CVE-2020-16126 - CVE House
Back to Database
Status published Low CVE-2020-16126

accountsservice drops ruid, allows unprivileged users to send it signals

Vulnerability Description

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.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

THREAT MONITOR

Am I Vulnerable?

Launch our assessment wizard to check if your infrastructure is exposed to • CVE-2020-16126

Credits & Attribution

The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:

  • Kevin Backhouse

References

More from Freedesktop

View All →
CVE-2020-16127
accountsservice .pam_environment infinite loop
Low 2.8

Affected Vendor

Freedesktop

View all reports →

Affected Software

accountsservice
Vulnerable Versions:
0.6.35-0ubuntu7.3, 0.6.40-2ubuntu11, 0.6.45-1ubuntu1, 0.6.55-0ubuntu, 0.6.55-0ubuntu13

Timeline

Official Publish: November 11th, 2020
Last Modified: September 16th, 2024
Added to House: July 21st, 2026

CVSS Vectors

V3: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

Weaknesses (CWE)

CWE-269

MITRE ATT&CK TTPs

T1078 Valid Accounts
Persistence
T1098 Account Manipulation
Privilege Escalation
T1548 Abuse Elevation Control Mechanism
Privilege Escalation
T1222 File and Directory Permissions Modification
Defense Evasion
T1134 Access Token Manipulation
Defense Evasion