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6.5
CVSSv3

CVE-2019-20398

Published: 22/01/2020 Updated: 19/09/2023
CVSS v2 Base Score: 4.3 | Impact Score: 2.9 | Exploitability Score: 8.6
CVSS v3 Base Score: 6.5 | Impact Score: 3.6 | Exploitability Score: 2.8
VMScore: 383
Vector: AV:N/AC:M/Au:N/C:N/I:N/A:P
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Vulnerability Summary

A NULL pointer dereference is present in libyang before v1.0-r3 in the function lys_extension_instances_free() due to a copy of unresolved extensions in lys_restr_dup(). Applications that use libyang to parse untrusted input yang files may crash.

Vulnerability Trend

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cesnet libyang 1.0

cesnet libyang 0.16

cesnet libyang 0.13

cesnet libyang 0.12

cesnet libyang 0.11

cesnet libyang 0.14

cesnet libyang 0.15

References

CWE-476https://github.com/CESNET/libyang/commit/7852b272ef77f8098c35deea6c6f09cb78176f08https://bugzilla.redhat.com/show_bug.cgi?id=1793935https://github.com/CESNET/libyang/compare/v1.0-r2...v1.0-r3https://github.com/CESNET/libyang/issues/773https://lists.debian.org/debian-lts-announce/2023/09/msg00019.htmlhttps://nvd.nist.gov
CVSSv3
CVSSv2
CVSSv3
VMScore
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