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Vulnerability record · CVE-2013-3724 · published 1 August 2013

CVE-2013-3724: Monkey-project monkey improper input validation vulnerability

Monkey Project · Monkey

The mk_request_header_process function in mk_request.c in Monkey 1.1.1 allows remote attackers to cause a denial of service (thread crash and service outage) via a '\0' character in an HTTP request.

5.0 CVSS 2.0 Medium EPSS 14% · top 3.6% CWE-20 · Improper input validation
5.0CVSS 2.0 base score
14%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
2References, 2 tagged exploit
16 Jun 2026Last modified by NVD

Description

The mk_request_header_process function in mk_request.c in Monkey 1.1.1 allows remote attackers to cause a denial of service (thread crash and service outage) via a '\0' character in an HTTP request.

AV:N/AC:L/Au:N/C:N/I:N/A:P

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://bugs.monkey-project.com/ticket/181 ExploitPatch
http://bugs.monkey-project.com/ticket/181 ExploitPatch

Track CVE-2013-3724 inside VULONE

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2013-2159Monkey-project monkey improper authentication vulnerabilityMonkey HTTP Daemon: broken user name authenticationEPSS 2.8%7.5CVE-2025-63656Monkey-project monkey out-of-bounds read vulnerabilityAn out-of-bounds read in the header_cmp function (mk_server/mk_http_parser.c) of monkey commit f37e984 allows attackers to cause a Denial of Service …EPSS 1.2%7.5CVE-2025-63657Monkey-project monkey out-of-bounds read vulnerabilityAn out-of-bounds read in the mk_mimetype_find function (mk_server/mk_mimetype.c) of monkey commit f37e984 allows attackers to cause a Denial of Servi…EPSS 1.2%7.5CVE-2025-63658Monkey-project monkey stack-based buffer overflow vulnerabilityA stack overflow in the mk_http_index_lookup function (mk_server/mk_http.c) of monkey commit f37e984 allows attackers to cause a Denial of Service (D…EPSS 1.3%7.5CVE-2025-63649Monkey-project monkey out-of-bounds read vulnerabilityAn out-of-bounds read in the http_parser_transfer_encoding_chunked function (mk_server/mk_http_parser.c) of monkey commit f37e984 allows attackers to…EPSS 1.1%7.5CVE-2025-63650Monkey-project monkey out-of-bounds read vulnerabilityAn out-of-bounds read in the mk_ptr_to_buf in mk_core function (mk_memory.c) of monkey commit f37e984 allows attackers to cause a Denial of Service (…EPSS 1.2%7.5CVE-2025-63651Monkey-project monkey use after free vulnerabilityA use-after-free in the mk_string_char_search function (mk_core/mk_string.c) of monkey commit f37e984 allows attackers to cause a Denial of Service (…EPSS 1.1%7.5CVE-2025-63652Monkey-project monkey use after free vulnerabilityA use-after-free in the mk_http_request_end function (mk_server/mk_http.c) of monkey commit f37e984 allows attackers to cause a Denial of Service (Do…EPSS 1.2%

Source: NIST National Vulnerability Database (record CVE-2013-3724), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.