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CVE-2019-20396

Good to know:

Date: January 21, 2020

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.

Language: C

Severity Score

6.5

Related Resources (9)

Url: https://nvd.nist.gov/vuln/detail/CVE-2019-20396

Url: https://github.com/CESNET/libyang/commit/a1f17693904ed6fecc8902c747fc50a8f20e6af8

Url: https://access.redhat.com/security/cve/CVE-2019-20396

Url: https://lists.debian.org/debian-lts-announce/2023/09/msg00019.html

Url: https://people.canonical.com/~ubuntu-security/cve/CVE-2019-20396

Url: https://github.com/CESNET/libyang/compare/v0.16-r3...v1.0-r1

Url: https://github.com/CESNET/libyang/issues/740

Url: https://security-tracker.debian.org/tracker/CVE-2019-20396

Url: https://www.mend.io/vulnerability-database/CVE-2019-20396

Severity Score

6.5

Weakness Type (CWE)

Improper Restriction of Operations within the Bounds of a Memory Buffer

CWE-119

Improper Input Validation

CWE-20

CVSS v3.1

Base Score:	6.5
Attack Vector (AV):	NETWORK
Attack Complexity (AC):	LOW
Privileges Required (PR):	NONE
User Interaction (UI):	REQUIRED
Scope (S):	UNCHANGED
Confidentiality (C):	NONE
Integrity (I):	NONE
Availability (A):	HIGH

CVSS v2

Base Score:	4.3
Access Vector (AV):	NETWORK
Access Complexity (AC):	MEDIUM
Authentication (AU):	NONE
Confidentiality (C):	NONE
Integrity (I):	NONE
Availability (A):	PARTIAL
Additional information:

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