Summaryinfo

A vulnerability was found in RARLabs WinRAR up to 6.22 and classified as critical. This vulnerability affects unknown code of the component ZIP Archive Handler. Such manipulation leads to an unknown weakness. This vulnerability is listed as CVE-2023-38831. The attack may be performed from remote. In addition, an exploit is available. It is suggested to upgrade the affected component. If you want to get best quality of vulnerability data, you may have to visit VulDB.

Detailsinfo

A vulnerability was found in RARLabs WinRAR up to 6.22 (File Compression Software). It has been rated as critical. Affected by this issue is an unknown code of the component ZIP Archive Handler. Using CWE to declare the problem leads to CWE-345. The product does not sufficiently verify the origin or authenticity of data, in a way that causes it to accept invalid data. Impacted is confidentiality, integrity, and availability. CVE summarizes:

RARLAB WinRAR before 6.23 allows attackers to execute arbitrary code when a user attempts to view a benign file within a ZIP archive. The issue occurs because a ZIP archive may include a benign file (such as an ordinary .JPG file) and also a folder that has the same name as the benign file, and the contents of the folder (which may include executable content) are processed during an attempt to access only the benign file. This was exploited in the wild in April through October 2023.

The weakness was presented 08/23/2023. The advisory is available at group-ib.com. This vulnerability is handled as CVE-2023-38831 since 07/25/2023. Successful exploitation requires user interaction by the victim. Technical details are unknown but a public exploit is available.

The exploit is available at bleepingcomputer.com. It is declared as attacked. This issue was added on 08/24/2023 to the CISA Known Exploited Vulnerabilities Catalog with a due date of 09/14/2023:

Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

Upgrading to version 6.23 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at Zero-Day.cz (802). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Type

• File Compression Software

Vendor

• RARLabs

Name

• WinRAR

Version

• 6.0
• 6.1
• 6.2
• 6.3
• 6.4
• 6.5
• 6.6
• 6.7
• 6.8
• 6.9
• 6.10
• 6.11
• 6.12
• 6.13
• 6.14
• 6.15
• 6.16
• 6.17
• 6.18
• 6.19
• 6.20
• 6.21
• 6.22

CPE 2.3info

• 🔍
• 🔍
• 🔍

CPE 2.2info

• 🔍
• 🔍
• 🔍

CVSSv4info

CVSSv3info

CVSSv2info

Exploitinginfo

Threat Intelligenceinfo

Countermeasuresinfo

Timelineinfo

Sourcesinfo

Entryinfo

Discussion