Protect yourself against future threats.
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AUSCERT External Security Bulletin Redistribution
ESB-2019.4281
libssh2 security update
14 November 2019
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AusCERT Security Bulletin Summary
---------------------------------
Product: libssh2
Publisher: Debian
Operating System: Debian GNU/Linux 8
Impact/Access: Denial of Service -- Remote with User Interaction
Access Confidential Data -- Remote with User Interaction
Resolution: Patch/Upgrade
CVE Names: CVE-2019-17498
Reference: ESB-2019.4223
ESB-2019.4181
Original Bulletin:
https://security-tracker.debian.org/tracker/DLA-1991-1
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Package : libssh2
Version : 1.4.3-4.1+deb8u6
CVE ID : CVE-2019-17498
Debian Bug : 943562
In libssh2, SSH_MSG_DISCONNECT logic in packet.c has an integer
overflow in a bounds check, enabling an attacker to specify an
arbitrary (out-of-bounds) offset for a subsequent memory read. A
crafted SSH server may be able to disclose sensitive information or
cause a denial of service condition on the client system when a user
connects to the server
For Debian 8 "Jessie", this problem has been fixed in version
1.4.3-4.1+deb8u6.
We recommend that you upgrade your libssh2 packages.
Further information about Debian LTS security advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://wiki.debian.org/LTS
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===========================================================================
Australian Computer Emergency Response Team
The University of Queensland
Brisbane
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Internet Email: auscert@auscert.org.au
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