Description
HTTP and MIME header parsing can allocate large amounts of memory, even when parsing small inputs, potentially leading to a denial of service. Certain unusual patterns of input data can cause the common function used to parse HTTP and MIME headers to allocate substantially more memory than required to hold the parsed headers. An attacker can exploit this behavior to cause an HTTP server to allocate large amounts of memory from a small request, potentially leading to memory exhaustion and a denial of service. With fix, header parsing now correctly allocates only the memory required to hold parsed headers.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HWeakness enumeration
Affected software
| Vendor | Product | Versions |
|---|---|---|
| Go standard library | net/textproto | < 1.19.8; >= 1.20.0-0, < 1.20.3 |
References
- https://go.dev/cl/481994Patch, Vendor Advisory
- https://go.dev/issue/58975Issue Tracking, Vendor Advisory
- https://groups.google.com/g/golang-announce/c/Xdv6JL9ENs8Mailing List, Patch
- https://pkg.go.dev/vuln/GO-2023-1704Vendor Advisory
- https://security.gentoo.org/glsa/202311-09
- https://security.netapp.com/advisory/ntap-20230526-0007/
- https://go.dev/cl/481994Patch, Vendor Advisory
- https://go.dev/issue/58975Issue Tracking, Vendor Advisory
- https://groups.google.com/g/golang-announce/c/Xdv6JL9ENs8Mailing List, Patch
- https://pkg.go.dev/vuln/GO-2023-1704Vendor Advisory
- https://security.gentoo.org/glsa/202311-09
- https://security.netapp.com/advisory/ntap-20230526-0007/
Timeline
- Published
- Apr 6, 2023
- Last modified
- Jun 17, 2026
- NVD status
- Modified