9.8crit
CVE-2018-7749
AsyncSSH SSH Server Authentication Bypass
Also known as GHSA-97cv-6pjf-5f9q, PYSEC-2018-108
Published 8 y ago · modified 4 mo ago · JSON
CVSS
9.8
v3.0 · NVD
CISA KEV
No
not known exploited
EPSS
1.8%
percentile 78%
Public exploits
0
none known
Summary
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.
Exploit prediction (EPSS)
1.78% probability of exploitation in the next 30 days, higher than 78% of all scored CVEs.
CVSS scores
| Assigned by | Version | Score | Vector |
|---|---|---|---|
| NVD | 3.0 | 9.8 | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| NVD | 2.0 | 7.5 | AV:N/AC:L/Au:N/C:P/I:P/A:P |
| GitHub | 3.1 | 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| pypi | asyncssh | <1.12.1 | 1.12.1 |
Classification
- Weakness
- CWE-287 Improper Authentication
References
- groups.google.com /forum/#%21msg/asyncssh-announce/57_5O7kiHSA/8BXZ_hxHAQAJ · mailing-list, x_refsource_MLIST, x_transferred
- github.com /ronf/asyncssh/commit/c161e26cdc0d41b745b63d9f17b437f073bf7ba4 · x_refsource_CONFIRM, x_transferred
- nvd.nist.gov /vuln/detail/CVE-2018-7749 · advisory
- github.com /ronf/asyncssh/commit/16e6ebfa893167c7d9d3f6dc7a2c0d197e47f43a · web
- github.com /pypa/advisory-database/tree/main/vulns/asyncssh/PYSEC-2018-108.yaml · web
- github.com /ronf/asyncssh · package
- groups.google.com /forum/#!msg/asyncssh-announce/57_5O7kiHSA/8BXZ_hxHAQAJ · web
- github.com /advisories/GHSA-97cv-6pjf-5f9q · advisory
Sources
- CVE List: CVE-2018-7749
- GitHub Advisory: GHSA-97cv-6pjf-5f9q
- NVD: CVE-2018-7749
- OSV: PYSEC-2018-108
vulnwire keeps one entry per vulnerability: the CVE id wins, then GHSA; records that alias each other are merged. Machine-readable: JSON.