CVE-2019-20396 — MEDIUM (6.5)

Vulnerability Description

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.

CVSS Score

6.5

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality

NONE

Integrity

NONE

Availability

HIGH

Affected Products

Vendor	Product	Versions
Cesnet	Libyang	0.11

Related Weaknesses (CWE)

CWE-119

References

https://github.com/CESNET/libyang/commit/a1f17693904ed6fecc8902c747fc50a8f20e6afPatchThird Party Advisory
https://github.com/CESNET/libyang/compare/v0.16-r3...v1.0-r1Third Party Advisory
https://github.com/CESNET/libyang/issues/740ExploitThird Party Advisory
https://lists.debian.org/debian-lts-announce/2023/09/msg00019.html
https://github.com/CESNET/libyang/commit/a1f17693904ed6fecc8902c747fc50a8f20e6afPatchThird Party Advisory
https://github.com/CESNET/libyang/compare/v0.16-r3...v1.0-r1Third Party Advisory
https://github.com/CESNET/libyang/issues/740ExploitThird Party Advisory
https://lists.debian.org/debian-lts-announce/2023/09/msg00019.html

FAQ

What is CVE-2019-20396?

CVE-2019-20396 is a vulnerability with a CVSS score of 6.5 (MEDIUM). 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.

How severe is CVE-2019-20396?

CVE-2019-20396 has been rated MEDIUM with a CVSS base score of 6.5/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2019-20396?

Check the references section above for vendor advisories and patch information. Affected products include: Cesnet Libyang.