CVE-2021-21797

Public Exploit

Description

An exploitable double-free vulnerability exists in the JavaScript implementation of Nitro Pro PDF. A specially crafted document can cause a reference to a timeout object to be stored in two different places. When closed, the document will result in the reference being released twice. This can lead to code execution under the context of the application. An attacker can convince a user to open a document to trigger this vulnerability.

Category

7.8
CVSS
Severity: High
CVSS 3.1 •
CVSS 3.0 •
CVSS 2.0 •
EPSS 0.53%
Third-Party Advisory talosintelligence.com
Affected: n/a Nitro Pro
Published at:
Updated at:

References

Link Tags
https://talosintelligence.com/vulnerability_reports/TALOS-2021-1266 mitigation third party advisory exploit

Frequently Asked Questions

What is the severity of CVE-2021-21797?
CVE-2021-21797 has been scored as a high severity vulnerability.
How to fix CVE-2021-21797?
To fix CVE-2021-21797, 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-2021-21797 being actively exploited in the wild?
It is possible that CVE-2021-21797 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-21797?
CVE-2021-21797 affects n/a Nitro Pro.
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