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 Micro: 5.1 - 5.5

openSUSE Leap Micro: 5.3 - 5.4

Basesystem Module: 15-SP4 - 15-SP5

SUSE Linux Enterprise Micro for Rancher: 5.2 - 5.4

SUSE Linux Enterprise Server for SAP Applications 15: SP2 - SP5

SUSE Linux Enterprise Server 15: SP2 - SP5

SUSE Linux Enterprise Real Time 15: SP4 - SP5

SUSE Linux Enterprise High Performance Computing 15: SP2 - SP5

SUSE Linux Enterprise Desktop 15: SP4 - SP5

SUSE Linux Enterprise Server 15 SP3 LTSS: 15-SP3

SUSE Linux Enterprise Server 15 SP2 LTSS: 15-SP2

SUSE Linux Enterprise High Performance Computing LTSS 15: SP3

SUSE Linux Enterprise High Performance Computing ESPOS 15: SP3

SUSE Linux Enterprise High Performance Computing 15 SP2 LTSS: 15-SP2

openSUSE Leap: 15.4 - 15.5

SUSE Enterprise Storage: 7.1

SUSE Manager Retail Branch Server: 4.2 - 4.3

SUSE Manager Server: 4.2 - 4.3

SUSE Manager Proxy: 4.2 - 4.3

libnghttp2-14-32bit: before 1.40.0-150200.12.1

libnghttp2_asio1-32bit-debuginfo: before 1.40.0-150200.12.1

libnghttp2-14-32bit-debuginfo: before 1.40.0-150200.12.1

libnghttp2_asio1-32bit: before 1.40.0-150200.12.1

nghttp2: before 1.40.0-150200.12.1

libnghttp2-devel: before 1.40.0-150200.12.1

python3-nghttp2-debuginfo: before 1.40.0-150200.12.1

python3-nghttp2: before 1.40.0-150200.12.1

libnghttp2_asio1: before 1.40.0-150200.12.1

nghttp2-python-debugsource: before 1.40.0-150200.12.1

libnghttp2_asio-devel: before 1.40.0-150200.12.1

libnghttp2_asio1-debuginfo: before 1.40.0-150200.12.1

nghttp2-debuginfo: before 1.40.0-150200.12.1

nghttp2-debugsource: before 1.40.0-150200.12.1

libnghttp2-14-debuginfo: before 1.40.0-150200.12.1

libnghttp2-14: before 1.40.0-150200.12.1

CPE2.3

• cpe:2.3:o:suse:suse_linux_enterprise_micro:5.1:*:*:*:*:*:*:*
• cpe:2.3:o:suse:suse_linux_enterprise_micro:5.2:*:*:*:*:*:*:*
• cpe:2.3:o:suse:suse_linux_enterprise_micro:5.3:*:*:*:*:*:*:*
• cpe:2.3:o:suse:opensuse_leap_micro:5.3:*:*:*:*:*:*:*
• cpe:2.3:o:suse:opensuse_leap_micro:5.4:*:*:*:*:*:*:*
• cpe:2.3:o:suse:basesystem_module:15-SP4:*:*:*:*:*:*:*
• cpe:2.3:o:suse:basesystem_module:15-SP5:*:*:*:*:*:*:*
• cpe:2.3:o:suse:suse_linux_enterprise_micro_for_rancher:5.2:*:*:*:*:*:*:*
• cpe:2.3:o:suse:suse_linux_enterprise_micro_for_rancher:5.3:*:*:*:*:*:*:*
• cpe:2.3:o:suse:suse_linux_enterprise_micro_for_rancher:5.4:*:*:*:*:*:*:*
• cpe:2.3:o:suse:suse_linux_enterprise_server_for_sap_applications_15:SP2:*:*:*:*:*:*:*
• cpe:2.3:o:suse:suse_linux_enterprise_server_15:SP2:*:*:*:*:*:*:*
• cpe:2.3:o:suse:suse_linux_enterprise_real_time_15:SP4:*:*:*:*:*:*:*
• cpe:2.3:o:suse:suse_linux_enterprise_high_performance_computing_15:SP2:*:*:*:*:*:*:*
• cpe:2.3:o:suse:suse_linux_enterprise_desktop_15:SP4:*:*:*:*:*:*:*
• cpe:2.3:o:suse:suse_linux_enterprise_server_15_sp3_ltss:15-SP3:*:*:*:*:*:*:*
• cpe:2.3:o:suse:suse_linux_enterprise_server_15_sp2_ltss:15-SP2:*:*:*:*:*:*:*
• cpe:2.3:o:suse:suse_linux_enterprise_high_performance_computing_ltss_15:SP3:*:*:*:*:*:*:*
• cpe:2.3:o:suse:suse_linux_enterprise_high_performance_computing_espos_15:SP3:*:*:*:*:*:*:*
• cpe:2.3:o:suse:suse_linux_enterprise_high_performance_computing_15_sp2_ltss:15-SP2:*:*:*:*:*:*:*
• cpe:2.3:o:suse:opensuse_leap:15.4:*:*:*:*:*:*:*
• cpe:2.3:o:suse:suse_enterprise_storage:7.1:*:*:*:*:*:*:*
• cpe:2.3:o:suse:suse_manager_retail_branch_server:4.2:*:*:*:*:*:*:*
• cpe:2.3:o:suse:suse_manager_server:4.2:*:*:*:*:*:*:*
• cpe:2.3:o:suse:suse_manager_proxy:4.2:*:*:*:*:*:*:*
• cpe:2.3:a:suse:libnghttp2-14-32bit:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:a:suse:libnghttp2_asio1-32bit-debuginfo:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:a:suse:libnghttp2-14-32bit-debuginfo:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:a:suse:libnghttp2_asio1-32bit:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:a:suse:nghttp2:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:a:suse:libnghttp2-devel:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:a:suse:python3-nghttp2-debuginfo:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:a:suse:python3-nghttp2:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:a:suse:libnghttp2_asio1:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:a:suse:nghttp2-python-debugsource:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:a:suse:libnghttp2_asio-devel:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:a:suse:libnghttp2_asio1-debuginfo:*:*:*:*:*: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:libnghttp2-14-debuginfo:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:a:suse:libnghttp2-14:*:*:*:*:*:suse_linux:*:*

External links

https://www.suse.com/support/update/announcement/2023/suse-su-20234200-1/

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.