Debian update for curl

1) Time-of-check Time-of-use (TOCTOU) Race Condition

EUVDB-ID: #VU78540

Risk: Low

CVSSv4.0: 0.1 [CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:A/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2023-32001

CWE-ID: CWE-367 - Time-of-check Time-of-use (TOCTOU) Race Condition

Exploit availability: No

Description

The vulnerability allows a local users to escalate privileges on the system.

The vulnerability exists due to a race condition when calling fopen() on STS and/or alt-svc data to files. A local user can create or rename directory entries in the directory the victim saves their files and abuse the symbolic link behavior to overwrite arbitrary files on the system.

Mitigation

Update curl package to version 7.88.1-10+deb12u1.

Vulnerable software versions

Debian Linux: All versions

curl (Debian package): before 7.88.1-10+deb12u1

CPE2.3

• cpe:2.3:o:debian:debian_linux:*:*:*:*:*:*:*:*
• cpe:2.3:a:debian:curl_debian_package:*:*:*:*:*:debian_linux:*:*

External links

https://www.debian.org/security/2023/dsa-5460

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.