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CVE-2020-1730

Status Candidate

Overview

A flaw was found in libssh versions before 0.8.9 and before 0.9.4 in the way it handled AES-CTR (or DES ciphers if enabled) ciphers. The server or client could crash when the connection hasn't been fully initialized and the system tries to cleanup the ciphers when closing the connection. The biggest threat from this vulnerability is system availability.

Related Files

Red Hat Security Advisory 2020-5218-01
Posted Nov 24, 2020
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2020-5218-01 - The redhat-virtualization-host packages provide the Red Hat Virtualization Host. These packages include redhat-release-virtualization-host, ovirt-node, and rhev-hypervisor. Red Hat Virtualization Hosts are installed using a special build of Red Hat Enterprise Linux with only the packages required to host virtual machines. RHVH features a Cockpit user interface for monitoring the host's resources and performing administrative tasks. The redhat-virtualization-host packages provide the Red Hat Virtualization Host. These packages include redhat-release-virtualization-host, ovirt-node, and rhev-hypervisor. Red Hat Virtualization Hosts are installed using a special build of Red Hat Enterprise Linux with only the packages required to host virtual machines. RHVH features a Cockpit user interface for monitoring the host's resources and performing administrative tasks. Issues addressed include a denial of service vulnerability.

tags | advisory, denial of service
systems | linux, redhat
advisories | CVE-2020-1730
MD5 | d0fd0978d3c50c95ba57085e14303406
Red Hat Security Advisory 2020-5149-01
Posted Nov 18, 2020
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2020-5149-01 - Red Hat OpenShift Serverless 1.11.0 is a generally available release of the OpenShift Serverless Operator. This version of the OpenShift Serverless Operator is supported on Red Hat OpenShift Container Platform version 4.6.

tags | advisory
systems | linux, redhat
advisories | CVE-2018-20843, CVE-2019-13050, CVE-2019-13627, CVE-2019-14889, CVE-2019-1551, CVE-2019-15903, CVE-2019-16168, CVE-2019-16935, CVE-2019-19221, CVE-2019-19906, CVE-2019-19956, CVE-2019-20218, CVE-2019-20387, CVE-2019-20388, CVE-2019-20454, CVE-2019-20907, CVE-2019-20916, CVE-2019-5018, CVE-2020-10029, CVE-2020-13630, CVE-2020-13631, CVE-2020-13632, CVE-2020-14040, CVE-2020-14422, CVE-2020-1730, CVE-2020-1751, CVE-2020-1752
MD5 | ced99e921e2b5fefdcc67c5c7a1b02e0
Red Hat Security Advisory 2020-4545-01
Posted Nov 4, 2020
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2020-4545-01 - libssh is a library which implements the SSH protocol. It can be used to implement client and server applications. Issues addressed include a denial of service vulnerability.

tags | advisory, denial of service, protocol
systems | linux, redhat
advisories | CVE-2019-14889, CVE-2020-1730
MD5 | bf3f82de4f778f4cd190a7b39cb2124f
Gentoo Linux Security Advisory 202004-08
Posted Apr 11, 2020
Authored by Gentoo | Site security.gentoo.org

Gentoo Linux Security Advisory 202004-8 - A vulnerability in libssh could allow a remote attacker to cause a Denial of Service condition. Versions less than 0.9.4 are affected.

tags | advisory, remote, denial of service
systems | linux, gentoo
advisories | CVE-2020-1730
MD5 | da6f0c88cd6a0c1a1dba4887f8c22c85
Ubuntu Security Notice USN-4327-1
Posted Apr 9, 2020
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 4327-1 - Yasheng Yang discovered that libssh incorrectly handled AES-CTR ciphers. A remote attacker could possibly use this issue to cause libssh to crash, resulting in a denial of service.

tags | advisory, remote, denial of service
systems | linux, ubuntu
advisories | CVE-2020-1730
MD5 | d7373d0a4b917484e39790d50cc2a348
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