SB2025122903 - Denial of service in Go crypto ssh agent

Description

This security bulletin contains information about 2 vulnerabilities.

1) Out-of-bounds read (CVE-ID: CVE-2025-47914)

CWE-ID: CWE-125 - Out-of-bounds read

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Green

The vulnerability allows a remote attacker to perform a denial of service attack.

The vulnerability exists due to a boundary condition when processing new identity requests in SSH Agent servers. A remote attacker can send specially crafted GSSAPI authentication requests to the application, trigger an out-of-bounds read error and perform a denial of service (DoS) attack.

2) Resource exhaustion (CVE-ID: CVE-2025-58181)

CWE-ID: CWE-400 - Resource exhaustion

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to application does not properly control consumption of internal resources when parsing GSSAPI authentication requests. A remote attacker can send specially crafted GSSAPI authentication requests to the application, trigger resource exhaustion and perform a denial of service (DoS) attack.

Remediation

Install update from vendor's website.

References

• https://go.dev/cl/721960
• https://go.dev/issue/76364
• https://groups.google.com/g/golang-announce/c/w-oX3UxNcZA
• https://pkg.go.dev/vuln/GO-2025-4135
• https://go.dev/cl/721961
• https://go.dev/issue/76363
• https://pkg.go.dev/vuln/GO-2025-4134