CVE-2023-40481
7-Zip SquashFS File Parsing Out-Of-Bounds Write Remote Code Execution Vulnerability.
Does this matter?
EPSS puts the probability of exploitation in the next 30 days at 13.9%, higher than 96% of all known CVEs. Patch or mitigate before the next change window.
Description
7-Zip SquashFS File Parsing Out-Of-Bounds Write Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of 7-Zip. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The specific flaw exists within the parsing of SQFS files. The issue results from the lack of proper validation of user-supplied data, which can result in a write past the end of an allocated buffer. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-18589.
- CVSS 3.0
- 7.8 HIGHCVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- EPSS
- 13.95% probability · 96th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-787
- Affected
- 7-zip/7-zip
- Source
- zdi-disclosures@trendmicro.com
References
- https://sourceforge.net/p/sevenzip/discussion/45797/thread/713c8a8269/Product, Release Notes
- https://www.zerodayinitiative.com/advisories/ZDI-23-1164/Third Party Advisory
- https://sourceforge.net/p/sevenzip/discussion/45797/thread/713c8a8269/Product, Release Notes
- https://www.zerodayinitiative.com/advisories/ZDI-23-1164/Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.