Vulnerability · Published Nov 11, 2020 · Assigned by canonical
CVE-2020-16126accountsservice drops ruid, allows unprivileged users to send it signals
Low 3.3
In plain English
A low-severity privilege mismanagement 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 0.5% (higher than 46% of all known vulnerabilities). Ready-made attack tooling exists: public proof-of-concept code.
Severity (CVSS 3.1)3.3Low
Exploit odds (30 days)0.5%top 54.3% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack tooling1Public PoC
Official 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.
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-269 · Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L