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golang.org/x/net/http2 vulnerable to possible excessive memory growth

Moderate severity GitHub Reviewed Published Dec 8, 2022 to the GitHub Advisory Database • Updated May 20, 2024

Package

gomod golang.org/x/net (Go)

Affected versions

< 0.4.0

Patched versions

0.4.0
gomod golang.org/x/net/http2 (Go)
< 0.4.0
0.4.0

Description

An attacker can cause excessive memory growth in a Go server accepting HTTP/2 requests. HTTP/2 server connections contain a cache of HTTP header keys sent by the client. While the total number of entries in this cache is capped, an attacker sending very large keys can cause the server to allocate approximately 64 MiB per open connection.

References

Published by the National Vulnerability Database Dec 8, 2022
Published to the GitHub Advisory Database Dec 8, 2022
Reviewed Jan 18, 2023
Last updated May 20, 2024

Severity

Moderate

CVSS overall score

This score calculates overall vulnerability severity from 0 to 10 and is based on the Common Vulnerability Scoring System (CVSS).
/ 10

CVSS v3 base metrics

Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
Low

CVSS v3 base metrics

Attack vector: More severe the more the remote (logically and physically) an attacker can be in order to exploit the vulnerability.
Attack complexity: More severe for the least complex attacks.
Privileges required: More severe if no privileges are required.
User interaction: More severe when no user interaction is required.
Scope: More severe when a scope change occurs, e.g. one vulnerable component impacts resources in components beyond its security scope.
Confidentiality: More severe when loss of data confidentiality is highest, measuring the level of data access available to an unauthorized user.
Integrity: More severe when loss of data integrity is the highest, measuring the consequence of data modification possible by an unauthorized user.
Availability: More severe when the loss of impacted component availability is highest.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

EPSS score

0.361%
(72nd percentile)

Weaknesses

CVE ID

CVE-2022-41717

GHSA ID

GHSA-xrjj-mj9h-534m

Source code

Credits

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