CVE-2018-6557 is a local privilege escalation and denial-of-service vulnerability affecting the MOTD update script in Ubuntu 18.04 LTS and 18.10. It stems from improper handling of temporary files, specifically CWE-59, within the base-files package. This high-severity vulnerability (CVSS 7.0) requires local access and high attack complexity, but could lead to significant impact on confidentiality, integrity, and availability if kernel symlink restrictions are disabled. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
10.1ubuntu2.2CPE matchmatch criteria | cpe:2.3:a:base-files_project:base-files:10.1ubuntu2.2:*:*:*:*:*:*:* | ||
18.04CPE matchmatch criteria | cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:* | ||
18.10CPE matchmatch criteria | cpe:2.3:o:canonical:ubuntu_linux:18.10:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.4 InfoSec Media, 0.1 Vendor Blog, and 0.0 Security Researcher mentions.
Remediation records are not available for this CVE.