SUSE update for apache2

Published: 2023-03-17 | Updated: 2023-06-26

Risk	Medium
Patch available	YES
Number of vulnerabilities	2
CVE-ID	CVE-2023-25690 CVE-2023-27522
CWE-ID	CWE-113
Exploitation vector	Network
Public exploit	Public exploit code for vulnerability #1 is available.
Vulnerable software Subscribe	SUSE Linux Enterprise Server for SAP Applications 15 Operating systems & Components / Operating system SUSE Linux Enterprise Server 15 SP1 LTSS Operating systems & Components / Operating system SUSE Linux Enterprise Server 15 Operating systems & Components / Operating system SUSE Linux Enterprise High Performance Computing 15 SP1 LTSS Operating systems & Components / Operating system SUSE Linux Enterprise High Performance Computing 15 Operating systems & Components / Operating system SUSE CaaS Platform Operating systems & Components / Operating system apache2-doc Operating systems & Components / Operating system package or component apache2-utils-debuginfo Operating systems & Components / Operating system package or component apache2-worker-debuginfo Operating systems & Components / Operating system package or component apache2-debugsource Operating systems & Components / Operating system package or component apache2-worker Operating systems & Components / Operating system package or component apache2-utils Operating systems & Components / Operating system package or component apache2-devel Operating systems & Components / Operating system package or component apache2-prefork Operating systems & Components / Operating system package or component apache2 Operating systems & Components / Operating system package or component apache2-prefork-debuginfo Operating systems & Components / Operating system package or component apache2-debuginfo Operating systems & Components / Operating system package or component
Vendor	SUSE

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) HTTP response splitting

EUVDB-ID: #VU73107

Risk: Medium

CVSSv3.1: 5.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N/E:P/RL:O/RC:C]

CVE-ID: CVE-2023-25690

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

Exploit availability: Yes

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_rewrite and mod_proxy. 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

Update the affected package apache2 to the latest version.

Vulnerable software versions

SUSE Linux Enterprise Server for SAP Applications 15: SP1

SUSE Linux Enterprise Server 15 SP1 LTSS: 15-SP1

SUSE Linux Enterprise Server 15: SP1

SUSE Linux Enterprise High Performance Computing 15 SP1 LTSS: 15-SP1

SUSE Linux Enterprise High Performance Computing 15: SP1

SUSE CaaS Platform: 4.0

apache2-doc: before 2.4.33-150000.3.75.1

apache2-utils-debuginfo: before 2.4.33-150000.3.75.1

apache2-worker-debuginfo: before 2.4.33-150000.3.75.1

apache2-debugsource: before 2.4.33-150000.3.75.1

apache2-worker: before 2.4.33-150000.3.75.1

apache2-utils: before 2.4.33-150000.3.75.1

apache2-devel: before 2.4.33-150000.3.75.1

apache2-prefork: before 2.4.33-150000.3.75.1

apache2: before 2.4.33-150000.3.75.1

apache2-prefork-debuginfo: before 2.4.33-150000.3.75.1

apache2-debuginfo: before 2.4.33-150000.3.75.1

External links

http://www.suse.com/support/update/announcement/2023/suse-su-20230799-1/

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. However, proof of concept for this vulnerability is available.

2) HTTP response splitting

EUVDB-ID: #VU73106