Slackware Linux update for libarchive

1) Buffer overflow

EUVDB-ID: #VU25338

Risk: High

CVSSv3.1: 7.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: N/A

CWE-ID: CWE-119 - Memory corruption

Exploit availability: No

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error in libarchive/archive_read_support_format_rar5.c when processing RAR5 archive headers. A remote attacker can create a specially crafted RAR5 archive, trick the victim into opening it, trigger memory corruption and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation

Update the affected package libarchive.

Vulnerable software versions

Slackware Linux: 14.1 - 14.2

External links

http://www.slackware.com/security/viewer.php?l=slackware-security&y=2020&m=slackware-security.375331

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

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