CVE-2013-4359

Exp

Integer overflow in kbdint.c in mod_sftp in ProFTPD 1.3.4d and 1.3.5r3 allows remote attackers to cause a denial of service (memory consumption) via a large response count value in an authentication request, which triggers a large memory allocation.

Published: 2013-09-30 Last update: 2026-04-29 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2013-4359 is rated High Exploit Risk (62.6/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 1.40%). 2 public exploit reference(s) are indexed (Exploit-DB). Public exploits are available—assess exposure, apply mitigations, and prioritize patching.

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

Public exploit references (Exploit-DB) for CVE-2013-4359

EDB-ID Source Kind Published Link
— nvd_ref exploit_tag Exploit-DB ↗
— nvd_ref exploit_tag Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2013-4359

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 2026-04-03 1.89% 1.40% -0.49%
2 2025-12-28 1.74% 1.89% +0.15%
3 2025-12-27 — 1.74% —

Full EPSS history (19 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2013-4359

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
5.0 2.0 MEDIUM
AV:N/AC:L/Au:N/C:N/I:N/A:P Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:N)
No confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:P)
Partial availability impact.
 10.0 2.9 [email protected]

Weakness enumeration for CVE-2013-4359

OS Trackers for CVE-2013-4359

vendor priority summary link
debian not yet assigned CVE-2013-4359 not yet assigned priority: Debian including 1 source packages (proftpd-dfsg), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. https://security-tracker.debian.org/tracker/CVE-2013-4359
gentoo high CVE-2013-4359: 1 GLSA(s) (201309-15), 1 atom(s) (net-ftp/proftpd); latest impact high. https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2013-4359
ubuntu medium CVE-2013-4359 medium priority: Ubuntu including 1 source packages (proftpd-dfsg), 15 status rows across 15 suites (artful, bionic, lucid, precise, quantal, raring, saucy, trusty, upstream, utopic, vivid, wily, xenial, yakkety, zesty): not-affected 8, ignored 5, DNE 1, released 1. https://ubuntu.com/security/CVE-2013-4359

Affected software / configurations for CVE-2013-4359

Vendor Product Version Raw CPE
proftpd proftpd 1.3.4 cpe:2.3:a:proftpd:proftpd:1.3.4:d:*:*:*:*:*:*
proftpd proftpd 1.3.5 cpe:2.3:a:proftpd:proftpd:1.3.5:rc3:*:*:*:*:*:*

References for CVE-2013-4359

cvelogic Threat Intelligence