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CVE-2023-31102

7.8 · HIGH

Ppmd7.c in 7-Zip before 23.00 allows an integer underflow and invalid read operation via a crafted 7Z archive.

Published Nov 3, 2023CWE-191EPSS 55.21%

Overview

CVE-2023-31102 is a high-severity vulnerability. It was published on November 3, 2023 and has a CVSS 3.1 base score of 7.8 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.8, rated HIGH. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

Technical description

Ppmd7.c in 7-Zip before 23.00 allows an integer underflow and invalid read operation via a crafted 7Z archive.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refds-security.com/post/integer-overflow-in-7-zip-cve-2023-31102/Refsecurity.netapp.com/advisory/ntap-20231110-0007/Refsourceforge.net/p/sevenzip/discussion/45797/thread/713c8a8269/Refwww.7-zip.org/download.htmlRefwww.zerodayinitiative.com/advisories/ZDI-23-1165/Refds-security.com/post/integer-overflow-in-7-zip-cve-2023-31102/Refsecurity.netapp.com/advisory/ntap-20231110-0007/Refsourceforge.net/p/sevenzip/discussion/45797/thread/713c8a8269/Refwww.7-zip.org/download.htmlRefwww.zerodayinitiative.com/advisories/ZDI-23-1165/

How CyberStrike helps

Frequently asked questions

What is CVE-2023-31102?

CVE-2023-31102 is a high-severity vulnerability. It was published on November 3, 2023 and has a CVSS 3.1 base score of 7.8 (HIGH).

How severe is CVE-2023-31102?

This vulnerability has a CVSS 3.1 base score of 7.8, rated HIGH. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2023-31102?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2023-31102?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2023-31102 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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