openEuler 22.03 LTS update for varnish

1) Reachable Assertion

EUVDB-ID: #VU66219

Risk: Medium

CVSSv3.1: 5.2 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-38150

CWE-ID: CWE-617 - Reachable Assertion

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a reachable assertion when processing HTTP/1 responses from configured backends. A remote attacker with ability to influence server response can pass specially crafted reason phrase of the backend response status line and perform a denial of service (DoS) attack.

Mitigation

Install updates from vendor's repository.

Vulnerable software versions

openEuler: 22.03 LTS

varnish-help: before 7.0.1-6

varnish-debugsource: before 7.0.1-6

varnish-devel: before 7.0.1-6

varnish-debuginfo: before 7.0.1-6

varnish: before 7.0.1-6

External links

http://www.openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2022-1854

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.