Security Bulletin
This security bulletin contains one medium risk vulnerability.
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
DescriptionThe 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.
MitigationUpdate the affected package apache2 to the latest version.
Vulnerable software versionsSUSE 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
External linkshttp://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.