Vulnerability · Published Aug 22, 2023 · Assigned by mitre
CVE-2020-21047
Medium 5.5
In plain English
A medium-severity security flaw in the elfutils package (Debian). Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 17% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS NVD)5.5Medium
Exploit odds (30 days)0.3%top 83.4% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official 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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | elfutils | 0.180-1 | DEBIAN-CVE-2020-21047 |
| Debian:13 | elfutils | 0.180-1 | DEBIAN-CVE-2020-21047 |
| Debian:14 | elfutils | 0.180-1 | DEBIAN-CVE-2020-21047 |
Affected products (as reported)
References
- https://sourceware.org/bugzilla/show_bug.cgi?id=25068
- https://sourceware.org/git/?p=elfutils.git%3Ba=commitdiff%3Bh=99dc63b10b3878616b85df2dfd2e4e7103e414b8
- [debian-lts-announce] 20230923 [SECURITY] [DLA 3579-1] elfutils security update mailing-list
- https://cert-portal.siemens.com/productcert/html/ssa-398330.html
- https://cert-portal.siemens.com/productcert/html/ssa-202008.html