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Mageia 7 Security Advisory: MGASA-2021-0305 Critical p7zip Crash

mageia
Calendar Grey June 30, 2021
Dist Mageia Esm H88
MGASA-2021-0306 upgrades p7zip to address vulnerabilities, resolving crashes linked to null pointer dereference issues.
In p7zip-17.03, the function NCompress::CCopyCoder::Code in CPP/7zip/Common/StreamObjects.cpp will call outStream->Write where a memcpy uses a NULL pointer as destination address, ...

Summary

In p7zip-17.03, the function NCompress::CCopyCoder::Code in CPP/7zip/Common/StreamObjects.cpp will call outStream->Write where a memcpy uses a NULL pointer as destination address, leading to a crash (CVE-2021-3465).
Null pointer dereference in function Reserve() found in p7zip 16.02 (rhbz#1951218).
Null Pointer Dereference in function NArchive::NLzh::CItem::GetUnixTime found in p7zip 16.02 (rhbz#1951224).
The p7zip package has been patched to fix these issues.
Also, the Mageia 7 package has been updated to version 17.03.

References

- https://bugs.mageia.org/show_bug.cgi?id=28903

- https://github.com/jinfeihan57/p7zip/releases

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- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/thread/OJQ6YRT2OALFI2LGZSLJD5T74MV6PJ7V/

- https://www.cve.org/CVERecord?id=CVE-2021-3465

Resolution

SRPMS

- 8/core/p7zip-17.03-1.1.mga8

- 7/core/p7zip-17.03-1.1.mga7

Severity
critical
Lowest
Low
Medium
High
Critical

Publication date: 30 Jun 2021
URL: https://advisories.mageia.org/MGASA-2021-0305.html
Type: security
CVE: CVE-2021-3465

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