wu-ftpd up to 2.6.3 Email SockPrintf memory corruption

CVSS Meta Temp Score
CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.
Current Exploit Price (≈)
Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.
CTI Interest Score
Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
6.6$0-$5k0.00

Summaryinfo

A vulnerability was found in wu-ftpd up to 2.6.3 and classified as critical. Affected by this issue is the function SockPrintf of the component Email Handler. Executing a manipulation can lead to memory corruption. This vulnerability appears as CVE-2003-1327. The attack may be performed from remote. In addition, an exploit is available. The application of restrictive firewalling is recommended.

Detailsinfo

A vulnerability classified as critical was found in wu-ftpd up to 2.6.3 (File Transfer Software). This vulnerability affects the function SockPrintf of the component Email Handler. The manipulation with an unknown input leads to a memory corruption vulnerability. The CWE definition for the vulnerability is CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

Buffer overflow in the SockPrintf function in wu-ftpd 2.6.2 and earlier, when compiled with MAIL_ADMIN option enabled on a system that supports very long pathnames, might allow remote anonymous users to execute arbitrary code by uploading a file with a long pathname, which triggers the overflow when wu-ftpd constructs a notification message to the administrator.

The bug was discovered 09/22/2003. The weakness was presented 09/22/2003 by Adam Zabrocki (pi3 and pi3ki31ny) as not defined posting (Bugtraq). The advisory is available at securityfocus.com. This vulnerability was named CVE-2003-1327 since 05/14/2007. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Technical details and also a exploit are known.

It is possible to download the exploit at securityfocus.com. It is declared as proof-of-concept. As 0-day the estimated underground price was around $25k-$100k. The vulnerability scanner Nessus provides a plugin with the ID 18726 (Slackware 9.0 / current : WU-FTPD Security Advisory (SSA:2003-259-03)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Slackware Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 27275 (WU-FTPD SockPrintf() Remote Stack-based Buffer Overrun Vulnerability).

Applying a patch is able to eliminate this problem. The bugfix is ready for download at wu-ftpd.org.Proper firewalling of is able to address this issue. The best possible mitigation is suggested to be applying a restrictive firewalling. A possible mitigation has been published 2 days after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (13269), Tenable (18726), SecurityFocus (BID 8668†), OSVDB (2594†) and Secunia (SA9835†). Additional details are provided at securiteam.com. See VDB-218 for similar entry. If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Type

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.3
VulDB Meta Temp Score: 6.6

VulDB Base Score: 7.3
VulDB Temp Score: 6.6
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
💳💳💳💳💳💳
💳💳💳💳💳💳
💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock

VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Memory corruption
CWE: CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-DayUnlockUnlockUnlockUnlock
TodayUnlockUnlockUnlockUnlock

Nessus ID: 18726
Nessus Name: Slackware 9.0 / current : WU-FTPD Security Advisory (SSA:2003-259-03)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍
Nessus Port: 🔍

OpenVAS ID: 14371
OpenVAS Name: wu-ftpd MAIL_ADMIN overflow
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Firewall
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Patch: wu-ftpd.org
SourceFire IPS: 🔍

Timelineinfo

09/22/2003 🔍
09/22/2003 +0 days 🔍
09/22/2003 +0 days 🔍
09/22/2003 +0 days 🔍
09/22/2003 +0 days 🔍
09/23/2003 +1 days 🔍
09/24/2003 +1 days 🔍
09/24/2003 +0 days 🔍
12/31/2003 +97 days 🔍
07/14/2004 +196 days 🔍
07/13/2005 +364 days 🔍
05/14/2007 +670 days 🔍
07/14/2025 +6635 days 🔍

Sourcesinfo

Advisory: securityfocus.com⛔
Researcher: Adam Zabrocki (pi3, pi3ki31ny)
Status: Confirmed

CVE: CVE-2003-1327 (🔍)
GCVE (CVE): GCVE-0-2003-1327
GCVE (VulDB): GCVE-100-298
X-Force: 13269 - WU-FTPD MAIL_ADMIN configuration SockPrintf buffer overflow, High Risk
SecurityFocus: 8668 - Wu-Ftpd SockPrintf() Remote Stack-based Buffer Overrun Vulnerability
Secunia: 9835 - WU-FTPD "MAIL_ADMIN" Buffer Overflow Vulnerability, Moderately Critical
OSVDB: 2594 - WU-FTPD MAIL_ADMIN Function Remote Overflow
SecurityTracker: 1007775
Vulnerability Center: 4738 - Buffer Overflow in Wu-FTP SockPrintf Function Enables Code Execution, High

scip Labs: https://www.scip.ch/en/?labs.20161013
Misc.: 🔍
See also: 🔍

Entryinfo

Created: 09/23/2003 11:22
Updated: 07/14/2025 01:26
Changes: 09/23/2003 11:22 (102), 06/26/2019 16:07 (2), 07/14/2025 01:26 (25)
Complete: 🔍
Cache ID: 216:66D:103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

Discussion

No comments yet. Languages: en.

Please log in to comment.

◂ PreviousOverviewNext ▸

Interested in the pricing of exploits?

See the underground prices here!