CVE-2009-2732

ntop < 3.3.10 - Denial of Service via Malformed Authorization Header

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2009-2732. PoCs published by Brad Antoniewicz.

AI-analyzed exploit summary This exploit triggers a denial-of-service (DoS) in ntop by sending a malformed HTTP Basic Authentication header, causing a NULL-pointer dereference during base64 decoding and username processing.

Description

The checkHTTPpassword function in http.c in ntop 3.3.10 and earlier allows remote attackers to cause a denial of service (NULL pointer dereference and daemon crash) via an Authorization HTTP header that lacks a : (colon) character in the base64-decoded string.

Exploits (1)

exploitdb WORKING POC VERIFIED
by Brad Antoniewicz · rubydoslinux
https://www.exploit-db.com/exploits/33176

This exploit triggers a denial-of-service (DoS) in ntop by sending a malformed HTTP Basic Authentication header, causing a NULL-pointer dereference during base64 decoding and username processing.

Classification
Working Poc 95%
Attack Type
Dos
Complexity
Trivial
Reliability
Reliable
Target: ntop <= 3.3.10
No auth needed
Prerequisites: Network access to the ntop web interface (default port 3000)
devstral-2 · analyzed Feb 16, 2026 Full analysis →

References (5)

Core 5
Core References
Vendor Advisory third-party-advisory x_refsource_secunia
http://secunia.com/advisories/36403
Third Party Advisory, VDB Entry mailing-list x_refsource_bugtraq
http://www.securityfocus.com/archive/1/505862/100/0/threaded
Third Party Advisory, VDB Entry mailing-list x_refsource_bugtraq
http://www.securityfocus.com/archive/1/505876/100/0/threaded
Vendor Advisory vdb-entry x_refsource_vupen
http://www.vupen.com/english/advisories/2009/2317
Vendor Advisory vendor-advisory x_refsource_mandriva
http://www.mandriva.com/security/advisories?name=MDVSA-2010:181

Scores

EPSS 0.0727
EPSS Percentile 93.6%

Details

CWE
CWE-119
Status published
Products (1)
ntop/ntop < 3.3.10
Published Aug 21, 2009
Tracked Since Feb 18, 2026