Candidate: CVE-2019-20394
PublicDate: 2020-01-22 22:15:00 UTC
References:
 https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-20394
 https://bugzilla.redhat.com/show_bug.cgi?id=1793932
 https://github.com/CESNET/libyang/commit/6cc51b1757dfbb7cff92de074ada65e8523289a6
 https://github.com/CESNET/libyang/issues/769
 https://github.com/CESNET/libyang/compare/v1.0-r2...v1.0-r3
Description:
 A double-free is present in libyang before v1.0-r3 in the function
 yyparse() when a type statement in used in a notification statement.
 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.
Ubuntu-Description:
Notes:
Mitigation:
Bugs:
Priority: medium
Discovered-by:
Assigned-to:
CVSS:
 nvd: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H [8.8 HIGH]


Patches_libyang:
 upstream: https://github.com/CESNET/libyang/commit/6cc51b1757dfbb7cff92de074ada65e8523289a6
upstream_libyang: released (1.0.176-1)
precise/esm_libyang: DNE
trusty_libyang: ignored (out of standard support)
trusty/esm_libyang: DNE
xenial_libyang: DNE
bionic_libyang: DNE
eoan_libyang: ignored (reached end-of-life)
focal_libyang: needed
groovy_libyang: ignored (reached end-of-life)
hirsute_libyang: ignored (reached end-of-life)
impish_libyang: not-affected (1.0.176-1)
jammy_libyang: not-affected (1.0.176-1)
devel_libyang: not-affected (1.0.176-1)