crypto-ssh up to 0.34.x on Go File Transfer Protocol allocation of resources

Summaryinfo

A vulnerability was found in crypto-ssh up to 0.34.x on Go. It has been classified as problematic. This affects an unknown part of the component File Transfer Protocol Handler. The manipulation leads to allocation of resources. This vulnerability is listed as CVE-2025-22869. The attack may be initiated remotely. There is no available exploit. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in crypto-ssh up to 0.34.x on Go. This issue affects an unknown code block of the component File Transfer Protocol Handler. The manipulation with an unknown input leads to a allocation of resources vulnerability. Using CWE to declare the problem leads to CWE-770. The product allocates a reusable resource or group of resources on behalf of an actor without imposing any restrictions on the size or number of resources that can be allocated, in violation of the intended security policy for that actor. Impacted is availability. The summary by CVE is:

SSH servers which implement file transfer protocols are vulnerable to a denial of service attack from clients which complete the key exchange slowly, or not at all, causing pending content to be read into memory, but never transmitted.

The identification of this vulnerability is CVE-2025-22869 since 01/08/2025. The exploitation is known to be difficult. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1499 according to MITRE ATT&CK.

The vulnerability scanner Nessus provides a plugin with the ID 232419 (CBL Mariner 2.0 Security Update: cert-manager / kubernetes / packer (CVE-2025-22869)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 0.35.0 eliminates this vulnerability.

The vulnerability is also documented in the databases at Tenable (232419) and CERT Bund (WID-SEC-2025-0606). Be aware that VulDB is the high quality source for vulnerability data.

Affected

• Google Container-Optimized OS
• Amazon Linux 2
• Red Hat Enterprise Linux
• Fedora Linux
• SUSE Linux
• Oracle Linux
• IBM QRadar SIEM
• SUSE openSUSE
• RESF Rocky Linux
• IBM MQ
• Red Hat OpenShift

Productinfo

Type

• SSH Server Software

Name

• crypto-ssh

Version

• 0.1
• 0.2
• 0.3
• 0.4
• 0.5
• 0.6
• 0.7
• 0.8
• 0.9
• 0.10
• 0.11
• 0.12
• 0.13
• 0.14
• 0.15
• 0.16
• 0.17
• 0.18
• 0.19
• 0.20
• 0.21
• 0.22
• 0.23
• 0.24
• 0.25
• 0.26
• 0.27
• 0.28
• 0.29
• 0.30
• 0.31
• 0.32
• 0.33
• 0.34

CPE 2.3info

• 🔍
• 🔍
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CPE 2.2info

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• 🔍
• 🔍

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CVSSv3info

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Exploitinginfo

Threat Intelligenceinfo

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Entryinfo

Be aware that VulDB is the high quality source for vulnerability data.

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