Improper Authentication Affecting python-asyncssh package, versions <1.12.1-1
Threat Intelligence
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Start learning- Snyk IDSNYK-DEBIAN10-PYTHONASYNCSSH-269245
- published12 Mar 2018
- disclosed12 Mar 2018
Introduced: 12 Mar 2018
CVE-2018-7749 (opens in a new tab)How to fix?
Upgrade Debian:10 python-asyncssh to version 1.12.1-1 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream python-asyncssh package and not the python-asyncssh package as distributed by Debian.
See How to fix? for Debian:10 relevant fixed versions and status.
The SSH server implementation of AsyncSSH before 1.12.1 does not properly check whether authentication is completed before processing other requests. A customized SSH client can simply skip the authentication step.
References
- https://security-tracker.debian.org/tracker/CVE-2018-7749
- https://github.com/ronf/asyncssh/commit/c161e26cdc0d41b745b63d9f17b437f073bf7ba4
- https://groups.google.com/forum/#%21msg/asyncssh-announce/57_5O7kiHSA/8BXZ_hxHAQAJ
- https://groups.google.com/forum/#!msg/asyncssh-announce/57_5O7kiHSA/8BXZ_hxHAQAJ
- http://people.ubuntu.com/~ubuntu-security/cve/CVE-2018-7749