| Name | CVE-2023-39326 |
| Description | A malicious HTTP sender can use chunk extensions to cause a receiver reading from a request or response body to read many more bytes from the network than are in the body. A malicious HTTP client can further exploit this to cause a server to automatically read a large amount of data (up to about 1GiB) when a handler fails to read the entire body of a request. Chunk extensions are a little-used HTTP feature which permit including additional metadata in a request or response body sent using the chunked encoding. The net/http chunked encoding reader discards this metadata. A sender can exploit this by inserting a large metadata segment with each byte transferred. The chunk reader now produces an error if the ratio of real body to encoded bytes grows too small. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| golang-1.11 (PTS) | buster (security), buster, buster (lts) | 1.11.6-1+deb10u7 | vulnerable |
| golang-1.15 (PTS) | bullseye | 1.15.15-1~deb11u4 | vulnerable |
| golang-1.19 (PTS) | bookworm | 1.19.8-2 | vulnerable |
| golang-1.7 (PTS) | stretch (security), stretch (lts), stretch | 1.7.4-2+deb9u5 | vulnerable |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|
| golang-1.11 | source | (unstable) | (unfixed) | | | |
| golang-1.15 | source | (unstable) | (unfixed) | | | |
| golang-1.19 | source | (unstable) | (unfixed) | | | |
| golang-1.20 | source | (unstable) | 1.20.12-1 | | | |
| golang-1.21 | unknown | (unstable) | 1.21.5-1 | | | |
| golang-1.7 | source | (unstable) | (unfixed) | | | |
Notes
[bookworm] - golang-1.19 <no-dsa> (Minor issue)
[bullseye] - golang-1.15 <no-dsa> (Minor issue)
[buster] - golang-1.11 <postponed> (Limited support, minor issue, follow bullseye DSAs/point-releases)
https://go.dev/issue/64433
https://github.com/golang/go/commit/ec8c526e4be720e94b98ca509e6364f0efaf28f7 (go1.21.5)
https://github.com/golang/go/commit/6446af942e2e2b161c4ec1b60d9703a2b55dc4dd (go1.20.12)
[stretch] - golang-1.7 <postponed> (Limited support, follow DLAs)