CVE-2016-7795: canonical ubuntu_linux Improper Input Validation
CVSS: 5.5v3.0MediumModified
AliasesMGASA-2016-0380RHSA-2016:2610RHSA-2016:2694UBUNTU-CVE-2016-7795DEBIAN-CVE-2016-7795
Published 13-10-2016Last modified 06-08-2024
Vulnerability summary
CVE-2016-7795 is a medium (CVSS 5.5) Improper Input Validation vulnerability in canonical ubuntu_linux. EPSS estimates a 0.63% chance of exploitation in the next 30 days, higher than 49% of scored vulnerabilities. 2 public exploits are recorded.
CVSS score
5.5/10
010
Medium · v3.0 (NVD)EPSS score
0.63%
0%100%
Low · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits2github, reference
Advisory lineage
Upstream 0 · Downstream 0 · Related 1Timeline
- 13-10-2016PublishedVulnerability first disclosed.
- 06-08-2024Last modifiedVulnerability information updated.
Description
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.
CVSS metrics
5 scores · 4 sources · 2 versionsMedium 5.5Preferred score · NVD (NIST)
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HSources4 sources · 5.5–6.8
- OSV · Red hatEcosystem advisory · calculated6.8MediumCVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:HDiffers
- OSV · UbuntuEcosystem advisory · calculated5.5MediumCVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- OSV · DebianEcosystem advisory · calculated5.5MediumCVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Medium 4.9Preferred score · NVD (NIST)
AV:L/AC:L/Au:N/C:N/I:N/A:CSourcesSingle source
EPSS trend
Probability
0.63%
Chance of exploitation in the next 30 days
Percentile
49%
Versus all other CVEs
30-day change
0.00 pp
From 0.63% on 18-09-2026
18-09-202618-10-2026
EPSS score0.63%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
2 foundSystemd
Maturity: poc
Exploit Reference (agwa.name)
Maturity: unknown
Weaknesses
CWE · root causeAffected systems
Redhat11 products
- libgudev1< 0:219-30.el7_3.3 | < 0:219-19.el7_2.18
- libgudev1-devel< 0:219-30.el7_3.3 | < 0:219-19.el7_2.18
- systemd< 0:219-30.el7_3.3 | < 0:219-19.el7_2.18
- systemd-debuginfo< 0:219-30.el7_3.3 | < 0:219-19.el7_2.18
- systemd-devel< 0:219-30.el7_3.3 | < 0:219-19.el7_2.18
Canonical1 product
- ubuntu_linuxEOL16.04
Debian1 product
- systemd< 231-9
Mageia1 product
- systemd< 217-11.2.mga5
Systemd_project1 product
- systemd≤ 231
Ubuntu1 product
- systemd< 229-4ubuntu10
6 vendors · 16 products
References
29 links- www.agwa.name/blog/post/how_to_crash_systemd_in_one_tweetX Refsource MISCExploitTechnical DescriptionThird Party Advisory
