CVE-2020-16127

An Ubuntu-specific modification to AccountsService in versions before 0.6.55-0ubuntu13.2, among other earlier versions, would perform unbounded read operations on user-controlled ~/.pam_environment files, allowing an infinite loop if /dev/zero is symlinked to this location.

CVSS v3.1

5.5 MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CVSS v3.1

2.8 LOWCVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:L

CVSS v2.0

2.1 LOWAV:L/AC:L/Au:N/C:N/I:N/A:P

EPSS

0.41% chance of exploitation in the next 30 days, 34th percentile

Published

2020-11-11

Updated

2024-09-16

Proof-of-concept exploits (2)

• https://securitylab.github.com/advisories/GHSL-2020-187-accountsservice-drop-privs-DOS
• zev3n/Ubuntu-Gnome-privilege-escalation3★ · 2020-11-12

References

• CVE Record
• NVD entry

Related

• CVE-2020-16126
• CVE-2020-16135
• CVE-2020-16125
• CVE-2020-16137
• CVE-2020-1611
• CVE-2020-16138