openEuler update for varnish

1) Reachable Assertion

EUVDB-ID: #VU20863

Risk: Low

CVSSv4.0: 0 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2019-15892

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 parsing HTTP/1 requests. A remote attacker can send specially crafted HTTP/1 requests to the affected server and trigger application restart, resulting in a denial of service (DoS) attack.

Mitigation

Install updates from vendor's repository.

Vulnerable software versions

openEuler: 20.03 LTS SP1 - 20.03 LTS

varnish-help: before 6.0.0-5

varnish-devel: before 6.0.0-5

varnish-debugsource: before 6.0.0-5

varnish-debuginfo: before 6.0.0-5

varnish: before 6.0.0-5

CPE2.3

• cpe:2.3:o:openeuler:openeuler:20.03:LTS SP1:*:*:*:*:*:*
• cpe:2.3:o:openeuler:openeuler:20.03:LTS:*:*:*:*:*:*
• cpe:2.3:a:openeuler:varnish-help:*:*:*:*:*:openeuler:*:*
• cpe:2.3:a:openeuler:varnish-devel:*:*:*:*:*:openeuler:*:*
• cpe:2.3:a:openeuler:varnish-debugsource:*:*:*:*:*:openeuler:*:*
• cpe:2.3:a:openeuler:varnish-debuginfo:*:*:*:*:*:openeuler:*:*
• cpe:2.3:a:openeuler:varnish:*:*:*:*:*:openeuler:*:*

External links

https://www.openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2021-1032

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.