accountsservice .pam_environment infinite loop
CVE-2020-16127

2.8LOW

Key Information:

Vendor

Freedesktop

Status
Accountsservice
Vendor
CVE Published:
11 November 2020
đź”” Create Freedesktop Vulnerability Alert

What is 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.

Affected Version(s)

accountsservice 0.6.35-0ubuntu7.3 < 0.6.35-0ubuntu7.3+esm2

accountsservice 0.6.40-2ubuntu11 < 0.6.40-2ubuntu11.6

accountsservice 0.6.45-1ubuntu1 < 0.6.45-1ubuntu1.3

References

https://securitylab.github.com/advisories/GHSL-2020-187-a...
x_refsource_MISC

CVSS V3.1

Score:
2.8
Severity:
LOW
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Local
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
Required
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Kevin Backhouse
.