VulnerabilityAnalyzed
CVE-2021-3899
There is a race condition in the 'replaced executable' detection that, with the correct local configuration, allow an attacker to execute arbitrary code as root.
HIGH 7.8EPSS 0.38%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.38%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
There is a race condition in the 'replaced executable' detection that, with the correct local configuration, allow an attacker to execute arbitrary code as root.
- CVSS 3.1
- 7.8 HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 0.38% probability · 32th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-367
- Affected
- canonical/apport · canonical/ubuntu linux
- Source
- security@ubuntu.com
References
- https://bugs.launchpad.net/ubuntu/+source/apport/+bug/1948376Issue Tracking, Patch
- https://ubuntu.com/security/notices/USN-5427-1Vendor Advisory
- https://www.cve.org/CVERecord?id=CVE-2021-3899Third Party Advisory
- https://bugs.launchpad.net/ubuntu/+source/apport/+bug/1948376Issue Tracking, Patch
- https://ubuntu.com/security/notices/USN-5427-1Vendor Advisory
- https://www.cve.org/CVERecord?id=CVE-2021-3899Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.