CVE-2021-28902

Public Exploit

Description

In function read_yin_container() in libyang <= v1.0.225, it doesn't check whether the value of retval->ext[r] is NULL. In some cases, it can be NULL, which leads to the operation of retval->ext[r]->flags that results in a crash.

Category

7.5
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.10%
Vendor Advisory gentoo.org
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://github.com/CESNET/libyang/issues/1454 third party advisory issue tracking exploit
https://security.gentoo.org/glsa/202107-54 third party advisory vendor advisory

Frequently Asked Questions

What is the severity of CVE-2021-28902?
CVE-2021-28902 has been scored as a high severity vulnerability.
How to fix CVE-2021-28902?
To fix CVE-2021-28902, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-28902 being actively exploited in the wild?
It is possible that CVE-2021-28902 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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