Vulnerability · Published Nov 14, 2023 · Assigned by mitre
CVE-2023-46445
Medium 5.9
In plain English
A medium-severity insufficient verification of data authenticity in the python-asyncssh package (Debian). Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.6% (higher than 48% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)5.9Medium
Exploit odds (30 days)0.6%top 51.8% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official description
An issue in AsyncSSH before 2.14.1 allows attackers to control the extension info message (RFC 8308) via a man-in-the-middle attack, aka a "Rogue Extension Negotiation."
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | python-asyncssh | 2.10.1-2+deb12u2 | DEBIAN-CVE-2023-46445 |
| Debian:13 | python-asyncssh | 2.15.0-1 | DEBIAN-CVE-2023-46445 |
| Debian:14 | python-asyncssh | 2.15.0-1 | DEBIAN-CVE-2023-46445 |
| PyPI | asyncssh | 2.14.1 | GHSA-cfc2-wr2v-gxm5 |
| PyPI | asyncssh | 2.14.1 | PYSEC-2023-237 |
| Ubuntu:22.04:LTS | python-asyncssh | 2.5.0-1ubuntu0.1 | USN-7108-1 |
| Ubuntu:22.04:LTS | python-asyncssh | 2.5.0-1ubuntu0.1 | UBUNTU-CVE-2023-46445 |
Affected products (as reported)
Weakness: CWE-345 · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
References
- https://github.com/ronf/asyncssh/security/advisories/GHSA-cfc2-wr2v-gxm5
- FEDORA-2023-d2956318e4 vendor-advisory
- https://www.terrapin-attack.com
- https://github.com/ronf/asyncssh/blob/develop/docs/changes.rst
- https://github.com/advisories/GHSA-cfc2-wr2v-gxm5
- http://packetstormsecurity.com/files/176280/Terrapin-SSH-Connection-Weakening.html
- https://security.netapp.com/advisory/ntap-20231222-0001/
- https://lists.debian.org/debian-lts-announce/2024/09/msg00042.html