CVE-2019-20393
published 2020-01-22CVE-2019-20393: A 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…
PriorityP341high8.8CVSS 3.1
AVNACLPRNUIRSUCHIHAH
EPSS
2.79%
84.8th percentile
A 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.
Affected
10 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| cesnet | libyang | — | — |
| cesnet | libyang | — | — |
| cesnet | libyang | — | — |
| cesnet | libyang | — | — |
| cesnet | libyang | — | — |
| cesnet | libyang | — | — |
| cesnet | libyang | >= 0 < 1.0.176-1 | 1.0.176-1 |
| cesnet | libyang | >= 0 < 1.0.176-1 | 1.0.176-1 |
| cesnet | libyang | >= 0 < 1.0.176-1 | 1.0.176-1 |
| debian | libyang | < libyang 1.0.176-1 (bullseye) | libyang 1.0.176-1 (bullseye) |
CVSS provenance
nvdv3.18.8HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
nvdv2.06.8MEDIUMAV:N/AC:M/Au:N/C:P/I:P/A:P
osv8.8HIGH
vendor_debian8.8HIGH
vendor_redhat8.8HIGH
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GHSA
GHSA-xr5g-jrq4-w3j4: A double-free is present in libyang before v1
ghsa_unreviewed·2022-05-24
CVE-2019-20393 [MEDIUM] CWE-415 GHSA-xr5g-jrq4-w3j4: A double-free is present in libyang before v1
A 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.
OSV
CVE-2019-20393: A double-free is present in libyang before v1
osv·2020-01-22·CVSS 8.8
CVE-2019-20393 [HIGH] CVE-2019-20393: A double-free is present in libyang before v1
A 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.
Red Hat
libyang: double-free in function yyparse() when empty description is used
vendor_redhat·2019-03-29·CVSS 8.8
CVE-2019-20393 [HIGH] CWE-416 libyang: double-free in function yyparse() when empty description is used
libyang: double-free in function yyparse() when empty description is used
A 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.
A double-free flaw occurs in libyang in function yyparse() when an empty description is used. Applications that use libyang to process untrusted input YANG files may be vulnerable to this flaw, possibly causing a crash or potential code execution.
Debian
CVE-2019-20393: libyang - A double-free is present in libyang before v1.0-r1 in the function yyparse() whe...
vendor_debian·2019·CVSS 8.8
CVE-2019-20393 [HIGH] CVE-2019-20393: libyang - A double-free is present in libyang before v1.0-r1 in the function yyparse() whe...
A 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.
Scope: local
bullseye: resolved (fixed in 1.0.176-1)
forky: resolved (fixed in 1.0.176-1)
sid: resolved (fixed in 1.0.176-1)
trixie: resolved (fixed in 1.0.176-1)
No detection rules found.
No public exploits indexed.
Bugzilla
CVE-2019-20393 libyang: double-free in function yyparse() when empty description is used [fedora-all]
bugzilla·2020-02-03·CVSS 8.8
CVE-2019-20393 [HIGH] CVE-2019-20393 libyang: double-free in function yyparse() when empty description is used [fedora-all]
CVE-2019-20393 libyang: double-free in function yyparse() when empty description is used [fedora-all]
This is an automatically created tracking bug! It was created to ensure
that one or more security vulnerabilities are fixed in affected versions
of fedora-all.
For comments that are specific to the vulnerability please use bugs filed
against the "Security Response" product referenced in the "Blocks" field.
For more information see:
http://fedoraproject.org/wiki/Security/TrackingBugs
When submitting as an update, use the fedpkg template provided in the next
comment(s). This will include the bug IDs of this tracking bug as well as
the relevant top-level CVE bugs.
Please also mention the CVE IDs being fixed in the RPM changelog and the
fedpkg commit message.
NOTE: this issue affects mul
Bugzilla
CVE-2019-20393 libyang: double-free in function yyparse() when empty description is used
bugzilla·2020-01-22·CVSS 8.8
CVE-2019-20393 [HIGH] CVE-2019-20393 libyang: double-free in function yyparse() when empty description is used
CVE-2019-20393 libyang: double-free in function yyparse() when empty description is used
A double-free is present in libyang up to version v1.0-r1 in 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.
Upstream issue:
https://github.com/CESNET/libyang/issues/742
Upstream fix:
https://github.com/CESNET/libyang/commit/d9feacc4a590d35dbc1af21caf9080008b4450ed
Discussion:
Created libyang tracking bugs for this issue:
Affects: fedora-all [bug 1797541]
https://bugzilla.redhat.com/show_bug.cgi?id=1793930https://github.com/CESNET/libyang/commit/d9feacc4a590d35dbc1af21caf9080008b4450edhttps://github.com/CESNET/libyang/compare/v0.16-r3...v1.0-r1https://github.com/CESNET/libyang/issues/742https://lists.debian.org/debian-lts-announce/2023/09/msg00019.htmlhttps://bugzilla.redhat.com/show_bug.cgi?id=1793930https://github.com/CESNET/libyang/commit/d9feacc4a590d35dbc1af21caf9080008b4450edhttps://github.com/CESNET/libyang/compare/v0.16-r3...v1.0-r1https://github.com/CESNET/libyang/issues/742https://lists.debian.org/debian-lts-announce/2023/09/msg00019.html
2020-01-22
Published