Backdoor.Win32.Agent.afq UberWWW msvcrt.dll heap-based overflow

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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6.7$0-$5k0.00

Summaryinfo

A vulnerability was found in Backdoor.Win32.Agent.afq. It has been rated as critical. This issue affects some unknown processing in the library msvcrt.dll of the component UberWWW. The manipulation leads to heap-based overflow. The attack is possible to be carried out remotely. Moreover, an exploit is present. It is recommended to apply restrictive firewalling.

Detailsinfo

A vulnerability was found in Backdoor.Win32.Agent.afq (Remote Access Software) (version unknown). It has been rated as critical. This issue affects an unknown function in the library msvcrt.dll of the component UberWWW. The manipulation with an unknown input leads to a heap-based overflow vulnerability. Using CWE to declare the problem leads to CWE-122. A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc(). Impacted is confidentiality, integrity, and availability.

The weakness was disclosed 04/28/2021 as MVID-2021-0190. It is possible to read the advisory at malvuln.com. Technical details as well as a public exploit are known.

The exploit is available at malvuln.com. It is declared as proof-of-concept.

Addressing this vulnerability is possible by firewalling .

Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Type

Name

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.3
VulDB Meta Temp Score: 6.7

VulDB Base Score: 7.3
VulDB Temp Score: 6.7
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Heap-based overflow
CWE: CWE-122 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Download: 🔍
Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Firewall
Status: 🔍

0-Day Time: 🔍

Timelineinfo

04/28/2021 🔍
04/28/2021 +0 days 🔍
04/28/2021 +0 days 🔍

Sourcesinfo

Advisory: MVID-2021-0190
Status: Not defined

GCVE (VulDB): GCVE-100-174167
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 04/28/2021 06:26
Changes: 04/28/2021 06:26 (40)
Complete: 🔍
Submitter: malvuln
Cache ID: 216::103

Submitinfo

Accepted

  • Submit #11920: BACKDOOR.WIN32.AGENT.AFQ / Remote Heap Corruption (by malvuln)

Be aware that VulDB is the high quality source for vulnerability data.

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