PT-2021-5421 · Foxit · Foxit Pdf Reader+1

Cor3Sm4Sh3R · Published 2021-10-15 · Updated 2024-05-08 · CVE-2021-34955

Positive Technologies (AI Summary)

CVSS v2.0

10

High

Base vector

AV:N/AC:L/Au:N/C:C/I:C/A:C

Name of the Vulnerable Software and Affected Versions Foxit PDF Reader and Foxit PDF Editor (affected versions not specified)

Description The issue is caused by a use-after-free error in the handling of Annotation objects, resulting from the lack of validation of an object's existence before performing operations on it. This allows remote attackers to execute arbitrary code on affected installations by exploiting the vulnerability through a malicious page or file. User interaction is required, where the target must visit a malicious page or open a malicious file.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

RCE

Buffer Overflow

Use After Free

Weakness Enumeration

CWE-119

CWE-416

Related Identifiers

BDU:2021-06264

CVE-2021-34955

ZDI-21-1186

Affected Products

Foxit Pdf Editor

Foxit Pdf Reader

References · 10

• https://safe-surf.ru/specialists/bulletins-nkcki/671771 · Security Note
• https://foxit.com/support/security-bulletins.html · Vendor Advisory
• https://zerodayinitiative.com/advisories/ZDI-21-1186 · Security Note
• https://bdu.fstec.ru/vul/2021-06264 · Security Note
• https://osv.dev/vulnerability/CVE-2021-34955 · Vendor Advisory
• https://safe-surf.ru/upload/VULN/VULN-20211130.5.pdf · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2021-34955 · Security Note
• https://t.me/cvenotify/79511 · Telegram Post
• https://foxit.com/support/security-bulletins.html?Security+updates+available+in+Foxit+PhantomPDF+10.1.62021-11-29+00%3A00%3A00 · Note
• https://twitter.com/CVEnew/status/1788295967281975338 · Twitter Post