CVE-2021-43311
7.5
HIGH
CVSS 3.1
EPSS 0.35%
Description
A heap-based buffer overflow 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:5382.
How to fix CVE-2021-43311
No fixed version has been published yet. Mitigate by removing the affected package or applying upstream guidance from the references below.
- Debian/upx-ucl—no fix listed
Is CVE-2021-43311 being exploited?
Low — EPSS is 0.3%, meaning exploitation activity has not been observed at scale.
Affected packages (1)
- from 0
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |