CVE-2020-21047
Publication date 22 August 2023
Last updated 25 August 2025
Ubuntu priority
Description
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.
Status
| Package | Ubuntu Release | Status |
|---|---|---|
| elfutils | ||
| 22.04 LTS jammy |
Not affected
|
|
| 20.04 LTS focal |
Fixed 0.176-1.1ubuntu0.1
|
|
| 18.04 LTS bionic |
Fixed 0.170-0.4ubuntu0.1+esm1
|
|
| 16.04 LTS xenial |
Fixed 0.165-3ubuntu1.2+esm1
|
|
| 14.04 LTS trusty |
Fixed 0.158-0ubuntu5.3+esm1
|
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| Package | Patch details |
|---|---|
| elfutils |
Severity score breakdown
CVSS version: CVSS v3.0
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
References
Related Ubuntu Security Notices (USN)
- USN-6322-1
- elfutils vulnerabilities
- 30 August 2023