Fedora 42 : libssh (2025-69acb71145)

The remote Fedora 42 host has a package installed that is affected by a vulnerability as referenced in the FEDORA-2025-69acb71145 advisory. New upstream release fixing various security issues and bugs Tenable has extracted the preceding description block directly from the Fedora security advisory...

UBUNTU-CVE-2025-5449

A flaw was found in the SFTP server message decoding logic of libssh. The issue occurs due to an incorrect packet length check that allows an integer overflow when handling large payload sizes on 32-bit systems. This issue leads to failed memory allocation and causes the server process to crash,...

UBUNTU-CVE-2025-5372

A flaw was found in libssh versions built with OpenSSL versions older than 3.0, specifically in the sshkdf function responsible for key derivation. Due to inconsistent interpretation of return values where OpenSSL uses 0 to indicate failure and libssh uses 0 for success—the function may mistakenl...

Slackware Linux 15.0 / current libssh Multiple Vulnerabilities (SSA:2025-175-01)

The version of libssh installed on the remote host is prior to 0.11.2. It is, therefore, affected by multiple vulnerabilities as referenced in the SSA:2025-175-01 advisory. New libssh packages are available for Slackware 15.0 and -current to fix security issues. Tenable has extracted the precedin...

UBUNTU-CVE-2025-4878

A vulnerability was found in libssh, where an uninitialized variable exists under certain conditions in the privatekeyfromfile function. This flaw can be triggered if the file specified by the filename doesn't exist and may lead to possible signing failures or heap corruption...

UBUNTU-CVE-2025-5351

A flaw was found in the key export functionality of libssh. The issue occurs in the internal function responsible for converting cryptographic keys into serialized formats. During error handling, a memory structure is freed but not cleared, leading to a potential double free issue if an additiona...

UBUNTU-CVE-2025-5987

A flaw was found in libssh when using the ChaCha20 cipher with the OpenSSL library. If an attacker manages to exhaust the heap space, this error is not detected and may lead to libssh using a partially initialized cipher context. This occurs because the OpenSSL error code returned aliases with th...

SUSE CVE-2025-4877

There's a vulnerability in the libssh package where when a libssh consumer passes in an unexpectedly large input buffer to sshgetfingerprinthash function. In such cases the bintobase64 function can experience an integer overflow leading to a memory under allocation, when that happens it's possibl...

SUSE CVE-2025-4878

A vulnerability was found in libssh, where an uninitialized variable exists under certain conditions in the privatekeyfromfile function. This flaw can be triggered if the file specified by the filename doesn't exist and may lead to possible signing failures or heap corruption...

SUSE CVE-2025-5318

A flaw was found in the libssh library in versions less than 0.11.2. An out-of-bounds read can be triggered in the sftphandle function due to an incorrect comparison check that permits the function to access memory beyond the valid handle list and to return an invalid pointer, which is used in...

SUSE CVE-2025-5351

A flaw was found in the key export functionality of libssh. The issue occurs in the internal function responsible for converting cryptographic keys into serialized formats. During error handling, a memory structure is freed but not cleared, leading to a potential double free issue if an additiona...

SUSE CVE-2025-5449

A flaw was found in the SFTP server message decoding logic of libssh. The issue occurs due to an incorrect packet length check that allows an integer overflow when handling large payload sizes on 32-bit systems. This issue leads to failed memory allocation and causes the server process to crash,...

SUSE CVE-2025-5987

A flaw was found in libssh when using the ChaCha20 cipher with the OpenSSL library. If an attacker manages to exhaust the heap space, this error is not detected and may lead to libssh using a partially initialized cipher context. This occurs because the OpenSSL error code returned aliases with th...

[slackware-security] libssh

New libssh packages are available for Slackware 15.0 and -current to fix security issues. Here are the details from the Slackware 15.0 ChangeLog: patches/packages/libssh-0.11.2-i586-1slack15.0.txz: Upgraded. This update fixes security issues: Write beyond bounds in binary to base64 conversion. Us...

DEBIAN-CVE-2025-5318

A flaw was found in the libssh library in versions less than 0.11.2. An out-of-bounds read can be triggered in the sftphandle function due to an incorrect comparison check that permits the function to access memory beyond the valid handle list and to return an invalid pointer, which is used in...

AZL-64358 CVE-2025-5318 affecting package libssh for versions less than 0.10.6-2

A flaw was found in the libssh library in versions less than 0.11.2. An out-of-bounds read can be triggered in the sftphandle function due to an incorrect comparison check that permits the function to access memory beyond the valid handle list and to return an invalid pointer, which is used in...

AZL-64346 CVE-2025-5318 affecting package libssh for versions less than 0.10.6-2

A flaw was found in the libssh library in versions less than 0.11.2. An out-of-bounds read can be triggered in the sftphandle function due to an incorrect comparison check that permits the function to access memory beyond the valid handle list and to return an invalid pointer, which is used in...

CVE-2025-5318

A flaw was found in the libssh library in versions less than 0.11.2. An out-of-bounds read can be triggered in the sftphandle function due to an incorrect comparison check that permits the function to access memory beyond the valid handle list and to return an invalid pointer, which is used in...

UBUNTU-CVE-2025-5318

A flaw was found in the libssh library in versions less than 0.11.2. An out-of-bounds read can be triggered in the sftphandle function due to an incorrect comparison check that permits the function to access memory beyond the valid handle list and to return an invalid pointer, which is used in...

CVE-2025-5318

CVE-2025-5318 : A flaw in libssh before 0.11.2 allows an authenticated remote attacker to trigger an out-of-bounds read in sftp_handle() due to an incorrect comparison, potentially reading memory beyond the valid handle list and returning an invalid pointer. Documented impacts include confidentia...