CVE-2021-21798 — HIGH (7.8)

Vulnerability Description

An exploitable return of stack variable address vulnerability exists in the JavaScript implementation of Nitro Pro PDF. A specially crafted document can cause a stack variable to go out of scope, resulting in the application dereferencing a stale pointer. This can lead to code execution under the context of the application. An attacker can convince a user to open a document to trigger the vulnerability.

CVSS Score

7.8

HIGH

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality

HIGH

Integrity

HIGH

Availability

HIGH

Affected Products

Vendor	Product	Versions
Gonitro	Nitro Pro	13.31.0.605

Related Weaknesses (CWE)

CWE-562

References

https://talosintelligence.com/vulnerability_reports/TALOS-2021-1267ExploitThird Party Advisory
https://talosintelligence.com/vulnerability_reports/TALOS-2021-1267ExploitThird Party Advisory

FAQ

What is CVE-2021-21798?

CVE-2021-21798 is a vulnerability with a CVSS score of 7.8 (HIGH). An exploitable return of stack variable address vulnerability exists in the JavaScript implementation of Nitro Pro PDF. A specially crafted document can cause a stack variable to go out of scope, resu...

How severe is CVE-2021-21798?

CVE-2021-21798 has been rated HIGH with a CVSS base score of 7.8/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2021-21798?

Check the references section above for vendor advisories and patch information. Affected products include: Gonitro Nitro Pro.