#VU21082 Stack-based buffer overflow in Xymon
Vulnerability identifier: #VU21082
Vulnerability risk: High
CVSSv3.1: 8.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]
CVE-ID:
CWE-ID:
CWE-121
Exploitation vector: Network
Exploit availability: No
Vulnerable software:
Xymon
Web applications /
Remote management & hosting panels
Vendor: GNU
Description
The vulnerability allows a remote attacker to access or modify data, or cause a denial of service (DoS) condition on an affected system.
The vulnerability exists in the status-log viewer component due to a boundary error in the "svcstatus.c" file because the software does not properly validate user-supplied input. A remote unauthenticated attacker can submit malicious input, trigger stack-based buffer overflow and access or modify data, or cause a DoS condition on the affected system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
Mitigation
Install updates from vendor's website.
Vulnerable software versions
Xymon: 4.0.0 - 4.3.28
External links
http://github.com/svn2github/xymon/blob/master/branches/4.3.28/web/svcstatus.c
http://lists.debian.org/debian-lts-announce/2019/08/msg00032.html
http://lists.xymon.com/archive/2019-July/046570.html
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
