CVE-2024-39223: An authentication bypass in the SSH service of gost v2.11.5 allows attackers to intercept communications via setting the HostKeyCallback function to ssh.InsecureIgnoreHostKey

Critical severity · published Jul 3, 2024

CVE-2024-39223

An authentication bypass in the SSH service of gost v2.11.5 allows attackers to intercept communications via setting the HostKeyCallback function to ssh.InsecureIgnoreHostKey

9.8

CVSS

0.7%

EPSS

On KEV

CVSS vector

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

Attack vector

Network

Complexity

Low

Privileges

None

User interaction

None

Confidentiality

High

Integrity

High

Availability

High

Scope

Unchanged

Exploitation

Is it being used?

Exploit prediction (EPSS)0.7% · higher than 53% of CVEs

Exploited in the wildNo evidence yet

CISA KEVNot listed

Ransomware campaign useNot known

Affected products

Which versions

Gost · Ginuerzh

through 2.11.5 · source: CISA

Affected product

Gost

Ginuerzh

All Gost CVEs

References

NVD

https://nvd.nist.gov/vuln/detail/CVE-2024-39223

CVE.org

https://www.cve.org/CVERecord?id=CVE-2024-39223

gist.github.com

https://gist.github.com/nyxfqq/a7242170b1118e78436a62dee4e09e8a

github.com

https://github.com/ginuerzh/gost/blob/729d0e70005607dc7c69fc1de62fd8fe21f85355/ssh.go#L229

github.com

https://github.com/ginuerzh/gost/issues/1034