CVE-2021-21796: Use After Free
First published: Mon Oct 18 2021(Updated: )
An exploitable use-after-free vulnerability exists in the JavaScript implementation of Nitro Pro PDF. A specially crafted document can cause an object containing the path to a document to be destroyed and then later reused, resulting in a use-after-free vulnerability, which 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.
Credit: talos-cna@cisco.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Gonitro Nitro Pro | =13.31.0.605 | |
| Gonitro Nitro Pro | =13.33.2.645 |
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Frequently Asked Questions
What is CVE-2021-21796?
CVE-2021-21796 is an exploitable use-after-free vulnerability in the JavaScript implementation of Nitro Pro PDF.
How does CVE-2021-21796 affect Nitro Pro PDF?
CVE-2021-21796 affects Nitro Pro PDF versions 13.31.0.605 and 13.33.2.645.
What is the severity of CVE-2021-21796?
CVE-2021-21796 has a severity score of 7.8, which is considered high.
How can CVE-2021-21796 be exploited?
CVE-2021-21796 can be exploited by a specially crafted document that causes an object to be destroyed and later reused, resulting in a use-after-free vulnerability.
Is there a fix for CVE-2021-21796?
At the time of this response, there is no known fix for CVE-2021-21796. It is recommended to keep the software up to date and exercise caution when opening untrusted documents.
- collector/nvd-index
- agent/type
- agent/softwarecombine
- collector/mitre-cve
- source/MITRE
- agent/last-modified-date
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- agent/weakness
- agent/author
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- vendor/gonitro
- canonical/gonitro nitro pro
- version/gonitro nitro pro/13.31.0.605
- version/gonitro nitro pro/13.33.2.645