What is CVE-2020-21047?

CVE-2020-21047 is a medium-severity vulnerability in Elfutils Project, classified under Out-of-bounds Write. CVSS score: 5.5/10. Published 2023-08-22.

How severe is CVE-2020-21047?

Medium severity. CVSS v3 base score is 5.5 out of 10.

Buffer overflow in Elfutils Project

CVE-2020-21047

The libcpu component which is used by libasm of elfutils version 0.177 (git 47780c9e), suffers from denial-of-service vulnerability caused by application crashes due to out-of-bounds write (CWE-787), off-by-one error (CWE-193) and reachable assertion (CWE-617); to exploit the vulnerability, the attackers need to craft certain ELF files which bypass the missing bound checks.

Vulnerability class: Buffer Overflow

EPSS: 0.002 (13.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H.

Affected products

Elfutils_project Elfutils — versions 0.177
N/a — versions n/a

Weakness classification (CWE)

CWE-787 — Out-of-bounds Write

References

cve@mitre.org (Issue Tracking)
cve@mitre.org
cve@mitre.org (mailing-list)

Frequently asked questions

What is CVE-2020-21047?: CVE-2020-21047 is a medium-severity vulnerability in Elfutils Project, classified under Out-of-bounds Write. CVSS score: 5.5/10. Published 2023-08-22.
How severe is CVE-2020-21047?: Medium severity. CVSS v3 base score is 5.5 out of 10.