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CVE-2019-20391 Details

Description

An invalid memory access flaw is present in libyang before v1.0-r3 in the function resolve_feature_value() when an if-feature statement is used inside a bit. Applications that use libyang to parse untrusted input yang files may crash.

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:6.5 MEDIUMVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://bugzilla.redhat.com/show_bug.cgi?id=1793934	CVE	Issue TrackingPatchThird Party Advisory
https://github.com/CESNET/libyang/commit/bdb596ddc07596fa212f231135b87d0b9178f6f8	CVE	PatchThird Party Advisory
https://github.com/CESNET/libyang/compare/v1.0-r2...v1.0-r3	CVE	Third Party Advisory
https://github.com/CESNET/libyang/issues/772	CVE	ExploitThird Party Advisory
https://lists.debian.org/debian-lts-announce/2023/09/msg00019.html	CVE
https://bugzilla.redhat.com/show_bug.cgi?id=1793934	[email protected]	Issue TrackingPatchThird Party Advisory
https://github.com/CESNET/libyang/commit/bdb596ddc07596fa212f231135b87d0b9178f6f8	[email protected]	PatchThird Party Advisory
https://github.com/CESNET/libyang/compare/v1.0-r2...v1.0-r3	[email protected]	Third Party Advisory
https://github.com/CESNET/libyang/issues/772	[email protected]	ExploitThird Party Advisory
https://lists.debian.org/debian-lts-announce/2023/09/msg00019.html	[email protected]

see all 10 references

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-119	Improper Restriction of Operations within the Bounds of a Memory Buffer	[email protected]

Affected Products

Product	Versions
cesnet libyang	0.11 r1 0.11 r2 0.12 r1 0.12 r2 0.13 r1
CPE cpe:2.3:a:cesnet:libyang:0.11:r1:::::: cpe:2.3:a:cesnet:libyang:0.11:r2:::::: cpe:2.3:a:cesnet:libyang:0.12:r1:::::: cpe:2.3:a:cesnet:libyang:0.12:r2:::::: cpe:2.3:a:cesnet:libyang:0.13:r1:::::: cpe:2.3:a:cesnet:libyang:0.13:r2:::::: cpe:2.3:a:cesnet:libyang:0.14:r1:::::: cpe:2.3:a:cesnet:libyang:0.15:r1:::::: cpe:2.3:a:cesnet:libyang:0.16:r1:::::: cpe:2.3:a:cesnet:libyang:0.16:r2:::::: cpe:2.3:a:cesnet:libyang:0.16:r3:::::: cpe:2.3:a:cesnet:libyang:1.0:r1:::::: cpe:2.3:a:cesnet:libyang:1.0:r2:::::: Remediation No remediation found in references.

Product

Versions

cesnet libyang

0.11 r1

0.11 r2

0.12 r1

0.12 r2

0.13 r1

CPE

cpe:2.3:a:cesnet:libyang:0.11:r1:*:*:*:*:*:*
cpe:2.3:a:cesnet:libyang:0.11:r2:*:*:*:*:*:*
cpe:2.3:a:cesnet:libyang:0.12:r1:*:*:*:*:*:*
cpe:2.3:a:cesnet:libyang:0.12:r2:*:*:*:*:*:*
cpe:2.3:a:cesnet:libyang:0.13:r1:*:*:*:*:*:*
cpe:2.3:a:cesnet:libyang:0.13:r2:*:*:*:*:*:*
cpe:2.3:a:cesnet:libyang:0.14:r1:*:*:*:*:*:*
cpe:2.3:a:cesnet:libyang:0.15:r1:*:*:*:*:*:*
cpe:2.3:a:cesnet:libyang:0.16:r1:*:*:*:*:*:*
cpe:2.3:a:cesnet:libyang:0.16:r2:*:*:*:*:*:*
cpe:2.3:a:cesnet:libyang:0.16:r3:*:*:*:*:*:*
cpe:2.3:a:cesnet:libyang:1.0:r1:*:*:*:*:*:*
cpe:2.3:a:cesnet:libyang:1.0:r2:*:*:*:*:*:*

Remediation

No remediation found in references.

Change History

5 change records found show changes

Date	Action	Recorded By
Jun 17, 2026	CVE Modified	[email protected]
Nov 21, 2024	CVE Modified	CVE
May 14, 2024	CVE Modified	[email protected]
Sep 19, 2023	CVE Modified	[email protected]
Jan 23, 2020	Initial Analysis	[email protected]