CVE-2025-8277 Libssh: memory exhaustion via repeated key exchange in libssh

A flaw was found in libssh's handling of key exchange KEX processes when a client repeatedly sends incorrect KEX guesses. The library fails to free memory during these rekey operations, which can gradually exhaust system memory. This issue can lead to crashes on the client side, particularly when...

CVE-2025-8277 Libssh: memory exhaustion via repeated key exchange in libssh

A flaw was found in libssh's handling of key exchange KEX processes when a client repeatedly sends incorrect KEX guesses. The library fails to free memory during these rekey operations, which can gradually exhaust system memory. This issue can lead to crashes on the client side, particularly when...

CVE-2025-8277

A flaw was found in libssh's handling of key exchange KEX processes when a client repeatedly sends incorrect KEX guesses. The library fails to free memory during these rekey operations, which can gradually exhaust system memory. This issue can lead to crashes on the client side, particularly when...

CVE-2025-8277

A flaw was found in libssh's handling of key exchange KEX processes when a client repeatedly sends incorrect KEX guesses. The library fails to free memory during these rekey operations, which can gradually exhaust system memory. This issue can lead to crashes on the client side, particularly when...

libssh 安全漏洞

libssh is a C development package from the libssh organization for accessing SSH services, which is capable of executing remote commands, file transfers, as well as providing a secure transport channel for remote programs. A security vulnerability exists in libssh that stems from memory not being...

Missing Release of Memory after Effective Lifetime

Overview Affected versions of this package are vulnerable to Missing Release of Memory after Effective Lifetime via the key exchange process. An attacker can cause gradual memory exhaustion and potential application crashes by repeatedly initiating key exchanges with incorrect guesses as an...

Amazon Linux 2023 : libssh, libssh-config, libssh-devel (ALAS2023-2025-1155)

It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2023-2025-1155 advisory. The privatekeyfromfile uses an uninitialized variable under certainconditions, such as if the file specified by the filename argument doesn'texist. This causes the code to return an invalid...

OESA-2025-2129 libssh security update

The ssh library was designed to be used by programmers needing a working SSH implementation by the mean of a library. The complete control of the client is made by the programmer. With libssh, you can remotely execute programs, transfer files, use a secure and transparent tunnel for your remote...

OESA-2025-2130 libssh security update

The ssh library was designed to be used by programmers needing a working SSH implementation by the mean of a library. The complete control of the client is made by the programmer. With libssh, you can remotely execute programs, transfer files, use a secure and transparent tunnel for your remote...

OESA-2025-2131 libssh security update

The ssh library was designed to be used by programmers needing a working SSH implementation by the mean of a library. The complete control of the client is made by the programmer. With libssh, you can remotely execute programs, transfer files, use a secure and transparent tunnel for your remote...

Libssh: use of uninitialized variable in privatekey_from_file()

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: null pointer dereference in libssh kex session id calculation

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Libssh: write beyond bounds in binary to base64 conversion functions

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Photon OS 5.0: Libssh PHSA-2025-5.0-0597

An update of the libssh package has been released. %NASLMINLEVEL 80900 C Tenable, Inc. The descriptive text and package checks in this plugin were extracted from VMware Security Advisory PHSA-2025-5.0-0597. The text itself is copyright C VMware, Inc. include'compat.inc'; if description...

Linux Distros Unpatched Vulnerability : CVE-2023-1667

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - A NULL pointer dereference was found In libssh during re-keying with algorithm guessing. This issue may allow an authenticated client to cause a denial of...

SUSE 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...

Linux Distros Unpatched Vulnerability : CVE-2025-5987

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - 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...

Linux Distros Unpatched Vulnerability : CVE-2025-5318

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - 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...

DEBIAN-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...

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...