CVE-2013-3843

Stack-based buffer overflow in the mk_request_header_process function in mk_request.c in Monkey HTTP Daemon (monkeyd) before 1.2.1 allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via a crafted HTTP header.

Published: 2014-06-13 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2013-3843 is rated Moderate Risk (56.2/100): CVSS Medium severity, with high exploitation likelihood (EPSS 20.18%, 97th percentile). EPSS ranks this CVE among the most likely to be exploited in the near term. High exploitation likelihood—assess exposure and prioritize remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2013-3843

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 40.15% 20.18% -19.97%
2 2025-03-30 42.21% 40.15% -2.06%
3 2025-03-29 — 42.21% —

Full EPSS history (12 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2013-3843

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
6.8 2.0 MEDIUM
AV:N/AC:M/Au:N/C:P/I:P/A:P Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:M)
Exploitation needs some favorable conditions, but not exceptional ones.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:P)
Partial availability impact.
 8.6 6.4 [email protected]

Weakness enumeration for CVE-2013-3843

OS Trackers for CVE-2013-3843

vendor priority summary link
gentoo high CVE-2013-3843: 1 GLSA(s) (201309-17), 1 atom(s) (www-servers/monkeyd); latest impact high. https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2013-3843
ubuntu medium CVE-2013-3843 medium priority: Ubuntu including 1 source packages (monkey), 11 status rows across 11 suites (lucid, precise, saucy, trusty, upstream, utopic, vivid, wily, xenial, yakkety, zesty): DNE 8, ignored 2, released 1. https://ubuntu.com/security/CVE-2013-3843

Affected software / configurations for CVE-2013-3843

Vendor Product Version Raw CPE
monkey-project monkey <= 1.2.0 cpe:2.3:a:monkey-project:monkey:*:*:*:*:*:*:*:*

References for CVE-2013-3843

cvelogic Threat Intelligence