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 2018-08-21 16:29:01
Updated 2023-01-18 21:22:39
View at NVD,   CVE.org
Vulnerability category: Denial of service

Threat overview for CVE-2018-6557

Top countries where our scanners detected CVE-2018-6557
Top open port discovered on systems with this issue 80
IPs affected by CVE-2018-6557 6,843
Threat actors abusing to this issue? Yes
Find out if you* are affected by CVE-2018-6557!
*Directly or indirectly through your vendors, service providers and 3rd parties. Powered by attack surface intelligence from SecurityScorecard.

Exploit prediction scoring system (EPSS) score for CVE-2018-6557

0.04%
Probability of exploitation activity in the next 30 days EPSS Score History
~ 6 %
Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2018-6557

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Score Source First Seen
4.4
MEDIUM AV:L/AC:M/Au:N/C:P/I:P/A:P
3.4
6.4
NIST
7.0
HIGH CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
1.0
5.9
NIST

CWE ids for CVE-2018-6557

References for CVE-2018-6557

Products affected by CVE-2018-6557

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