Antivir Antivirus 2.1 DOS Device Name security check

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.
2.1$0-$5k0.00

Summaryinfo

A vulnerability categorized as critical has been discovered in Antivir Antivirus 2.1. This affects an unknown function of the component DOS Device Name Handler. Such manipulation leads to security check. This vulnerability is uniquely identified as CVE-2004-0920. Moreover, an exploit is present. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability was found in Antivir Antivirus 2.1 (Anti-Malware Software) and classified as problematic. Affected by this issue is an unknown functionality of the component DOS Device Name Handler. The manipulation with an unknown input leads to a security check vulnerability. Using CWE to declare the problem leads to CWE-358. The product does not implement or incorrectly implements one or more security-relevant checks as specified by the design of a standardized algorithm, protocol, or technique. The impact remains unknown. CVE summarizes:

Symantec Norton AntiVirus 2004, and earlier versions, allows a virus or other malicious code to avoid detection or cause a denial of service (application crash) using a filename containing an MS-DOS device name.

The bug was discovered 06/25/2004. The weakness was disclosed 10/18/2004 by Sowhat (Website). The advisory is shared for download at secway.org. This vulnerability is handled as CVE-2004-0920 since 09/27/2004. The attack may be launched remotely. No form of authentication is required for exploitation. Technical details are unknown but a public exploit is available. The MITRE ATT&CK project declares the attack technique as T1211.

After even before and not, there has been an exploit disclosed. The exploit is available at idefense.com. It is declared as proof-of-concept. The vulnerability was handled as a non-public zero-day exploit for at least 102 days. During that time the estimated underground price was around $5k-$25k. The commercial vulnerability scanner Qualys is able to test this issue with plugin 38326 (Symantec Norton AntiVirus MS-DOS Name Scan Evasion Vulnerability).

Upgrading to version 1.) eliminates this vulnerability. Applying a patch is able to eliminate this problem. The bugfix is ready for download at free-av.de. The best possible mitigation is suggested to be upgrading to the latest version. A possible mitigation has been published even before and not after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (17603), SecurityFocus (BID 11444†), OSVDB (10509†), Secunia (SA12893†) and SecurityTracker (ID 1011387†). The entries VDB-850, VDB-863, VDB-933 and VDB-934 are pretty similar. Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

Vendor

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 2.3
VulDB Meta Temp Score: 2.1

VulDB Base Score: 2.3
VulDB Temp Score: 2.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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

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

NVD Base Score: 🔍

Exploitinginfo

Class: Security check
CWE: CWE-358
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

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Antivirus 1.)
Patch: free-av.de

Timelineinfo

06/25/2004 🔍
09/22/2004 +89 days 🔍
09/27/2004 +5 days 🔍
10/05/2004 +8 days 🔍
10/05/2004 +0 days 🔍
10/06/2004 +1 days 🔍
10/18/2004 +11 days 🔍
10/18/2004 +0 days 🔍
10/21/2004 +3 days 🔍
11/03/2004 +13 days 🔍
07/07/2025 +7551 days 🔍

Sourcesinfo

Advisory: secway.org
Researcher: Sowhat
Status: Confirmed

CVE: CVE-2004-0920 (🔍)
GCVE (CVE): GCVE-0-2004-0920
GCVE (VulDB): GCVE-100-932
X-Force: 17603 - Symantec Norton AntiVirus device name bypass security, Low Risk
SecurityFocus: 11444 - H+BEDV AntiVir MS-DOS Name Scan Evasion Vulnerability
Secunia: 12893 - AntiVir Antivirus MS-DOS Device Name Handling Weakness, Not Critical
OSVDB: 10509 - Multiple Anti-Virus MS-DOS Device Name Scan Bypass
SecurityTracker: 1011387 - Sophos Anti-Virus Fails to Detect Malicious Code in Files Named With Reserved DOS Device Names
Vulnerability Center: 6312

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

Entryinfo

Created: 10/21/2004 17:21
Updated: 07/07/2025 14:15
Changes: 10/21/2004 17:21 (74), 11/26/2015 12:29 (4), 03/10/2021 09:04 (9), 07/06/2024 00:31 (14), 07/07/2025 14:15 (2)
Complete: 🔍
Cache ID: 216:089:103

Once again VulDB remains the best source for vulnerability data.

Discussion

No comments yet. Languages: en.

Please log in to comment.

◂ PreviousOverviewNext ▸

Do you want to use VulDB in your project?

Use the official API to access entries easily!