CVE-2023-46445
MEDIUM5.3EPSS 0.45%python-asyncssh - security update
Published: 11/9/2023Modified: 4/28/2026
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 (4)
- Debian/python-asyncsshfrom 0, < 2.5.0-0.1+deb11u1
- Debian/python-asyncsshfrom 0, < 2.5.0-0.1+deb11u1
- PyPI/asyncsshfrom 0, < 2.14.1
- PyPI/asyncsshfrom 0, < 2.14.1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM5.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N |
References (13)
- ADVISORYhttps://github.com/advisories/GHSA-cfc2-wr2v-gxm5
- ADVISORYhttps://nvd.nist.gov/vuln/detail/CVE-2023-46445
- ADVISORYhttps://security-tracker.debian.org/tracker/CVE-2023-46445
- PATCHhttps://github.com/ronf/asyncssh
- WEBhttp://packetstormsecurity.com/files/176280/Terrapin-SSH-Connection-Weakening.html
- WEBhttps://github.com/pypa/advisory-database/tree/main/vulns/asyncssh/PYSEC-2023-237.yaml
- WEBhttps://github.com/ronf/asyncssh/blob/develop/docs/changes.rst
- WEBhttps://github.com/ronf/asyncssh/commit/83e43f5ea3470a8617fc388c72b062c7136efd7e
- WEBhttps://github.com/ronf/asyncssh/security/advisories/GHSA-cfc2-wr2v-gxm5
- WEBhttps://lists.debian.org/debian-lts-announce/2024/09/msg00042.html
- WEBhttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ME34ROZWMDK5KLMZKTSA422XVJZ7IMTE
- WEBhttps://security.netapp.com/advisory/ntap-20231222-0001
- WEBhttps://www.terrapin-attack.com