VulnerabilityModified

CVE-2011-3145

When mount.ecrpytfs_private before version 87-0ubuntu1.2 calls setreuid() it doesn't also set the effective group id.

CRITICAL 9.8EPSS 0.98%

Does this matter?

High impact if exploited, but EPSS currently rates exploitation as unlikely (0.98%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.

Description

When mount.ecrpytfs_private before version 87-0ubuntu1.2 calls setreuid() it doesn't also set the effective group id. So when it creates the new version, mtab.tmp, it's created with the group id of the user running mount.ecryptfs_private.

CVSS 3.0: 9.8 CRITICALCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS: 0.98% probability · 60th percentile
CISA KEV: Not listed
Weakness: CWE-254
Affected: mount.ecrpytfs private project/mount.ecrpytfs private
Source: cve@mitre.org

References

http://bazaar.launchpad.net/~ecryptfs/ecryptfs/trunk/revision/558Patch, Third Party Advisory
http://bazaar.launchpad.net/~ecryptfs/ecryptfs/trunk/revision/558Patch, Third Party Advisory

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.