openEuler 20.03 LTS SP3 update for rubygem-puma

1) Inconsistent interpretation of HTTP requests

EUVDB-ID: #VU63634

Risk: Medium

CVSSv3.1: 5.3 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-41136

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 requests. A remote attacker can send a specially crafted HTTP header values which contain the LF character to the server and smuggle arbitrary HTTP headers.

Successful exploitation of vulnerability may allow an attacker to poison HTTP cache and perform phishing attacks.

Mitigation

Install updates from vendor's repository.

Vulnerable software versions

openEuler: 20.03 LTS SP3

rubygem-puma-doc: before 3.12.6-3

rubygem-puma-debuginfo: before 3.12.6-3

rubygem-puma-debugsource: before 3.12.6-3

rubygem-puma: before 3.12.6-3

External links

http://www.openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2023-1982

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.