Anolis OS update for httpd:2.4 module

Published: 2023-05-12 | Updated: 2025-03-28

Risk	Medium
Patch available	YES
Number of vulnerabilities	2
CVE-ID	CVE-2023-27522 CVE-2006-20001
CWE-ID	CWE-113 CWE-119
Exploitation vector	Network
Public exploit	N/A
Vulnerable software	Anolis OS Operating systems & Components / Operating system httpd-manual Operating systems & Components / Operating system package or component httpd-filesystem Operating systems & Components / Operating system package or component mod_ssl Operating systems & Components / Operating system package or component mod_session Operating systems & Components / Operating system package or component mod_proxy_html Operating systems & Components / Operating system package or component mod_ldap Operating systems & Components / Operating system package or component httpd-tools Operating systems & Components / Operating system package or component httpd-devel Operating systems & Components / Operating system package or component httpd Operating systems & Components / Operating system package or component mod_http2 Operating systems & Components / Operating system package or component mod_md Operating systems & Components / Operating system package or component
Vendor	OpenAnolis

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) HTTP response splitting

EUVDB-ID: #VU73106

Risk: Medium

CVSSv4.0: 1.2 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2023-27522

CWE-ID: CWE-113 - Improper Neutralization of CRLF Sequences in HTTP Headers ('HTTP Response Splitting')

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform HTTP splitting attacks.

The vulnerability exists due to software does not correclty process CRLF character sequences in mod_proxy_uwsgi. A remote attacker can send specially crafted request containing CRLF sequence and make the application to send a split HTTP response.

Successful exploitation of the vulnerability may allow an attacker perform cache poisoning attack.

Mitigation

Install updates from vendor's repository.

Vulnerable software versions

Anolis OS: 8

httpd-manual: before 2.4.37-51.0.2

httpd-filesystem: before 2.4.37-51.0.2

mod_ssl: before 2.4.37-51.0.2

mod_session: before 2.4.37-51.0.2

mod_proxy_html: before 2.4.37-51.0.2

mod_ldap: before 2.4.37-51.0.2

httpd-tools: before 2.4.37-51.0.2

httpd-devel: before 2.4.37-51.0.2

httpd: before 2.4.37-51.0.2

mod_http2: before 1.15.7-5

mod_md: before 2.0.8-8

CPE2.3

External links

https://anas.openanolis.cn/errata/detail/ANSA-2023:0148

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.

2) Buffer overflow

EUVDB-ID: #VU71241