Double Free in Gonitro Nitro Pro
CVE-2021-21797
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.
Vulnerability class: Double Free
EPSS: 0.150 (96.5th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.
Affected products
- Gonitro Nitro_pro — versions 13.31.0.605, 13.33.2.645
- N/a Nitro Pro — versions Nitro Pro 13.31.0.605 ,Nitro Pro 13.33.2.645
Weakness classification (CWE)
Public proof-of-concept exploits
References
- talos-cna@cisco.com (Exploit, Third Party Advisory, x_refsource_MISC, Mitigation)
Frequently asked questions
- What is CVE-2021-21797?
- CVE-2021-21797 is a high-severity vulnerability in Gonitro Nitro Pro, classified under Double Free. CVSS score: 7.8/10. Published 2021-10-18.
- How severe is CVE-2021-21797?
- High severity. CVSS v3 base score is 7.8 out of 10.
- Is CVE-2021-21797 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.