SB2025081265 - SUSE update for libssh

Description

This security bulletin contains information about 3 secuirty vulnerabilities.

1) Integer overflow (CVE-ID: CVE-2025-4877)

The vulnerability allows a local user to execute arbitrary code on the target system.

The vulnerability exists due to integer overflow within the bin_to_base64() function in base64.c. A local user can trigger an integer overflow and execute arbitrary code on the target system.

Note, the vulnerability can be exploited only via the ssh_get_fingerprint_hash() function on 32-bit builds in case the API is (mis)used and a libssh consumer passes in an unexpectedly large input buffer.

2) Use-after-free (CVE-ID: CVE-2025-4878)

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to a use-after-free error within the privatekey_from_file() function. A local user can trigger a use-after-free error and execute arbitrary code with elevated privileges. 

3) Out-of-bounds read (CVE-ID: CVE-2025-5318)

The vulnerability allows a remote user to gain access to potentially sensitive information.

The vulnerability exists due to a boundary condition within the sftp_handle() function. A remote user can trigger an out-of-bounds read error and read contents of memory on the system.

Remediation

Install update from vendor's website.

References

• https://www.suse.com/support/update/announcement/2025/suse-su-202502755-1/