| Name | CVE-2023-29409 |
| Description | Extremely large RSA keys in certificate chains can cause a client/server to expend significant CPU time verifying signatures. With fix, the size of RSA keys transmitted during handshakes is restricted to <= 8192 bits. Based on a survey of publicly trusted RSA keys, there are currently only three certificates in circulation with keys larger than this, and all three appear to be test certificates that are not actively deployed. It is possible there are larger keys in use in private PKIs, but we target the web PKI, so causing breakage here in the interests of increasing the default safety of users of crypto/tls seems reasonable. |
| 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 | 1.11.6-1+deb10u4 | vulnerable |
| buster (security) | 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) | 1.19.12-1 | | | |
| golang-1.20 | unknown | (unstable) | 1.20.7-1 | | | |
| 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://groups.google.com/g/golang-announce/c/X0b6CsSAaYI
[stretch] - golang-1.7 <postponed> (Limited support, follow buster DLAs)