| Name | CVE-2025-46712 |
| Description | Erlang/OTP is a set of libraries for the Erlang programming language. In versions prior to OTP-27.3.4 (for OTP-27), OTP-26.2.5.12 (for OTP-26), and OTP-25.3.2.21 (for OTP-25), Erlang/OTP SSH fails to enforce strict KEX handshake hardening measures by allowing optional messages to be exchanged. This allows a Man-in-the-Middle attacker to inject these messages in a connection during the handshake. This issue has been patched in versions OTP-27.3.4 (for OTP-27), OTP-26.2.5.12 (for OTP-26), and OTP-25.3.2.21 (for OTP-25). |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| Debian Bugs | 1104963 |
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| erlang (PTS) | bullseye | 1:23.2.6+dfsg-1+deb11u1 | vulnerable |
| bullseye (security) | 1:23.2.6+dfsg-1+deb11u2 | vulnerable | |
| bookworm, bookworm (security) | 1:25.2.3+dfsg-1+deb12u1 | vulnerable | |
| trixie | 1:27.3.3+dfsg-1 | vulnerable | |
| sid | 1:27.3.4+dfsg-1 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| erlang | source | (unstable) | 1:27.3.4+dfsg-1 | 1104963 |
[bookworm] - erlang <no-dsa> (Minor issue)
[bullseye] - erlang <postponed> (Minor issue, "no immediate security impact")
https://github.com/erlang/otp/security/advisories/GHSA-934x-xq38-hhqf
https://github.com/erlang/otp/commit/e4b56a9f4a511aa9990dd86c16c61439c828df83 (OTP-25.3.2.21)
https://github.com/erlang/otp/commit/816b5f70196486e693dd0a3ce59f9dde7ba558db (OTP-25.3.2.21)
https://github.com/erlang/otp/commit/bfe386901854d9c72eda7146615eb5dfca346ccf (OTP-26.2.5.12)
https://github.com/erlang/otp/commit/c0f7a86713c6eed455f3d483c7111e86c44668e5 (OTP-26.2.5.12)
https://github.com/erlang/otp/commit/558c52c8e334ce61ee2ab76379f3856470531b90 (OTP-27.3.4)
https://github.com/erlang/otp/commit/dc2223c53a1bcea8cc4760bb3d44112215f44f35 (OTP-27.3.4)