Red Hat Enterprise Linux update for puppet-agent

1) Heap-based buffer overflow

EUVDB-ID: #VU81865

Risk: High

CVSSv3.1: 7.9 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C]

CVE-ID: CVE-2023-38545

CWE-ID: CWE-122 - Heap-based Buffer Overflow

Exploit availability: Yes

Description

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

The vulnerability exists due to a boundary error in the SOCKS5 proxy handshake. A remote attacker can trick the victim to visit a malicious website, trigger a heap-based buffer overflow and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system but requires that SOCKS5 proxy is used and that SOCKS5 handshake is slow (e.g. under heavy load or DoS attack).

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Red Hat Enterprise Linux for ARM 64: 8 - 9

Red Hat Enterprise Linux for Power, little endian: 7 - 9

Red Hat Enterprise Linux for IBM z Systems: 7 - 9

Red Hat Enterprise Linux Server - Extended Life Cycle Support: 6.0

Red Hat Enterprise Linux for Power, big endian: 7

Red Hat Enterprise Linux for x86_64: 8.0 - 9

Red Hat Enterprise Linux for Scientific Computing: 7

Red Hat Enterprise Linux Desktop: 7

Red Hat Enterprise Linux Workstation: 7

Red Hat Enterprise Linux Server: 7

rubygem-foreman_scap_client (Red Hat package): before 0.5.2-1.el9sat

puppet-agent (Red Hat package): before 7.27.0-1.el9sat

External links

http://access.redhat.com/errata/RHSA-2024:2011

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. However, proof of concept for this vulnerability is available.