CVE-2020-24821 json
A vulnerability in the dwarf::cursor::skip_form function of Libelfin v0.3 allows attackers to cause a denial of service (DOS) through a seg…
published 2021-08-04 5 y ago modified 2026-06-17 4 mo ago also EUVD-2020-17530
- cvss
- 5.5
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.7%
- EPSS 0.7% chance of exploitation in 30 days, percentile 52%
- public exploits
- 0
- none known
Summary
A vulnerability in the dwarf::cursor::skip_form function of Libelfin v0.3 allows attackers to cause a denial of service (DOS) through a segmentation fault via a crafted ELF file.
Exploit prediction
0.69% chance of exploitation in the next 30 days, higher than 52% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- github.com https://github.com/aclements/libelfin/issues/52 referenced PoC, tagged "exploit" by a source, unverified
- github.com https://github.com/xiaoxiongwang/function_bugs/tree/master/libelfin#segv-in-function-dwarfcursorskip_form-at-dwarfcursorcc191 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 5.5 | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H |
| NVD | 2.0 | 4.3 | AV:N/AC:M/Au:N/C:N/I:N/A:P |
Classification
- Weakness
-
- CWE-74 Improper Neutralization of Special Elements in Output Used by a Downstream Component
References
-
github.com
/aclements/libelfin/issues/52
exploit, issue-tracking, third-party-advisory
-
github.com
/xiaoxiongwang/function_bugs/tree/master/libelfin#segv-in-function-dwarfcursorskip_form-at-dwarfcursorcc191
exploit, third-party-advisory
Sources
- CVE List CVE-2020-24821
- NVD CVE-2020-24821
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