What is CVE-2021-20285?

CVE-2021-20285 is a medium-severity vulnerability in Upx, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 6.6/10. Published 2021-03-26.

How severe is CVE-2021-20285?

Medium severity. CVSS v3 base score is 6.6 out of 10.

Buffer overflow in Upx

CVE-2021-20285

A flaw was found in upx canPack in p_lx_elf.cpp in UPX 3.96. This flaw allows attackers to cause a denial of service (SEGV or buffer overflow and application crash) or possibly have unspecified other impacts via a crafted ELF. The highest threat from this vulnerability is to system availability.

Vulnerability class: Buffer Overflow

EPSS: 0.008 (51.3th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.6 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:H.

Affected products

Upx — versions 3.96
N/a Upx — versions UPX 3.96

Weakness classification (CWE)

References

secalert@redhat.com (Exploit, Third Party Advisory, x_refsource_MISC, Issue Tracking)
secalert@redhat.com (Third Party Advisory, x_refsource_MISC, Issue Tracking)

Frequently asked questions

What is CVE-2021-20285?: CVE-2021-20285 is a medium-severity vulnerability in Upx, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 6.6/10. Published 2021-03-26.
How severe is CVE-2021-20285?: Medium severity. CVSS v3 base score is 6.6 out of 10.