CVE-2016-2056

Severity: high (CVSS 8.8 v3.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 54.5% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2016-04-13 · updated 2026-06-17
Weakness: CWE-77

Description

xymond in Xymon 4.1.x, 4.2.x, and 4.3.x before 4.3.25 allow remote authenticated users to execute arbitrary commands via shell metacharacters in the adduser_name argument in (1) web/useradm.c or (2) web/chpasswd.c.

Affected products

Debian Linux: 8.0
Xymon: 4.1.0, 4.1.1, 4.1.2, 4.1.2-p1, 4.1.2-p2, 4.2-alfa (+37)

References

http://packetstormsecurity.com/files/135758/Xymon-4.3.x-Buffer-Overflow-Code-Execution-Information-Disclosure.html
http://packetstormsecurity.com/files/153620/Xymon-useradm-Command-Execution.html
http://www.debian.org/security/2016/dsa-3495
http://www.securityfocus.com/archive/1/537522/100/0/threaded
https://sourceforge.net/p/xymon/code/7892/
http://packetstormsecurity.com/files/135758/Xymon-4.3.x-Buffer-Overflow-Code-Execution-Information-Disclosure.html
http://packetstormsecurity.com/files/153620/Xymon-useradm-Command-Execution.html
http://www.debian.org/security/2016/dsa-3495
http://www.securityfocus.com/archive/1/537522/100/0/threaded
https://sourceforge.net/p/xymon/code/7892/

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