CVE-2019-20393

Summary

CVECVE-2019-20393
StatePUBLIC
Assigner[email protected]
Source PriorityCVE Program / NVD first with legacy fallback
Published2020-01-22 22:15:00 UTC
Updated2023-09-19 22:15:00 UTC
DescriptionA double-free is present in libyang before v1.0-r1 in the function yyparse() when an empty description is used. Applications that use libyang to parse untrusted input yang files may be vulnerable to this flaw, which would cause a crash or potentially code execution.

Risk And Classification

Problem Types: CWE-415

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Cesnet Libyang 0.11 r1 All All
Application Cesnet Libyang 0.11 r2 All All
Application Cesnet Libyang 0.12 r1 All All
Application Cesnet Libyang 0.12 r2 All All
Application Cesnet Libyang 0.13 r1 All All
Application Cesnet Libyang 0.13 r2 All All
Application Cesnet Libyang 0.14 r1 All All
Application Cesnet Libyang 0.15 r1 All All
Application Cesnet Libyang 0.16 r1 All All
Application Cesnet Libyang 0.16 r2 All All
Application Cesnet Libyang 0.16 r3 All All
Application Cesnet Libyang 0.11 r1 All All
Application Cesnet Libyang 0.11 r2 All All
Application Cesnet Libyang 0.12 r1 All All
Application Cesnet Libyang 0.12 r2 All All
Application Cesnet Libyang 0.13 r1 All All
Application Cesnet Libyang 0.13 r2 All All
Application Cesnet Libyang 0.14 r1 All All
Application Cesnet Libyang 0.15 r1 All All
Application Cesnet Libyang 0.16 r1 All All
Application Cesnet Libyang 0.16 r2 All All
Application Cesnet Libyang 0.16 r3 All All

References

ReferenceSourceLinkTags
Comparing v0.16-r3...v1.0-r1 · CESNET/libyang · GitHub MISC github.com Third Party Advisory
Heap corruption in yyparse · Issue #742 · CESNET/libyang · GitHub MISC github.com Exploit, Third Party Advisory
[SECURITY] [DLA 3572-1] libyang security update MLIST lists.debian.org
1793930 – (CVE-2019-20393) CVE-2019-20393 libyang: double-free in function yyparse() when empty description is used MISC bugzilla.redhat.com Issue Tracking, Patch, Third Party Advisory
yang parser BUGFIX double free · CESNET/libyang@d9feacc · GitHub MISC github.com Patch, Third Party Advisory
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Legacy QID Mappings

  • 6000044 Debian Security Update for libyang (DLA 3572-1)
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