CVE-2019-15900
The result was that, instead of reporting that the supplied username or group name did not exist, it would execute the command as root.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (2.11%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
An issue was discovered in slicer69 doas before 6.2 on certain platforms other than OpenBSD. On platforms without strtonum(3), sscanf was used without checking for error cases. Instead, the uninitialized variable errstr was checked and in some cases returned success even if sscanf failed. The result was that, instead of reporting that the supplied username or group name did not exist, it would execute the command as root.
- CVSS 3.1
- 9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 2.11% probability · 81th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-252, CWE-754, CWE-863, CWE-908
- Affected
- doas project/doas
- Source
- cve@mitre.org
References
- https://github.com/slicer69/doas/commit/2f83222829448e5bc4c9391d607ec265a1e06531Patch
- https://github.com/slicer69/doas/compare/6.1p1...6.2Release Notes
- https://github.com/slicer69/doas/commit/2f83222829448e5bc4c9391d607ec265a1e06531Patch
- https://github.com/slicer69/doas/compare/6.1p1...6.2Release Notes
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.