Ecosyste.ms: Advisories

Security Advisories: GSA_kwCzR0hTQS1meGc1LXdxNngtdnI0d84AAw-p

golang.org/x/net/http2/h2c vulnerable to request smuggling attack

A request smuggling attack is possible when using MaxBytesHandler. When using MaxBytesHandler, the body of an HTTP request is not fully consumed. When the server attempts to read HTTP2 frames from the connection, it will instead be reading the body of the HTTP request, which could be attacker-manipulated to represent arbitrary HTTP2 requests.

Specific Go Packages Affected

golang.org/x/net/http2/h2c

Permalink: https://github.com/advisories/GHSA-fxg5-wq6x-vr4w
JSON: https://advisories.ecosyste.ms/api/v1/advisories/GSA_kwCzR0hTQS1meGc1LXdxNngtdnI0d84AAw-p
Source: GitHub Advisory Database
Origin: Unspecified
Severity: High
Classification: General
Published: over 1 year ago
Updated: 7 months ago

CVSS Score: 7.5
CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Identifiers: GHSA-fxg5-wq6x-vr4w, CVE-2022-41721
References:

• https://nvd.nist.gov/vuln/detail/CVE-2022-41721
• https://go.dev/cl/447396
• https://go.dev/issue/56352
• https://pkg.go.dev/vuln/GO-2023-1495
• https://lists.fedoraproject.org/archives/list/[email protected]/message/X3H3EWQXM2XL5AGBX6UL443JEJ3GQXJN/
• https://github.com/advisories/GHSA-fxg5-wq6x-vr4w

Blast Radius: 40.8

Affected Packages