RCE in Xymon
CVE-2016-2056
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.
Vulnerability class: Command Injection (OS Command Injection)
EPSS: 0.563 (98.2th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Xymon — versions 4.1.0, 4.1.1, 4.1.2
- Debian Debian_linux — versions 8.0
- N/a — versions n/a
Weakness classification (CWE)
Public proof-of-concept exploits
References
- 20160214 Xymon: Critical security issues in all versions prior to 4.3.25 (mailing-list, x_refsource_BUGTRAQ)
- cve@mitre.org (x_refsource_CONFIRM, Patch)
- DSA-3495 (vendor-advisory, x_refsource_DEBIAN)
- cve@mitre.org (x_refsource_MISC)
- cve@mitre.org (x_refsource_MISC)
Frequently asked questions
- What is CVE-2016-2056?
- CVE-2016-2056 is a high-severity vulnerability in Xymon, classified under Command Injection. CVSS score: 8.8/10. Published 2016-04-13.
- How severe is CVE-2016-2056?
- High severity. CVSS v3 base score is 8.8 out of 10.
- Is CVE-2016-2056 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.