CVE-2012-6706
libclamunrar - security update
9.8
CRITICAL
CVSS 3.1
EPSS 2.4%
Description
A VMSF_DELTA memory corruption was discovered in unrar before 5.5.5, as used in Sophos Anti-Virus Threat Detection Engine before 3.37.2 and other products, that can lead to arbitrary code execution. An integer overflow can be caused in DataSize+CurChannel. The result is a negative value of the "DestPos" variable, which allows the attacker to write out of bounds when setting Mem[DestPos].
How to fix CVE-2012-6706
To remediate CVE-2012-6706, upgrade the affected package to a fixed version below.
- —upgrade to 0.99.4-r0 or later
- —upgrade to 0.99-4 or later
- —upgrade to 0.99-0+deb7u2 or later
- —upgrade to 1:5.5.5-1 or later
- —upgrade to 1:4.1.4-1+deb7u2 or later
Is CVE-2012-6706 being exploited?
Low — EPSS is 2.4%, meaning exploitation activity has not been observed at scale.
Affected packages (5)
- from 0, < 0.99.4-r0
- from 0, < 0.99-4
- from 0, < 0.99-0+deb7u2
- from 0, < 1:5.5.5-1
- from 0, < 1:4.1.4-1+deb7u2
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | CRITICAL9.8 | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |