CVE-2020-23921
HIGHCVSS 7.1/10EPSS 0.91%
Last modified
CVE-2020-23921 is a high-severity vulnerability rated 7.1/10 on the CVSS scale. An issue was discovered in fast_ber through v0.4. yy::yylex() in asn_compiler.hpp has a heap-based buffer over-read.. EPSS estimates a 0.91% chance of exploitation in the next 30 days.
Description
An issue was discovered in fast_ber through v0.4. yy::yylex() in asn_compiler.hpp has a heap-based buffer over-read.
Metrics
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Fast Ber Project | Fast Ber | <= 0.4 |
References
- https://cwe.mitre.org/data/definitions/126.htmlTechnical Description
- https://github.com/Samuel-Tyler/fast_ber/issues/30Exploit, Third Party Advisory
- https://cwe.mitre.org/data/definitions/126.htmlTechnical Description
- https://github.com/Samuel-Tyler/fast_ber/issues/30Exploit, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2020-23921?
An issue was discovered in fast_ber through v0.4. yy::yylex() in asn_compiler.hpp has a heap-based buffer over-read.
How severe is CVE-2020-23921?
CVE-2020-23921 has a CVSS score of 7.1/10 (HIGH severity). The EPSS model estimates a 0.91% probability of exploitation in the next 30 days.
How do I fix CVE-2020-23921?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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Are you affected by CVE-2020-23921?
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Scan your code nowSource: NVD / NIST