HTTP: Foxit PDF Reader and Editor Annotation Use After Free

This signature detects attempts to exploit a known vulnerability against Foxit PDF Reader and Editor Annotation. A successful attack can lead to arbitrary code execution.

Extended Description

This vulnerability allows remote attackers to execute arbitrary code on affected installations of Foxit PDF Reader 11.0.0.49893. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The specific flaw exists within the handling of Annotation objects. The issue results from the lack of validating the existence of an object prior to performing operations on the object. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-14270.

References

CVE: CVE-2021-34833

URL: http://www.zerodayinitiative.com/advisories/ZDI-21-930/ http://www.zerodayinitiative.com/advisories/ZDI-21-929/ https://www.foxit.com/support/security-bulletins.html http://www.zerodayinitiative.com/advisories/ZDI-21-932/ http://www.zerodayinitiative.com/advisories/ZDI-21-924/ http://www.zerodayinitiative.com/advisories/ZDI-21-915/

Short Name

HTTP:STC:FOXIT-RDR-ANNOT-UAF

Severity

Minor

Recommended

False

Recommended Action

Drop

HTTP: Foxit PDF Reader and Editor Annotation Use After Free

Extended Description

References

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