openEuler 24.03 LTS update for openssh



Risk Medium
Patch available YES
Number of vulnerabilities 2
CVE-ID CVE-2025-26465
CVE-2025-32728
CWE-ID CWE-300
CWE-693
Exploitation vector Network
Public exploit N/A
Vulnerable software
 openEuler
Operating systems & Components / Operating system

openssh-help
Operating systems & Components / Operating system package or component

pam_ssh_agent_auth
Operating systems & Components / Operating system package or component

openssh-server
Operating systems & Components / Operating system package or component

openssh-keycat
Operating systems & Components / Operating system package or component

openssh-debugsource
Operating systems & Components / Operating system package or component

openssh-debuginfo
Operating systems & Components / Operating system package or component

openssh-clients
Operating systems & Components / Operating system package or component

openssh-askpass
Operating systems & Components / Operating system package or component

openssh
Operating systems & Components / Operating system package or component

Vendor openEuler

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Man-in-the-Middle (MitM) attack

EUVDB-ID: #VU104035

Risk: Medium

CVSSv4.0: 2.1 [CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:A/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2025-26465

CWE-ID: CWE-300 - Channel Accessible by Non-Endpoint ('Man-in-the-Middle')

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform MitM attack.

The vulnerability exists due to incorrect processing of user-supplied data in ssh(1). A remote attacker can perform server impersonation when VerifyHostKeyDNS enabled.

Mitigation

Install updates from vendor's repository.

Vulnerable software versions

openEuler: 24.03 LTS

openssh-help: before 9.3p2-8

pam_ssh_agent_auth: before 0.10.4-4.8

openssh-server: before 9.3p2-8

openssh-keycat: before 9.3p2-8

openssh-debugsource: before 9.3p2-8

openssh-debuginfo: before 9.3p2-8

openssh-clients: before 9.3p2-8

openssh-askpass: before 9.3p2-8

openssh: before 9.3p2-8

CPE2.3 External links

https://www.openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2025-1439


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

2) Protection mechanism failure

EUVDB-ID: #VU107332

Risk: Low

CVSSv4.0: 0.6 [CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2025-32728

CWE-ID: CWE-693 - Protection Mechanism Failure

Exploit availability: No

Description

The vulnerability allows a remote user to bypass implemented security restrictions.

The vulnerability exists due to software does not properly handle the DisableForwarding directive, which does not disable X11 forwarding and agent forwarding as documented. A remote user can bypass expected application's behavior and bypass implemented security restrictions.

Mitigation

Install updates from vendor's repository.

Vulnerable software versions

openEuler: 24.03 LTS

openssh-help: before 9.3p2-8

pam_ssh_agent_auth: before 0.10.4-4.8

openssh-server: before 9.3p2-8

openssh-keycat: before 9.3p2-8

openssh-debugsource: before 9.3p2-8

openssh-debuginfo: before 9.3p2-8

openssh-clients: before 9.3p2-8

openssh-askpass: before 9.3p2-8

openssh: before 9.3p2-8

CPE2.3 External links

https://www.openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2025-1439


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.



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