HPE Cray Servers update for OpenSSH

1) Race condition

EUVDB-ID: #VU93513

Risk: High

CVSSv3.1: 7.3 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C]

CVE-ID: CVE-2024-6387

CWE-ID: CWE-362 - Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

Exploit availability: Yes

Description

The vulnerability allows a remote attacker to compromise the affected system.

The vulnerability exists due to a race condition in portable version of sshd. A remote non-authenticated attacker can send a series of requests in order to trigger a race condition and execute arbitrary code on the system.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Cray EX254n: before 1.9.5-39

Cray EX4252: before 1.9.5-39

Cray EX425: before 1.9.5-39

Cray EX420: before 1.9.5-39

Cray EX255a: before 1.9.5-39

Cray EX235n Server: before 1.9.5-39

Cray EX235a: before 1.9.5-39

CPE2.3

• cpe:2.3:h:hpe:cray_ex254n:*:*:*:*:*:*:*:
• cpe:2.3:a:hpe:cray_ex4252_compute_blade:*:*:*:*:*:*:*:
• cpe:2.3:h:hpe:cray_ex425_server:*:*:*:*:*:*:*:
• cpe:2.3:h:hpe:cray_ex420:*:*:*:*:*:*:*:
• cpe:2.3:h:hpe:cray_ex255a:*:*:*:*:*:*:*:
• cpe:2.3:h:hpe:cray_ex235n_server:*:*:*:*:*:*:*:
• cpe:2.3:a:hpe:cray_ex235a_accelerator_blade:*:*:*:*:*:*:*:

External links

http://support.hpe.com/hpesc/public/docDisplay?docLocale=en_US&docId=hpesbcr04733en_us

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.