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CVE-2020-11080
CVE ID
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CVE-2020-11080
MITRE ATT&CK
Collection
Command and Control
Credential Access
Defense Evasion
Discovery
Execution
Exfiltration
Impact
Initial Access
Lateral Movement
Persistence
Privilege Escalation
Topic Tags
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
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
Additional Info
Technical Analysis
Report as Emergent Threat Response
Report as Exploited in the Wild
CVE ID
AttackerKB requires a CVE ID in order to pull vulnerability data and references from the CVE list and the National Vulnerability Database. If available, please supply below:
