CVE-2020-21047: Medium severity Elfutils Project Elfutils vulnerability
Last updated 24 July 2024
Other sources
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.
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
debian/elfutilsto a version that resolves this vulnerability.Fixed in 0.183-1Fixed in 0.188-2.1Fixed in 0.192-4
Event History
Frequently Asked Questions
What is the severity of CVE-2020-21047?
CVE-2020-21047 has a severity rating related to denial-of-service due to application crashes.
How do I fix CVE-2020-21047?
To fix CVE-2020-21047, upgrade to elfutils version 0.183-1, 0.188-2.1, or 0.192-4.
Which versions of elfutils are affected by CVE-2020-21047?
Versions of elfutils prior to 0.183-1, including 0.177, are affected by CVE-2020-21047.
What types of vulnerabilities are associated with CVE-2020-21047?
CVE-2020-21047 is associated with out-of-bounds write, off-by-one error, and reachable assertion vulnerabilities.
Is there a known exploit for CVE-2020-21047?
While there are indications of a denial-of-service risk, there is no public exploit specifically documented for CVE-2020-21047.