OESA-2024-1061 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-2024-1060 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...

Ubuntu 16.04 ESM / 18.04 ESM : OpenSSH vulnerabilities (USN-6560-2)

The remote Ubuntu 16.04 ESM / 18.04 ESM host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-6560-2 advisory. USN-6560-1 fixed several vulnerabilities in OpenSSH. This update provides the corresponding update for Ubuntu 16.04 LTS and Ubuntu 18.04 LTS...

Fedora 38 : putty (2024-71c2c6526c)

The remote Fedora 38 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2024-71c2c6526c advisory. Security fix for CVE-2023-48795. Tenable has extracted the preceding description block directly from the Fedora security advisory. Note that Nessus...

Updated putty package fixes a security vulnerability (Terrapin attack)

The SSH transport protocol with certain OpenSSH extensions, found in OpenSSH before 9.6 and many other products, allows remote attackers to bypass integrity checks such that some packets are omitted from the extension negotiation message, and a client and server may consequently end up with a...

Updated libssh2 packages fix a security vulnerability (Terrapin Attack)

The SSH transport protocol with certain OpenSSH extensions, found in OpenSSH before 9.6 and other products, allows remote attackers to bypass integrity checks such that some packets are omitted from the extension negotiation message, and a client and server may consequently end up with a connecti...

Amazon Linux 2023 : libssh, libssh-config, libssh-devel (ALAS2023-2024-468)

It is, therefore, affected by a vulnerability as referenced in the ALAS2023-2024-468 advisory. AWS is aware of CVE-2023-48795, also known as Terrapin, which is found in the SSH protocol and affects SSH channel integrity. A protocol extension has been introduced by OpenSSH which needs to be applie...

OESA-2023-1978 openssh security update

OpenSSH is the premier connectivity tool for remote login with the SSH protocol. \ It encrypts all traffic to eliminate eavesdropping, connection hijacking, and \ other attacks. In addition, OpenSSH provides a large suite of secure tunneling \ capabilities, several authentication methods, and...

OESA-2023-1977 openssh security update

OpenSSH is the premier connectivity tool for remote login with the SSH protocol. \ It encrypts all traffic to eliminate eavesdropping, connection hijacking, and \ other attacks. In addition, OpenSSH provides a large suite of secure tunneling \ capabilities, several authentication methods, and...

GLSA-202312-17 : OpenSSH: Multiple Vulnerabilities

The remote host is affected by the vulnerability described in GLSA-202312-17 OpenSSH: Multiple Vulnerabilities - The SSH transport protocol with certain OpenSSH extensions, found in OpenSSH before 9.6 and other products, allows remote attackers to bypass integrity checks such that some packets ar...

The SSH transport protocol with certain OpenSSH extensions found in OpenSSH before 9.6 and other products allows remote attackers to bypass integrity checks such that some packets are omitted (from the extension negotiation message) and a client and server may consequently end up with a connection for which some security features have been downgraded or disabled aka a Terrapin attack. This occurs because the SSH Binary Packet Protocol (BPP) implemented by these extensions mishandles the handshake phase and mishandles use of sequence numbers. For example there is an effective attack against SSH's use of ChaCha20-Poly1305 (and CBC with Encrypt-then-MAC). The bypass occurs in [email protected] and (if CBC is used) the [email protected] MAC algorithms. This also affects Maverick Synergy Java SSH API before 3.1.0-SNAPSHOT Dropbear through 2022.83 Ssh before 5.1.1 in Erlang/OTP PuTTY before 0.80 AsyncSSH before 2.14.2 golang.org/x/crypto before 0.17.0 libssh before 0.10.6 libssh2

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FreeBSD : nebula -- security fix for terrapin vulnerability (0f7598cc-9fe2-11ee-b47f-901b0e9408dc)

The version of FreeBSD installed on the remote host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the 0f7598cc-9fe2-11ee-b47f-901b0e9408dc advisory. - The SSH transport protocol with certain OpenSSH extensions, found in OpenSSH before 9.6 and other...

Hitachi Energy RTU500 Series Improper Validation of Specified Index, Position, or Offset in Input (CVE-2023-5768)

A vulnerability exists in the HCI IEC 60870-5-104 that affects the RTU500 series product versions listed below. Incomplete or wrong received APDU frame layout may cause blocking on link layer. Error reason was an endless blocking when reading incoming frames on link layer with wrong length...

FreeBSD : putty -- add protocol extension against 'Terrapin attack' (91955195-9ebb-11ee-bc14-a703705db3a6)

The version of FreeBSD installed on the remote host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the 91955195-9ebb-11ee-bc14-a703705db3a6 advisory. - The SSH transport protocol with certain OpenSSH extensions, found in OpenSSH before 9.6 and other...

Prefix Truncation Attack (Terrapin Attack)

libssh is vulnerable to Terrapin attack. The vulnerability is due to mishandling of the handshake phase and sequence numbers in the SSH Binary Packet Protocol BPP with certain OpenSSH extensions. This allows an attacker to bypass integrity checks and omit packets during extension negotiation, and...

Slackware Linux 14.2 / 15.0 / current libssh Multiple Vulnerabilities (SSA:2023-353-01)

The version of libssh installed on the remote host is prior to 0.10.6. It is, therefore, affected by multiple vulnerabilities as referenced in the SSA:2023-353-01 advisory. - The SSH transport protocol with certain OpenSSH extensions, found in OpenSSH before 9.6 and other products, allows remote...

The vulnerability of the SSH protocol lies in its ability to adjust packet sequence numbers during connection negotiation and delete arbitrary amounts of SSH protocol messages. This allows attackers to bypass integrity checks, disable existing security functions, and gain unauthorized access to protected information.

The vulnerability of the SSH protocol lies in the ability to alter the sequence numbers of packets during the connection negotiation process, thereby eliminating any number of SSH protocol messages. Exploiting this vulnerability allows a malicious actor to bypass integrity checks, disable existin...

FreeBSD -- Prefix Truncation Attack in the SSH protocol

Problem Description: The SSH protocol executes an initial handshake between the server and the client. This protocol handshake includes the possibility of several extensions allowing different options to be selected. Validation of the packets in the handshake is done through sequence numbers...

Authentication Bypass by Capture-replay

Overview Affected versions of this package are vulnerable to Authentication Bypass by Capture-replay during the establishment of the secure channel. An attacker can manipulate handshake sequence numbers to delete messages sent immediately after the channel is established. Note: 1 Sequence numbers...

DEBIAN-CVE-2023-48795

The SSH transport protocol with certain OpenSSH extensions, found in OpenSSH before 9.6 and other products, allows remote attackers to bypass integrity checks such that some packets are omitted from the extension negotiation message, and a client and server may consequently end up with a connecti...