Attacker Value
Unknown
Some HTTP/2 implementations are vulnerable to a header leak, potentially leading to a denial of service
Some HTTP/2 implementations are vulnerable to a header leak, potentially leading to a denial of service
(Last updated January 15, 2025) ▾
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Description
Some HTTP/2 implementations are vulnerable to a header leak, potentially leading to a denial of service. The attacker sends a stream of headers with a 0-length header name and 0-length header value, optionally Huffman encoded into 1-byte or greater headers. Some implementations allocate memory for these headers and keep the allocation alive until the session dies. This can consume excess memory.
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CVSS V3 Severity and Metrics
Data provided by the National Vulnerability Database (NVD)
Base Score:
6.5 Medium
Impact Score:
3.6
Exploitability Score:
2.8
Attack Vector (AV):
Network
Attack Complexity (AC):
Low
Privileges Required (PR):
Low
User Interaction (UI):
None
Scope (S):
Unchanged
Confidentiality (C):
None
Integrity (I):
None
Availability (A):
High
General Information
Vendors
Products
- debian linux 10.0,
- debian linux 9.0,
- diskstation manager 6.2,
- enterprise linux 8.0,
- fedora 29,
- fedora 30,
- fedora 32,
- graalvm 19.2.0,
- jboss core services 1.0,
- jboss enterprise application platform 7.2.0,
- jboss enterprise application platform 7.3.0,
- leap 15.0,
- leap 15.1,
- nginx,
- node.js,
- openshift service mesh 1.0,
- quay 3.0.0,
- skynas -,
- software collections 1.0,
- swiftnio,
- traffic server,
- ubuntu linux 16.04,
- ubuntu linux 18.04,
- ubuntu linux 19.04,
- vs960hd firmware -,
- web gateway
References
Advisory
