CVE-2019-20392 Null dereference in n/a
An attacker can cause a denial of service by providing a crafted YANG file to applications using the libyang library.
- 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-2019-20392?
CVE-2019-20392 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
An invalid memory access flaw is present in libyang before v1.0-r1 in the function resolve_feature_value() when an if-feature statement is used inside a list key node, and the feature used is not defined. Applications that use libyang to parse untrusted input yang files may crash.
Weakness: CWE-119
Which versions are affected by CVE-2019-20392?
It affects 1 product.
Products include Cesnet Libyang.
How do I fix CVE-2019-20392?
Upgrade to a fixed version.
Is CVE-2019-20392 being exploited?
There is no known exploitation of CVE-2019-20392 in the wild and no public exploit code.
Other vulnerabilities in n/a
Sources
Also known as DEBIAN-CVE-2019-20392, GHSA-5xx9-wg6x-hj24, UBUNTU-CVE-2019-20392.