wzdftpd 0.8.0/0.8.2 do_login_loop 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.
4.8$0-$5k0.00

A vulnerability was found in wzdftpd 0.8.0/0.8.2 (File Transfer Software). It has been declared as critical. Affected by this vulnerability is the function do_login_loop. 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 availability. The summary by CVE is:

Off-by-one error in the do_login_loop function in libwzd-core/wzd_login.c in wzdftpd 0.8.0, 0.8.2, and possibly other versions allows remote attackers to cause a denial of service (daemon crash) via a long USER command that triggers a stack-based buffer overflow. NOTE: some of these details are obtained from third party information.

The bug was discovered 10/07/2007. The weakness was disclosed 10/09/2007 by k1tk4t (Website). The advisory is shared at xforce.iss.net. This vulnerability is known as CVE-2007-5300 since 10/09/2007. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Technical details and also a public exploit are known.

A public exploit has been developed in Perl. It is possible to download the exploit at securityfocus.com. It is declared as proof-of-concept. The vulnerability was handled as a non-public zero-day exploit for at least 2 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 29861 (Debian DSA-1452-1 : wzdftpd - denial of service), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Debian Local Security Checks and running in the context l.

Upgrading eliminates this vulnerability. A possible mitigation has been published 4 months after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (37010), Tenable (29861) and Exploit-DB (4498).

Productinfo

Type

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 4.8

VulDB Base Score: 5.3
VulDB Temp Score: 4.8
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: 🔍

Local: No
Remote: Yes

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

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Dayunlockunlockunlockunlock
Todayunlockunlockunlockunlock

Nessus ID: 29861
Nessus Name: Debian DSA-1452-1 : wzdftpd - denial of service
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍
Nessus Port: 🔍

OpenVAS ID: 60107
OpenVAS Name: Debian Security Advisory DSA 1452-1 (wzdftpd)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Exploit-DB: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

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

Timelineinfo

10/07/2007 🔍
10/07/2007 +0 days 🔍
10/08/2007 +1 days 🔍
10/09/2007 +1 days 🔍
10/09/2007 +0 days 🔍
10/09/2007 +0 days 🔍
01/06/2008 +89 days 🔍
01/07/2008 +1 days 🔍
01/14/2008 +7 days 🔍
03/16/2015 +2618 days 🔍
08/03/2019 +1601 days 🔍

Sourcesinfo

Advisory: xforce.iss.net
Researcher: k1tk4t
Status: Not defined

CVE: CVE-2007-5300 (🔍)
OVAL: 🔍

X-Force: 37010
Vulnerability Center: 17349 - Wzdftpd Libwzd-core/wzd_login.c Error Allows Remote Attackers to Execute Arbitrary Code, Medium
SecurityFocus: 25967 - wzdftpd USER Command Remote Denial of Service Vulnerability
Secunia: 27091
OSVDB: 41636 - CVE-2007-5300 - wzdftpd - Denial-Of-Service Issue
Vupen: ADV-2007-3389

scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 03/16/2015 12:18
Updated: 08/03/2019 15:11
Changes: 03/16/2015 12:18 (77), 08/03/2019 15:11 (9)
Complete: 🔍

Discussion

No comments yet. Languages: en.

Please log in to comment.

◂ PreviousOverviewNext ▸

Do you need the next level of professionalism?

Upgrade your account now!