Vulnerability in Base-Files Project
CVE-2018-6557
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.0 (High). Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.004 (27.8th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 28th percentile — 27.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000
Affected products
- Base-Files Project — versions 10.1ubuntu2.2
- Canonical Ubuntu Linux — versions 18.04, 18.10
- Ubuntu Base-Files — versions unspecified
Weakness classification (CWE)
References
- usn.ubuntu.com/3748-1/ (vendor-advisory, Vendor Advisory)
- www.securitytracker.com/id/1041530 (VDB Entry, Third Party Advisory, vdb-entry, Broken Link)
- www.securityfocus.com/bid/105148 (VDB Entry, Third Party Advisory, vdb-entry)
Frequently asked questions
- What is CVE-2018-6557?
- CVE-2018-6557 is a high-severity vulnerability in Base-Files Project, classified under Improper Link Resolution Before File Access. CVSS score: 7.0/10. Published 2018-08-21.
- How severe is CVE-2018-6557?
- High severity. CVSS v3 base score is 7.0 out of 10.