CVE-2018-7750 EXPLOIT
9.8
CRITICAL · CVSS 3.1 · EPSS 27.1% (pctl 98)
Patch early
A public exploit exists.
Description
transport.py in the SSH server implementation of Paramiko before 1.17.6, 1.18.x before 1.18.5, 2.0.x before 2.0.8, 2.1.x before 2.1.5, 2.2.x before 2.2.3, 2.3.x before 2.3.2, and 2.4.x before 2.4.1 does not properly check whether authentication is completed before processing other requests, as demonstrated by channel-open. A customized SSH client can simply skip the authentication step.
Scoring
| CVSS | 9.8 (CRITICAL, v3.1) |
|---|---|
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| EPSS | 27.11% — more likely to be exploited than 98% of all CVEs |
| Weakness | CWE-287 |
| On CISA KEV | no |
| Public exploit | yes |
| Published | 2018-03-13 |
| Last modified | 2026-06-17 |
Affected (11)
| Vendor | Product |
|---|---|
| debian | debian linux |
| paramiko | paramiko |
| redhat | ansible engine |
| redhat | cloudforms |
| redhat | enterprise linux desktop |
| redhat | enterprise linux server |
| redhat | enterprise linux server aus |
| redhat | enterprise linux server eus |
| redhat | enterprise linux server tus |
| redhat | enterprise linux workstation |
| redhat | virtualization |
Public exploits
| Source | Title | Date |
|---|---|---|
| exploit-db | Paramiko 2.4.1 - Authentication Bypass | 2018-10-29 |
References
- http://www.securityfocus.com/bid/103713
- https://access.redhat.com/errata/RHSA-2018:0591
- https://access.redhat.com/errata/RHSA-2018:0646
- https://access.redhat.com/errata/RHSA-2018:1124
- https://access.redhat.com/errata/RHSA-2018:1125
- https://access.redhat.com/errata/RHSA-2018:1213
- https://access.redhat.com/errata/RHSA-2018:1274
- https://access.redhat.com/errata/RHSA-2018:1328
- https://access.redhat.com/errata/RHSA-2018:1525
- https://access.redhat.com/errata/RHSA-2018:1972
- https://github.com/paramiko/paramiko/blob/master/sites/www/changelog.rst
- https://github.com/paramiko/paramiko/commit/fa29bd8446c8eab237f5187d28787727b4610516
- https://github.com/paramiko/paramiko/issues/1175
- https://lists.debian.org/debian-lts-announce/2018/10/msg00018.html
- https://lists.debian.org/debian-lts-announce/2021/12/msg00025.html
- https://usn.ubuntu.com/3603-1/
- https://usn.ubuntu.com/3603-2/
- https://www.exploit-db.com/exploits/45712/
- http://www.securityfocus.com/bid/103713
- https://access.redhat.com/errata/RHSA-2018:0591
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