PT-2018-3089 · Libssh2+5 · Libssh2+5
Published
2018-12-03
·
Updated
2024-06-15
·
CVE-2019-3862
CVSS v3.1
9.1
Critical
| Vector | AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H |
Name of the Vulnerable Software and Affected Versions
libssh2 versions prior to 1.8.1
Description
An out of bounds read flaw was discovered in the way SSH MSG CHANNEL REQUEST packets with an exit status message and no payload are parsed. A remote attacker who compromises a SSH server may be able to cause a Denial of Service or read data in the client memory. The vulnerability is related to the parsing of SSH MSG CHANNEL REQUEST packets and can be exploited by a remote attacker to gain unauthorized access to protected information or cause a service disruption by connecting to a compromised SSH server.
Recommendations
For libssh2 versions prior to 1.8.1, update to version 1.8.1 or later to resolve the issue. As a temporary workaround, consider restricting access to SSH servers until the update can be applied.
Exploit
Fix
DoS
Out of bounds Read
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Related Identifiers
Affected Products
Alt Linux
Centos
Red Hat
Suse
Ubuntu
Libssh2