CVE-2020-16126
accountsservice drops ruid, allows unprivileged users to send it signals
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- Fix
- Fixed in 0.6.35-0ubuntu7.3+esm2, 0.6.40-2ubuntu11.6, 0.6.45-1ubuntu1.3, 0.6.55-0ubuntu12~20.04.4, 0.6.55-0ubuntu13.2
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- 1 proof of concept on GitHub
Summary
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.
Timeline
- CVE published
- Record last updated
Affected versions
- Freedesktop accountsservice
From 0.6.35-0ubuntu7.3 · fixed in 0.6.35-0ubuntu7.3+esm2; From 0.6.40-2ubuntu11 · fixed in 0.6.40-2ubuntu11.6; From 0.6.45-1ubuntu1 · fixed in 0.6.45-1ubuntu1.3; From 0.6.55-0ubuntu · fixed in 0.6.55-0ubuntu12~20.04.4; From 0.6.55-0ubuntu13 · fixed in 0.6.55-0ubuntu13.2