VulnerabilityModified
CVE-2018-6557
A local attacker could use this issue to cause a denial of service, or possibly escalate privileges if kernel symlink restrictions were disabled.
HIGH 7.0EPSS 0.36%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.36%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
The MOTD update script in the base-files package in Ubuntu 18.04 LTS before 10.1ubuntu2.2, and Ubuntu 18.10 before 10.1ubuntu6 incorrectly handled temporary files. A local attacker could use this issue to cause a denial of service, or possibly escalate privileges if kernel symlink restrictions were disabled.
- CVSS 3.1
- 7.0 HIGHCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 0.36% probability · 30th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-59
- Affected
- base-files project/base-files · canonical/ubuntu linux
- Source
- security@ubuntu.com
References
- http://www.securityfocus.com/bid/105148Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1041530Broken Link, Third Party Advisory, VDB Entry
- https://usn.ubuntu.com/3748-1/Vendor Advisory
- http://www.securityfocus.com/bid/105148Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1041530Broken Link, Third Party Advisory, VDB Entry
- https://usn.ubuntu.com/3748-1/Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.