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CVE-2019-3857

Status Candidate

Overview

An integer overflow flaw which could lead to an out of bounds write was discovered in libssh2 before 1.8.1 in the way SSH_MSG_CHANNEL_REQUEST packets with an exit signal are parsed. A remote attacker who compromises a SSH server may be able to execute code on the client system when a user connects to the server.

Related Files

Red Hat Security Advisory 2019-2399-01
Posted Aug 7, 2019
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2019-2399-01 - The libssh2 packages provide a library that implements the SSH2 protocol. Issues addressed include an out of bounds write vulnerability.

tags | advisory, protocol
systems | linux, redhat
advisories | CVE-2019-3855, CVE-2019-3856, CVE-2019-3857, CVE-2019-3863
SHA-256 | 2c7b52210a9dbb15c07cfe183bdc2bf24cf676d8726f61b8fe418f83c930eef9
Red Hat Security Advisory 2019-1943-01
Posted Jul 30, 2019
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2019-1943-01 - The libssh2 packages provide a library that implements the SSH2 protocol. Issues addressed include an out of bounds write vulnerability.

tags | advisory, protocol
systems | linux, redhat
advisories | CVE-2019-3855, CVE-2019-3856, CVE-2019-3857, CVE-2019-3863
SHA-256 | bf9ebcd03d05517eaa570c57eaf138bcf1ac38c3e68af231f714e6b0bfb01bbc
Red Hat Security Advisory 2019-1791-01
Posted Jul 16, 2019
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2019-1791-01 - The libssh2 packages provide a library that implements the SSH2 protocol. Issues addressed include an out of bounds write vulnerability.

tags | advisory, protocol
systems | linux, redhat
advisories | CVE-2019-3855, CVE-2019-3856, CVE-2019-3857, CVE-2019-3863
SHA-256 | ab453bfdfef8772fcad778b2d3e9d17c12720b23bf6235fb3b54576ce8ce5a03
Red Hat Security Advisory 2019-1652-01
Posted Jul 2, 2019
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2019-1652-01 - The libssh2 packages provide a library that implements the SSH2 protocol. Issues addressed include an out of bounds write vulnerability.

tags | advisory, protocol
systems | linux, redhat
advisories | CVE-2019-3855, CVE-2019-3856, CVE-2019-3857, CVE-2019-3863
SHA-256 | f6b2605f92be1b9abd601a11330555396392c57c9504e21f85f6e8c1dd441cf3
Red Hat Security Advisory 2019-1175-01
Posted May 15, 2019
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2019-1175-01 - Kernel-based Virtual Machine offers a full virtualization solution for Linux on numerous hardware platforms. The virt:rhel module contains packages which provide user-space components used to run virtual machines using KVM. The packages also provide APIs for managing and interacting with the virtualized systems. Issues addressed include buffer overflow and out of bounds write vulnerabilities.

tags | advisory, overflow, kernel, vulnerability
systems | linux, redhat
advisories | CVE-2018-12126, CVE-2018-12127, CVE-2018-12130, CVE-2018-20815, CVE-2019-11091, CVE-2019-3855, CVE-2019-3856, CVE-2019-3857, CVE-2019-3863
SHA-256 | 1fb128b68c0e9d02b915ebea7e50bb38fc209e917e5cbb3492a44e325745fd89
Debian Security Advisory 4431-1
Posted Apr 15, 2019
Authored by Debian | Site debian.org

Debian Linux Security Advisory 4431-1 - Chris Coulson discovered several vulnerabilities in libssh2, a SSH2 client-side library, which could result in denial of service, information leaks or the execution of arbitrary code.

tags | advisory, denial of service, arbitrary, vulnerability
systems | linux, debian
advisories | CVE-2019-3855, CVE-2019-3856, CVE-2019-3857, CVE-2019-3858, CVE-2019-3859, CVE-2019-3860, CVE-2019-3861, CVE-2019-3862, CVE-2019-3863
SHA-256 | ca25b9123dbf0e7cd6f76e0d01b5702bb805da272f29716e4ac286686b5dffee
Red Hat Security Advisory 2019-0679-01
Posted Mar 28, 2019
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2019-0679-01 - The libssh2 packages provide a library that implements the SSH2 protocol. Issues addressed include an out of bounds write vulnerability.

tags | advisory, protocol
systems | linux, redhat
advisories | CVE-2019-3855, CVE-2019-3856, CVE-2019-3857, CVE-2019-3863
SHA-256 | a2414a1b44f340e0d42d5ef05c0f4d89a21cbf21917cf010b7b0c5334dfd227b
Slackware Security Advisory - libssh2 Updates
Posted Mar 19, 2019
Authored by Slackware Security Team | Site slackware.com

Slackware Security Advisory - New libssh2 packages are available for Slackware 14.2 and -current to fix security issues.

tags | advisory
systems | linux, slackware
advisories | CVE-2019-3855, CVE-2019-3856, CVE-2019-3857, CVE-2019-3858, CVE-2019-3859, CVE-2019-3860, CVE-2019-3861, CVE-2019-3862, CVE-2019-3863
SHA-256 | fdb3fcc010d3bb0703e700dfb40e08b1ab9651ec7797a5e379ce91b14de2ca66
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