CVE-2023-40477
libclamunrar - security update
Description
RARLAB WinRAR Recovery Volume Improper Validation of Array Index Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of RARLAB WinRAR. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The specific flaw exists within the processing of recovery volumes. The issue results from the lack of proper validation of user-supplied data, which can result in a memory access past the end of an allocated buffer. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-21233.
How to fix CVE-2023-40477
To remediate CVE-2023-40477, upgrade the affected package to a fixed version below.
- —upgrade to 0.103.10-1~deb11u1 or later
- —upgrade to 0.103.10-0+deb10u1 or later
- —upgrade to 2:6.23-1~deb11u1 or later
- —upgrade to 2:6.23-1~deb10u1 or later
- —upgrade to 1:6.0.3-1+deb11u3 or later
- —upgrade to 1:5.6.6-1+deb10u4 or later
Is CVE-2023-40477 being exploited?
Likely — EPSS is 91.9%, placing CVE-2023-40477 in the top tier of vulnerabilities by exploitation probability. Prioritise patching.
Affected packages (6)
- from 0, < 0.103.10-1~deb11u1
- from 0, < 0.103.10-0+deb10u1
- from 0, < 2:6.23-1~deb11u1
- from 0, < 2:6.23-1~deb10u1
- from 0, < 1:6.0.3-1+deb11u3
- from 0, < 1:5.6.6-1+deb10u4
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH7.8 | CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |