Critical severity · published Dec 6, 2019
CVE-2019-19333
In all versions of libyang before 1.0-r5, a stack-based buffer overflow was discovered in the way libyang parses YANG files with a leaf of type "bits"
9.8
CVSS
3.6%
EPSS
No
On KEV
Description
In all versions of libyang before 1.0-r5, a stack-based buffer overflow was discovered in the way libyang parses YANG files with a leaf of type "bits". An application that uses libyang to parse untrusted YANG files may be vulnerable to this flaw, which would allow an attacker to cause a denial of service or possibly gain code execution.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)3.6% · higher than 90% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
EL
Enterprise Linux · Redhat
8.0 · source: NVD
LI
Libyang · Cesnet
0.11; 0.11; 0.12; 0.12; 0.13; 0.13; +9 more · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2019-19333
CVE.org
https://www.cve.org/CVERecord?id=CVE-2019-19333
access.redhat.com
https://access.redhat.com/errata/RHSA-2019:4360
Issue Tracking
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-19333
Patch
https://github.com/CESNET/libyang/commit/f6d684ade99dd37b21babaa8a856f64faa1e2e0d
lists.fedoraproject.org
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PETB6TVMFV5KUD4IKVP2JPLBCYHUGSAJ/
lists.fedoraproject.org
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RL54JMS7XW7PI6JC4BFSNNLSX5AINQUL/
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