CVE-2021-21798

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...

CVE-2021-21796

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...

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 lea...

Vulnerabilities fixed in Nitro Pro PDF

Vulnerabilities have been fixed in Nitro Pro PDF. The vulnerabilities allow an unauthenticated remote malicious person to opportunity to execute arbitrary code under the privileges of the application. To do this, the malicious agent must trick the victim to open a malicious file. Nitro Software...

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 lea...

CVE-2021-21796

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...

CVE-2021-21796

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...

Double free

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 lea...

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 lea...

CVE-2021-21797

CVE-2021-21797 is a double-free vulnerability in Nitro Pro PDF’s JavaScript runtime (TimeOutObject) that can enable code execution when a specially crafted document is opened. The Red Hat advisory and Talos writeups confirm exploitation via Nitro Pro PDF’s embedded JavaScript, describing a double...

EUVD-2021-8969

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 lea...

CVE-2021-21796

CVE-2021-21796 is an exploitable use-after-free in the Nitro Pro PDF JavaScript implementation. A specially crafted Nitro Pro PDF document can cause a destroyed object (local_file_path) to be reused, enabling code execution under the application context. The vulnerability chain involves: (1) app....

EUVD-2021-8968

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...

Vulnerability Spotlight: Code execution vulnerabilities in Nitro Pro PDF

A Cisco Talos team member discovered these vulnerabilities. Blog by Jon Munshaw. Cisco Talos recently discovered multiple vulnerabilities in the Nitro Pro PDF reader that could allow an attacker to execute code in the context of the application. Nitro Pro PDF is part of Nitro Software’s... This i...

Nitro Pro PDF JavaScript TimeOutObject double free vulnerability

Summary 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...

CVE-2021-21798

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...

CVE-2021-21798

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...

Design/Logic Flaw

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...

CVE-2021-21798

CVE-2021-21798 affects Nitro Pro PDF through its JavaScript engine (np_java_script.dll/js32u.dll). A stack variable address return in the Document JavaScript bindings (notably Document.flattenPages) can cause a use-after-free on a JSStackFrame when an exception is raised, allowing code execution ...

CVE-2021-21798

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...