CVE-2019-3857

Source
Severity Critical
Remote Yes
Type Arbitrary code execution
Description
An issue has been found in libssh2 before 1.8.1 where a server could send a SSH_MSG_CHANNEL_REQUEST packet with an exit signal message with a length of max unsigned integer value. The length would then have a value of 1 added to it and used to allocate memory causing a possible memory write out of bounds error or zero byte allocation.
Group Package Affected Fixed Severity Status Ticket
AVG-926 libssh2 1.8.0-3 1.8.1-1 Critical Fixed
Date Advisory Group Package Severity Description
22 Mar 2019 ASA-201903-12 AVG-926 libssh2 Critical multiple issues
References
https://www.libssh2.org/CVE-2019-3857.html
https://libssh2.org/1.8.0-CVE/CVE-2019-3857.patch