high
8.8
CWE
415
Advisory Published
Updated

CVE-2019-20393: Double Free

First published: Wed Jan 22 2020(Updated: )

A double-free is present in libyang before v1.0-r1 in the function yyparse() when an empty description is used. Applications that use libyang to parse untrusted input yang files may be vulnerable to this flaw, which would cause a crash or potentially code execution.

Credit: cve@mitre.org cve@mitre.org

Affected SoftwareAffected VersionHow to fix
redhat/libyang<1.0
1.0
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

Remedy

https://bugzilla.redhat.com/show_bug.cgi?id=1793930

Remedy

https://github.com/CESNET/libyang/commit/d9feacc4a590d35dbc1af21caf9080008b4450ed

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