Vulnerability Details : CVE-2021-21797
Potential exploit
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 category: Memory Corruption
Products affected by CVE-2021-21797
- cpe:2.3:a:gonitro:nitro_pro:13.31.0.605:*:*:*:*:*:*:*
- cpe:2.3:a:gonitro:nitro_pro:13.33.2.645:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2021-21797
0.09%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 39 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2021-21797
Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
---|---|---|---|---|---|---|
6.8
|
MEDIUM | AV:N/AC:M/Au:N/C:P/I:P/A:P |
8.6
|
6.4
|
NIST | |
8.8
|
HIGH | CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
2.8
|
5.9
|
Talos | |
7.8
|
HIGH | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
1.8
|
5.9
|
NIST |
CWE ids for CVE-2021-21797
-
The product calls free() twice on the same memory address, potentially leading to modification of unexpected memory locations.Assigned by:
- nvd@nist.gov (Primary)
- talos-cna@cisco.com (Secondary)
References for CVE-2021-21797
-
https://talosintelligence.com/vulnerability_reports/TALOS-2021-1266
TALOS-2021-1266 || Cisco Talos Intelligence Group - Comprehensive Threat IntelligenceExploit;Mitigation;Third Party Advisory
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