CVE-2021-3520

lz4: memory corruption due to an integer overflow bug caused by memmove argument

Published Jun 2, 2021 CVSS 3.1 · 9.8 Critical EPSS 3.4% KEV · Not listed
Description
There's a flaw in lz4. 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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
Debian DLA Debian DLA DLA-2657-1 lz4 security update
Debian DSA Debian DSA DSA-4919-1 lz4 security update
Ubuntu USN Ubuntu USN USN-4968-1 LZ4 vulnerability
Ubuntu USN Ubuntu USN USN-4968-2 LZ4 vulnerability
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}