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Mageia: 2021-0229 Critical Update for Lz4 Integer Overflow Threat

mageia
Calendar Grey June 8, 2021
Dist Mageia Esm H88
Mageia 2022-0456 resolves a significant zlib vulnerability that could affect accessibility, reliability, and secrecy.
An attacker who submits a crafted file to an application linked with lz4 may be able to trigger an integer overflow, leading to calling of memmove() on a negative size argument, ca...

Summary

An attacker who submits a crafted file to an application linked with lz4 may be able to trigger an integer overflow, leading to calling of memmove() on a negative size argument, causing an out-of-bounds write and/or a crash. The greatest impact of this flaw is to availability, with some potential impact to confidentiality and integrity as well (CVE-2021-3520).

References

- https://bugs.mageia.org/show_bug.cgi?id=28990

- https://lists.debian.org/debian-security-announce/2021/msg00100.html

- https://ubuntu.com/security/notices/USN-4968-1

- https://www.cve.org/CVERecord?id=CVE-2021-3520

Topics%20covered

Topics Covered

security advisory integer overflow Mageia lz4 availability impact

Resolution

SRPMS

- 8/core/lz4-1.9.3-1.1.mga8

- 7/core/lz4-1.9.2-1.1.mga7

Severity
critical
Lowest
Low
Medium
High
Critical

Publication date: 08 Jun 2021
URL: https://advisories.mageia.org/MGASA-2021-0229.html
Type: security
CVE: CVE-2021-3520

Topics%20covered

Topics Covered

security advisory integer overflow Mageia lz4 availability impact

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