Privilege escalation in Freedesktop Accountsservice
CVE-2020-16126
An Ubuntu-specific modification to AccountsService in versions before 0.6.55-0ubuntu13.2, among other earlier versions, improperly dropped the ruid, allowing untrusted users to send signals to AccountService, thus stopping it from handling D-Bus messages in a timely fashion.
Vulnerability class: Privilege Escalation
EPSS: 0.005 (42.3th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 3.3 (Low). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L.
Affected products
- Freedesktop Accountsservice — versions 0.6.35-0ubuntu7.3, 0.6.40-2ubuntu11, 0.6.45-1ubuntu1
Weakness classification (CWE)
Public proof-of-concept exploits
References
- security@ubuntu.com (Exploit, Third Party Advisory, x_refsource_MISC)
Frequently asked questions
- What is CVE-2020-16126?
- CVE-2020-16126 is a low-severity vulnerability in Freedesktop Accountsservice, classified under Improper Privilege Management. CVSS score: 3.3/10. Published 2020-11-11.
- How severe is CVE-2020-16126?
- Low severity. CVSS v3 base score is 3.3 out of 10.
- Is CVE-2020-16126 known to be exploited?
- 6 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.