7.0high
CVE-2018-6557
Insecure temporary file use in base-files
Published 8 y ago · modified 4 mo ago · JSON
CVSS
7.0
v3.1 · NVD
CISA KEV
No
not known exploited
EPSS
0.4%
percentile 31%
Public exploits
0
none known
Summary
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.
Exploit prediction (EPSS)
0.37% probability of exploitation in the next 30 days, higher than 31% of all scored CVEs.
CVSS scores
| Assigned by | Version | Score | Vector |
|---|---|---|---|
| NVD | 3.1 | 7.0 | CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H |
| NVD | 2.0 | 4.4 | AV:L/AC:M/Au:N/C:P/I:P/A:P |
Affected products
- Ubuntu base-files
Classification
- Weakness
- CWE-59 Improper Link Resolution Before File Access
References
- usn.ubuntu.com /3748-1/ · vendor-advisory, x_refsource_UBUNTU, x_transferred
- securitytracker.com /id/1041530 · vdb-entry, x_refsource_SECTRACK, x_transferred
- securityfocus.com /bid/105148 · vdb-entry, x_refsource_BID, x_transferred
Sources
- CVE List: CVE-2018-6557
- NVD: CVE-2018-6557
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