Security Bulletin
This security bulletin contains one high risk vulnerability.
EUVDB-ID: #VU81728
Risk: High
CVSSv3.1: 5.1 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:H/RL:O/RC:C]
CVE-ID: CVE-2023-44487
CWE-ID:
CWE-400 - Resource exhaustion
Exploit availability: Yes
DescriptionThe 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.
Update the affected package nghttp2 to the latest version.
Vulnerable software versionsSUSE 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
External linkshttp://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.