SUSE update for nghttp2

1) Resource exhaustion

EUVDB-ID: #VU28538

Risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-11080

CWE-ID: CWE-400 - Resource exhaustion

Exploit availability: No

Description

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

The vulnerability exists due to application does not properly control consumption of internal resources when processing HTTP/2 SETTINGS frames. A remote attacker can trigger high CPU load by sending large HTTP/2 SETTINGS frames and perform a denial of service (DoS) attack.

Mitigation

Update the affected package nghttp2 to the latest version.

Vulnerable software versions

SUSE Linux Enterprise Server for SAP: 15-SP1 - 15-SP3

SUSE Manager Proxy: 4.0

SUSE Manager Retail Branch Server: 4.0

SUSE Manager Server: 4.0

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

SUSE Enterprise Storage: 6

SUSE CaaS Platform: 4.0

SUSE Linux Enterprise Server: 15-LTSS - 15-SP1-LTSS

libnghttp2-14-32bit-debuginfo: before 1.40.0-3.11.1

libnghttp2-14-32bit: before 1.40.0-3.11.1

nghttp2-debugsource: before 1.40.0-3.11.1

nghttp2-debuginfo: before 1.40.0-3.11.1

libnghttp2_asio1-debuginfo: before 1.40.0-3.11.1

libnghttp2_asio1: before 1.40.0-3.11.1

libnghttp2_asio-devel: before 1.40.0-3.11.1

libnghttp2-devel: before 1.40.0-3.11.1

libnghttp2-14-debuginfo: before 1.40.0-3.11.1

libnghttp2-14: before 1.40.0-3.11.1

External links

http://www.suse.com/support/update/announcement/2021/suse-su-20210931-1/

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.