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CVE-2018-7750

CRITICALCVSS 9.8/10EPSS 27.07%

Last modified

CVE-2018-7750 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. 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.. EPSS estimates a 27.07% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1
9.8/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Probability
27.07%

97.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
ParamikoParamiko< 1.17.6
ParamikoParamiko>= 1.18.0, < 1.18.5
ParamikoParamiko>= 2.0.0, < 2.0.8
ParamikoParamiko>= 2.1.0, < 2.1.5
ParamikoParamiko>= 2.2.0, < 2.2.3
ParamikoParamiko>= 2.3.0, < 2.3.2
ParamikoParamiko2.4.0
RedhatAnsible Engine2.0
RedhatAnsible Engine2.4
RedhatCloudforms4.5
RedhatCloudforms4.6
RedhatVirtualization4.1
RedhatEnterprise Linux Desktop6.0
RedhatEnterprise Linux Server6.0
RedhatEnterprise Linux Server7.0
RedhatEnterprise Linux Server Aus6.4
RedhatEnterprise Linux Server Aus6.5
RedhatEnterprise Linux Server Aus6.6
RedhatEnterprise Linux Server Eus6.7
RedhatEnterprise Linux Server Tus6.6
RedhatEnterprise Linux Workstation6.0
DebianDebian Linux8.0
DebianDebian Linux9.0

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2018-7750?
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.
How severe is CVE-2018-7750?
CVE-2018-7750 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 27.07% probability of exploitation in the next 30 days.
How do I fix CVE-2018-7750?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2018-7750?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST