Rarlab WinRAR 5.7 Expiration mshtml.dll injection

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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5.1$0-$5k0.00

Summaryinfo

A vulnerability marked as problematic has been reported in Rarlab WinRAR 5.7. This vulnerability affects unknown code in the library mshtml.dll of the component Expiration Handler. This manipulation causes injection. This vulnerability is registered as CVE-2021-35052. Remote exploitation of the attack is possible. Furthermore, an exploit is available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability was found in Rarlab WinRAR 5.7 (File Compression Software). It has been declared as problematic. Affected by this vulnerability is an unknown code in the library mshtml.dll of the component Expiration Handler. The manipulation with an unknown input leads to a injection vulnerability. The CWE definition for the vulnerability is CWE-74. The product constructs all or part of a command, data structure, or record using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify how it is parsed or interpreted when it is sent to a downstream component. As an impact it is known to affect confidentiality, integrity, and availability.

The weakness was published 11/23/2021 by Igor Sak-Sakovskiy as WinRAR’s vulnerable trialware: when free software isn’t free. It is possible to read the advisory at swarm.ptsecurity.com. This vulnerability is known as CVE-2021-35052 since 06/18/2021. Technical details and also a public exploit are known. The attack technique deployed by this issue is T1055 according to MITRE ATT&CK.

It is possible to download the exploit at swarm.ptsecurity.com. It is declared as proof-of-concept.

Upgrading to version 6.02 eliminates this vulnerability.

Be aware that VulDB is the high quality 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: 5.6
VulDB Meta Temp Score: 5.1

VulDB Base Score: 5.6
VulDB Temp Score: 5.1
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: Injection
CWE: CWE-74 / CWE-707 / CWE-20
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: 🔍

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: WinRAR 6.02

Timelineinfo

06/18/2021 🔍
11/23/2021 +158 days 🔍
11/23/2021 +0 days 🔍
11/27/2021 +4 days 🔍

Sourcesinfo

Advisory: WinRAR’s vulnerable trialware: when free software isn’t free
Researcher: Igor Sak-Sakovskiy
Status: Confirmed

CVE: CVE-2021-35052 (🔍)
GCVE (CVE): GCVE-0-2021-35052
GCVE (VulDB): GCVE-100-187135
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 11/23/2021 09:50
Updated: 11/27/2021 08:14
Changes: 11/23/2021 09:50 (45), 11/27/2021 08:14 (1)
Complete: 🔍
Submitter: CSieberg
Cache ID: 216::103

Submitinfo

Accepted

  • Submit #24625: CVE-2021-35052 - Remote Code Execution in WinRAR (by CSieberg)

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

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