CVE-2021-43314: A heap-based buffer overflows was discovered in upx, during the generic pointer 'p' points to an inaccessible address in func get_le32(). The problem is…

PriorityP335high7.5CVSS 3.1

AVNACLPRNUINSUCNINAH

EPSS

0.82%

52.5th percentile

A heap-based buffer overflows was discovered in upx, during the generic pointer 'p' points to an inaccessible address in func get_le32(). The problem is essentially caused in PackLinuxElf32::elf_lookup() at p_lx_elf.cpp:5368

Affected

3 ranges

Vendor	Product	Version range	Fixed in
debian	upx-ucl	< upx-ucl 4.2.2-1 (forky)	upx-ucl 4.2.2-1 (forky)
upx	upx	< 4.0.0	4.0.0
upx	upx	—	—

CVSS provenance

nvdv3.17.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

osv7.5HIGH

vendor_debian7.5LOW

Stop checking back — get the weekly exploitation signal.

Every Monday: what got weaponized or added to CISA KEV in the last seven days — each CVE cross-linked to its PoC, Nuclei template, and detection rule. Free, one email a week, unsubscribe in one click.