Arch Linux update for varnish



Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2021-36740
CWE-ID CWE-444
Exploitation vector Network
Public exploit N/A
Vulnerable software
 Arch Linux
Operating systems & Components / Operating system

varnish
Operating systems & Components / Operating system package or component

Vendor Arch Linux

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) Inconsistent interpretation of HTTP requests

EUVDB-ID: #VU55501

Risk: Medium

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2021-36740

CWE-ID: CWE-444 - Inconsistent Interpretation of HTTP Requests ('HTTP Request Smuggling')

Exploit availability: No

Description

The vulnerability allows a remote attacker to preform HTTP request smuggling attacks.

The vulnerability exists due to improper validation of HTTP/2 requests. A remote attacker can send a specially crafted HTTP/2 POST request with a large Content-Length header to the server and smuggle arbitrary HTTP headers.

Successful exploitation of vulnerability may allow an attacker to poison HTTP cache or bypass VCL authorization.

Mitigation

Update the affected package varnish to version 6.6.1-1.

Vulnerable software versions

Arch Linux: All versions

varnish: before 6.6.1-1

CPE2.3 External links

https://security.archlinux.org/advisory/ASA-202107-28


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.



###SIDEBAR###