NewStart CGSL CORE 5.04 / MAIN 5.04 : libssh2 Multiple Vulnerabilities (NS-SA-2019-0073)
high Nessus Plugin ID 127279
Language:
New! Plugin Severity Now Using CVSS v3
The calculated severity for Plugins has been updated to use CVSS v3 by default. Plugins that do not have a CVSS v3 score will fall back to CVSS v2 for calculating severity. Severity display preferences can be toggled in the settings dropdown.
Synopsis
The remote machine is affected by multiple vulnerabilities.Description
The remote NewStart CGSL host, running version CORE 5.04 / MAIN 5.04, has libssh2 packages installed that are affected by multiple vulnerabilities:- An integer overflow flaw which could lead to an out of bounds write was discovered in libssh2 in the way packets are read from the server. 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.
(CVE-2019-3855)
- An integer overflow flaw, which could lead to an out of bounds write, was discovered in libssh2 in the way keyboard prompt requests 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.
(CVE-2019-3856)
- An integer overflow flaw which could lead to an out of bounds write was discovered in libssh2 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. (CVE-2019-3857)
- A flaw was found in libssh2 before 1.8.1. A server could send a multiple keyboard interactive response messages whose total length are greater than unsigned char max characters. This value is used as an index to copy memory causing in an out of bounds memory write error.
(CVE-2019-3863)
Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.
Solution
Upgrade the vulnerable CGSL libssh2 packages. Note that updated packages may not be available yet. Please contact ZTE for more information.See Also
Plugin Details
Severity: High
ID: 127279
File Name: newstart_cgsl_NS-SA-2019-0073_libssh2.nasl
Version: 1.4
Type: local
Published: 8/12/2019
Updated: 1/14/2021
Dependencies: ssh_get_info.nasl
Risk Information
CVSS Score Source: CVE-2019-3855
VPR
Risk Factor: Medium
Score: 5.9
CVSS v2
Risk Factor: High
Base Score: 9.3
Temporal Score: 6.9
Vector: AV:N/AC:M/Au:N/C:C/I:C/A:C
Temporal Vector: E:U/RL:OF/RC:C
CVSS v3
Risk Factor: High
Base Score: 8.8
Temporal Score: 7.7
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Temporal Vector: E:U/RL:O/RC:C
Vulnerability Information
Required KB Items: Host/local_checks_enabled, Host/ZTE-CGSL/release, Host/ZTE-CGSL/rpm-list, Host/cpu
Exploit Ease: No known exploits are available
Patch Publication Date: 7/17/2019
Vulnerability Publication Date: 3/21/2019
Reference Information
CVE: CVE-2019-3855, CVE-2019-3856, CVE-2019-3857, CVE-2019-3863
BID: 107485