Improper input validation in Systemd Project
CVE-2016-7795
The manager_invoke_notify_message function in systemd 231 and earlier allows local users to cause a denial of service (assertion failure and PID 1 hang) via a zero-length message received over a notify socket.
Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.006 (48.2th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 48th percentile — 48.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: 0.000
Affected products
- Systemd Project
- Canonical Ubuntu Linux — versions 16.04
Weakness classification (CWE)
References
- www.openwall.com/lists/oss-security/2016/09/30/1 (mailing-list, Third Party Advisory)
- www.openwall.com/lists/oss-security/2016/09/28/9 (mailing-list, Third Party Advisory)
- www.securityfocus.com/bid/93223 (VDB Entry, Third Party Advisory, vdb-entry)
- rhn.redhat.com/errata/RHSA-2016-2610.html (vendor-advisory)
- www.agwa.name/blog/post/how_to_crash_systemd_in_one_tweet (Technical Description, Exploit, Third Party Advisory)
- www.ubuntu.com/usn/USN-3094-1 (vendor-advisory, Third Party Advisory)
- github.com/systemd/systemd/issues/4234 (Exploit, Patch, Third Party Advisory)
- www.securitytracker.com/id/1037320 (vdb-entry)
- rhn.redhat.com/errata/RHSA-2016-2694.html (vendor-advisory)
Frequently asked questions
- What is CVE-2016-7795?
- CVE-2016-7795 is a medium-severity vulnerability in Systemd Project, classified under Improper Input Validation. CVSS score: 5.5/10. Published 2016-10-13.
- How severe is CVE-2016-7795?
- Medium severity. CVSS v3 base score is 5.5 out of 10.