CVE-2019-20396 Null dereference in n/a
A segmentation fault in libyang allows attackers to cause a denial of service via malformed pattern statements during parsing.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2019-20396?
CVE-2019-20396 is a medium-severity vulnerability in n/a, published on 22 Jan 2020. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
A segmentation fault is present in yyparse in libyang before v1.0-r1 due to a malformed pattern statement value during lys_parse_path parsing.
Weakness: CWE-119
Which versions are affected by CVE-2019-20396?
It affects 1 product.
Products include Cesnet Libyang.
How do I fix CVE-2019-20396?
Upgrade to a fixed version.
Is CVE-2019-20396 being exploited?
There is no known exploitation of CVE-2019-20396 in the wild and no public exploit code.
Other vulnerabilities in n/a
Sources
Also known as DEBIAN-CVE-2019-20396, GHSA-8wpf-h467-qvv5, UBUNTU-CVE-2019-20396.