CVE-2019-20392 — Improper Restriction of Operations within the Bounds of a Memory Buffer in Libyang

CWE-119 — Improper Restriction of Operations within the Bounds of a Memory Buffer7 documents6 sources
Severity
6.5MEDIUMNVD
EPSS
0.2%
top 57.63%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
2
Cesnet LibyangDebian Libyang
Timeline
PublishedJan 22
Latest updateMay 24

Description

An invalid memory access flaw is present in libyang before v1.0-r1 in the function resolve_feature_value() when an if-feature statement is used inside a list key node, and the feature used is not defined. Applications that use libyang to parse untrusted input yang files may crash.

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:HExploitability: 2.8 | Impact: 3.6

Affected Packages3 packages

▶debiandebian/libyang< libyang 1.0.176-1 (bullseye)
▶Debiancesnet/libyang< 1.0.176-1+2
▶NVDcesnet/libyang6 versions+5

Patches

Patch: bugzilla.redhat.com ↗Patch: github.com ↗Patch: bugzilla.redhat.com ↗

🔴Vulnerability Details

2
GHSA
GHSA-5xx9-wg6x-hj24: An invalid memory access flaw is present in libyang before v1↗2022-05-24
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OSV
CVE-2019-20392: An invalid memory access flaw is present in libyang before v1↗2020-01-22
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📋Vendor Advisories

2
Red Hat
libyang: invalid memory access when if-feature statement is used inside a list key node↗2019-03-07
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Debian
CVE-2019-20392: libyang - An invalid memory access flaw is present in libyang before v1.0-r1 in the functi...↗2019
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💬Community

2
Bugzilla
CVE-2019-20392 libyang: invalid memory access when if-feature statement is used inside a list key node [fedora-all]↗2020-02-03
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Bugzilla
CVE-2019-20392 libyang: invalid memory access when if-feature statement is used inside a list key node↗2020-01-22
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