SUSE update for nghttp2

1) Resource exhaustion

EUVDB-ID: #VU81728

Risk: High

CVSSv4.0: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:A/U:Amber]

CVE-ID: CVE-2023-44487

CWE-ID: CWE-400 - Resource exhaustion

Exploit availability: Yes

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to improperly control of consumption for internal resources when handling HTTP/2 requests with compressed HEADERS frames. A remote attacker can send a sequence of compressed HEADERS frames followed by RST_STREAM frames and perform a denial of service (DoS) attack, a.k.a. "Rapid Reset".

Note, the vulnerability is being actively exploited in the wild.

Mitigation

Update the affected package nghttp2 to the latest version.

Vulnerable software versions

SUSE Linux Enterprise Software Development Kit 12: SP5

SUSE Linux Enterprise Server for SAP Applications 12: SP5

SUSE Linux Enterprise Server 12: SP5

SUSE Linux Enterprise High Performance Computing 12: SP5

libnghttp2-14-32bit: before 1.39.2-3.13.1

libnghttp2-14-debuginfo-32bit: before 1.39.2-3.13.1

libnghttp2-14-debuginfo: before 1.39.2-3.13.1

libnghttp2-14: before 1.39.2-3.13.1

nghttp2-debuginfo: before 1.39.2-3.13.1

nghttp2-debugsource: before 1.39.2-3.13.1

libnghttp2-devel: before 1.39.2-3.13.1

CPE2.3

• cpe:2.3:o:suse:suse_linux_enterprise_software_development_kit_12:SP5:*:*:*:*:*:*:*
• cpe:2.3:o:suse:suse_linux_enterprise_server_for_sap_applications_12:SP5:*:*:*:*:*:*:*
• cpe:2.3:o:suse:suse_linux_enterprise_server_12:SP5:*:*:*:*:*:*:*
• cpe:2.3:o:suse:suse_linux_enterprise_high_performance_computing_12:SP5:*:*:*:*:*:*:*
• cpe:2.3:a:suse:libnghttp2-14-32bit:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:a:suse:libnghttp2-14-debuginfo-32bit:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:a:suse:libnghttp2-14-debuginfo:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:a:suse:libnghttp2-14:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:a:suse:nghttp2-debuginfo:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:a:suse:nghttp2-debugsource:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:a:suse:libnghttp2-devel:*:*:*:*:*:suse_linux:*:*

External links

https://www.suse.com/support/update/announcement/2023/suse-su-20234199-1/

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?

Yes. This vulnerability is being exploited in the wild.