SUSE update for apache2

1) HTTP response splitting

EUVDB-ID: #VU73107

Risk: Medium

CVSSv4.0: 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:P/U:Green]

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 12: SP4

SUSE Linux Enterprise Server 12 SP4 LTSS: 12-SP4

SUSE Linux Enterprise Server 12 SP4 ESPOS: 12-SP4

SUSE Linux Enterprise Server 12: SP2 - SP4

SUSE Linux Enterprise Server 12 SP2 BCL: 12-SP2

SUSE Linux Enterprise High Performance Computing 12: SP2 - SP4

SUSE OpenStack Cloud Crowbar: 9

SUSE OpenStack Cloud: 9

apache2-doc: before 2.4.23-29.97.1

apache2-worker-debuginfo: before 2.4.23-29.97.1

apache2-utils-debuginfo: before 2.4.23-29.97.1

apache2-utils: before 2.4.23-29.97.1

apache2: before 2.4.23-29.97.1

apache2-prefork-debuginfo: before 2.4.23-29.97.1

apache2-worker: before 2.4.23-29.97.1

apache2-debuginfo: before 2.4.23-29.97.1

apache2-prefork: before 2.4.23-29.97.1

apache2-debugsource: before 2.4.23-29.97.1

apache2-example-pages: before 2.4.23-29.97.1

CPE2.3

• cpe:2.3:o:suse:suse_linux_enterprise_server_for_sap_applications_12:SP4:*:*:*:*:*:*:*
• cpe:2.3:o:suse:suse_linux_enterprise_server_12_sp4_ltss:12-SP4:*:*:*:*:*:*:*
• cpe:2.3:o:suse:suse_linux_enterprise_server_12_sp4_espos:12-SP4:*:*:*:*:*:*:*
• cpe:2.3:o:suse:suse_linux_enterprise_server_12:SP2:*:*:*:*:*:*:*
• cpe:2.3:o:suse:suse_linux_enterprise_server_12:SP4:*:*:*:*:*:*:*
• cpe:2.3:o:suse:suse_linux_enterprise_server_12_sp2_bcl:12-SP2:*:*:*:*:*:*:*
• cpe:2.3:o:suse:suse_linux_enterprise_high_performance_computing_12:SP2:*:*:*:*:*:*:*
• cpe:2.3:o:suse:suse_linux_enterprise_high_performance_computing_12:SP4:*:*:*:*:*:*:*
• cpe:2.3:o:suse:suse_openstack_cloud_crowbar:9:*:*:*:*:*:*:*
• cpe:2.3:o:suse:suse_openstack_cloud:9:*:*:*:*:*:*:*
• cpe:2.3:a:suse:apache2-doc:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:a:suse:apache2-worker-debuginfo:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:a:suse:apache2-utils-debuginfo:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:a:suse:apache2-utils:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:a:suse:apache2:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:a:suse:apache2-prefork-debuginfo:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:a:suse:apache2-worker:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:a:suse:apache2-debuginfo:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:a:suse:apache2-prefork:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:a:suse:apache2-debugsource:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:a:suse:apache2-example-pages:*:*:*:*:*:suse_linux:*:*

External links

https://www.suse.com/support/update/announcement/2023/suse-su-20230803-1/

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.