CVE-2019-20396: Buffer Overflow
First published: Wed Jan 22 2020(Updated: )
A segmentation fault is present in yyparse in libyang before v1.0-r1 due to a malformed pattern statement value during lys_parse_path parsing.
Credit: cve@mitre.org cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| CESNET libyang | =0.11-r1 | |
| CESNET libyang | =0.11-r2 | |
| CESNET libyang | =0.12-r1 | |
| CESNET libyang | =0.12-r2 | |
| CESNET libyang | =0.13-r1 | |
| CESNET libyang | =0.13-r2 | |
| CESNET libyang | =0.14-r1 | |
| CESNET libyang | =0.15-r1 | |
| CESNET libyang | =0.16-r1 | |
| CESNET libyang | =0.16-r2 | |
| CESNET libyang | =0.16-r3 |
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Reference Links
Frequently Asked Questions
What is the severity of CVE-2019-20396?
CVE-2019-20396 has been classified with a high severity due to the potential for denial of service resulting from a segmentation fault.
How do I fix CVE-2019-20396?
To fix CVE-2019-20396, update libyang to version 1.0-r1 or later where the vulnerability is addressed.
What software is affected by CVE-2019-20396?
CVE-2019-20396 affects multiple versions of libyang including 0.11-r1 through 0.16-r3.
What type of vulnerability is CVE-2019-20396?
CVE-2019-20396 is a denial of service vulnerability caused by a segmentation fault in the parsing function.
Can CVE-2019-20396 be exploited remotely?
Yes, CVE-2019-20396 can be exploited remotely by sending a malformed pattern statement value that triggers the segmentation fault.
- agent/references
- agent/author
- agent/type
- agent/softwarecombine
- collector/mitre-cve
- source/MITRE
- agent/last-modified-date
- agent/weakness
- agent/remedy
- agent/severity
- agent/event
- agent/first-publish-date
- agent/description
- agent/source
- agent/tags
- collector/nvd-index
- agent/software-canonical-lookup-request
- collector/nvd-api
- vendor/cesnet
- canonical/cesnet libyang
- version/cesnet libyang/0.11-r1
- version/cesnet libyang/0.11-r2
- version/cesnet libyang/0.12-r1
- version/cesnet libyang/0.12-r2
- version/cesnet libyang/0.13-r1
- version/cesnet libyang/0.13-r2
- version/cesnet libyang/0.14-r1
- version/cesnet libyang/0.15-r1
- version/cesnet libyang/0.16-r1
- version/cesnet libyang/0.16-r2
- version/cesnet libyang/0.16-r3