VDB-154172 · CVE-2020-8099 · GCVE-0-2020-8099

BitDefender Antivirus Free up to 1.0.16 Quarantine link following

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.
7.0	$0-$5k	0.00

Summaryinfo

A vulnerability was found in BitDefender Antivirus Free up to 1.0.16 and classified as critical. The impacted element is an unknown function of the component Quarantine Handler. Such manipulation leads to link following. This vulnerability is uniquely identified as CVE-2020-8099. The attack can be executed directly on the physical device. No exploit exists. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as critical, has been found in BitDefender Antivirus Free up to 1.0.16 (Anti-Malware Software). Affected by this issue is an unknown code of the component Quarantine Handler. The manipulation with an unknown input leads to a link following vulnerability. Using CWE to declare the problem leads to CWE-59. The product attempts to access a file based on the filename, but it does not properly prevent that filename from identifying a link or shortcut that resolves to an unintended resource. Impacted is confidentiality, integrity, and availability. CVE summarizes:

A vulnerability in the improper handling of junctions in Bitdefender Antivirus Free can allow an unprivileged user to substitute a quarantined file, and restore it to a privileged location. This issue affects: Bitdefender Antivirus Free versions prior to 1.0.17.

The weakness was disclosed 04/21/2020. This vulnerability is handled as CVE-2020-8099 since 01/28/2020. The attack needs to be approached locally. A simple authentication is needed for exploitation. Successful exploitation requires user interaction by the victim. There are neither technical details nor an exploit publicly available.

Upgrading to version 1.0.17 eliminates this vulnerability.

Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

Anti-Malware Software

Vendor

BitDefender

Name

Antivirus Free

Version

License

commercial

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.1
VulDB Meta Temp Score: 7.0

VulDB Base Score: 7.1
VulDB Temp Score: 6.8
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.1
NVD Vector: 🔍

CNA Base Score: 7.1
CNA Vector (Bitdefender): 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

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

NVD Base Score: 🔍

Exploitinginfo

Class: Link following
CWE: CWE-59
CAPEC: 🔍
ATT&CK: 🔍

Physical: Yes
Local: Yes
Remote: Partially

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Antivirus Free 1.0.17

Timelineinfo

01/28/2020 🔍
04/21/2020 +84 days 🔍
04/22/2020 +1 days 🔍
05/06/2025 +1840 days 🔍

Sourcesinfo

Advisory: bitdefender.com
Status: Confirmed

CVE: CVE-2020-8099 (🔍)
GCVE (CVE): GCVE-0-2020-8099
GCVE (VulDB): GCVE-100-154172

Entryinfo

Created: 04/22/2020 10:47
Updated: 05/06/2025 15:44
Changes: 04/22/2020 10:47 (37), 04/22/2020 10:52 (12), 10/11/2020 06:45 (1), 06/01/2024 12:34 (17), 06/01/2024 12:42 (17), 05/06/2025 15:44 (3)
Complete: 🔍
Cache ID: 216::103