PT-2018-1896 · Openssh+5 · Openssh+5
Published
2017-08-01
·
Updated
2025-10-29
·
CVE-2016-10708
CVSS v3.1
7.5
High
| Vector | AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
Name of the Vulnerable Software and Affected Versions
OpenSSH versions prior to 7.4
Description
The issue is related to a denial of service caused by a NULL pointer dereference and daemon crash in OpenSSH. This can be triggered by remote attackers via an out-of-sequence NEWKEYS message, as demonstrated by Honggfuzz, and is related to the kex.c and packet.c files. The error occurs when handling an out-of-sequence NEWKEYS message, allowing a remote attacker to cause a denial of service.
Recommendations
For OpenSSH versions prior to 7.4, update to version 7.4 or later to resolve the issue. As a temporary workaround, consider restricting access to the sshd server to minimize the risk of exploitation.
Exploit
Fix
DoS
NULL Pointer Dereference
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Weakness Enumeration
Related Identifiers
Affected Products
Alt Linux
Centos
Openssh
Red Hat
Suse
Ubuntu