Attacker Value
Unknown
CVE-2020-11080
CVE-2020-11080
(Last updated October 17, 2023) ▾
MITRE ATT&CK
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Description
In nghttp2 before version 1.41.0, the overly large HTTP/2 SETTINGS frame payload causes denial of service. The proof of concept attack involves a malicious client constructing a SETTINGS frame with a length of 14,400 bytes (2400 individual settings entries) over and over again. The attack causes the CPU to spike at 100%. nghttp2 v1.41.0 fixes this vulnerability. There is a workaround to this vulnerability. Implement nghttp2_on_frame_recv_callback callback, and if received frame is SETTINGS frame and the number of settings entries are large (e.g., > 32), then drop the connection.
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CVSS V3 Severity and Metrics
Data provided by the National Vulnerability Database (NVD)
Base Score:
7.5 High
Impact Score:
3.6
Exploitability Score:
3.9
Attack Vector (AV):
Network
Attack Complexity (AC):
Low
Privileges Required (PR):
None
User Interaction (UI):
None
Scope (S):
Unchanged
Confidentiality (C):
None
Integrity (I):
None
Availability (A):
High
General Information
Vendors
- debian,
- fedoraproject,
- nghttp2,
- nodejs,
- opensuse,
- oracle
Products
- banking extensibility workbench 14.3.0,
- banking extensibility workbench 14.4.0,
- blockchain platform,
- debian linux 10.0,
- debian linux 9.0,
- enterprise communications broker 3.1.0,
- enterprise communications broker 3.2.0,
- fedora 31,
- fedora 33,
- graalvm 19.3.2,
- graalvm 20.1.0,
- leap 15.1,
- mysql,
- nghttp2,
- node.js
References
Advisory
Miscellaneous
