ronf/asyncssh · Security
AsyncSSH SSH Server Authentication Bypass
- GHSA ID
- GHSA-97cv-6pjf-5f9q
- CVE ID
- CVE-2018-7749
- Severity
- critical
- Published
- Updated
- CVSS
- 9.8 · CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- CVSS v3
- 9.8 · CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- CVSS v4
- 9.3 · CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Description
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.
CWEs
- CWE-287 · Improper Authentication
References
- https://nvd.nist.gov/vuln/detail/CVE-2018-7749 ↗
- https://github.com/ronf/asyncssh/commit/c161e26cdc0d41b745b63d9f17b437f073bf7ba4 ↗
- https://groups.google.com/forum/#!msg/asyncssh-announce/57_5O7kiHSA/8BXZ_hxHAQAJ ↗
- https://github.com/ronf/asyncssh/commit/16e6ebfa893167c7d9d3f6dc7a2c0d197e47f43a ↗
- https://github.com/pypa/advisory-database/tree/main/vulns/asyncssh/PYSEC-2018-108.yaml ↗
- https://github.com/advisories/GHSA-97cv-6pjf-5f9q ↗