Vulnerability · Published Nov 11, 2020 · Assigned by canonical
CVE-2020-16127accountsservice .pam_environment infinite loop
Low 2.8
In plain English
A low-severity improper input validation in accountsservice from Freedesktop. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 36% of all known vulnerabilities).
Severity (CVSS 3.1)2.8Low
Exploit odds (30 days)0.4%top 64.1% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official description
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 products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Freedesktop | accountsservice | 0.6.35-0ubuntu7.3 – before 0.6.35-0ubuntu7.3+esm20.6.40-2ubuntu11 – before 0.6.40-2ubuntu11.60.6.45-1ubuntu1 – before 0.6.45-1ubuntu1.30.6.55-0ubuntu – before 0.6.55-0ubuntu12~20.04.40.6.55-0ubuntu13 – before 0.6.55-0ubuntu13.2 |
Weakness: CWE-20 · Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:L