Vulnerability · Published Jan 25, 2023 · Assigned by mitre
CVE-2020-36657
High 7.8
In plain English
A high-severity security flaw in the uptimed package (Ubuntu). Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 36% of all known vulnerabilities).
Severity (CVSS 3.1)7.8High
Exploit odds (30 days)0.4%top 64.1% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official description
uptimed before 0.4.6-r1 on Gentoo allows local users (with access to the uptimed user account) to gain root privileges by creating a hard link within the /var/spool/uptimed directory, because there is an unsafe chown -R call.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu:22.04:LTS | uptimed | no fix listed | UBUNTU-CVE-2020-36657 |
| Ubuntu:24.04:LTS | uptimed | no fix listed | UBUNTU-CVE-2020-36657 |
| Ubuntu:25.10 | uptimed | no fix listed | UBUNTU-CVE-2020-36657 |
| Ubuntu:26.04:LTS | uptimed | no fix listed | UBUNTU-CVE-2020-36657 |
| Ubuntu:26.10 | uptimed | no fix listed | UBUNTU-CVE-2020-36657 |
Affected products (as reported)
Weakness: CWE-59 · Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
References
- https://bugs.gentoo.org/630810
- GLSA-202305-14 vendor-advisory