base score is 7.0 out of 10.
- Is CVE-2019-3461 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.