PT-2021-18744 · Podofo+4 · Podofo+4

Guilherme De Almeida Suckevicz · Published 2021-05-26 · Updated 2025-01-20 · CVE-2021-30470

Positive Technologies (AI Summary)

CVSS v3.1

5.5

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions PoDoFo version 0.9.7

Description A flaw was found in the software, where an uncontrolled recursive call among PdfTokenizer::ReadArray(), PdfTokenizer::GetNextVariant(), and PdfTokenizer::ReadDataType() functions can lead to a stack overflow.

Recommendations For PoDoFo version 0.9.7, consider restricting the use of the PdfTokenizer functions to minimize the risk of exploitation until a patch is available. As a temporary workaround, avoid using the ReadArray(), GetNextVariant(), and ReadDataType() functions in the PdfTokenizer class. At the moment, there is no information about a newer version that contains a fix for this issue.

Exploit

Fix

Uncontrolled Recursion

Weakness Enumeration

CWE-674

Related Identifiers

ALT-PU-2023-4738

ALT-PU-2023-5043

ALT-PU-2023-5421

ALT-PU-2023-5585

BDU:2025-16068

CVE-2021-30470

USN-7217-1

Affected Products

Alt Linux

Debian

Linuxmint

Podofo

Ubuntu

References · 26

• 🔥 https://bugzilla.redhat.com/show_bug.cgi?id=1947436 · Exploit
• https://ubuntu.com/security/CVE-2019-10723 · Vendor Advisory
• https://bdu.fstec.ru/vul/2025-16068 · Security Note
• https://security-tracker.debian.org/tracker/CVE-2021-30470 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2021-30470 · Vendor Advisory
• https://ubuntu.com/security/notices/USN-7217-1 · Vendor Advisory
• https://wiki.astralinux.ru/astra-linux-se17-bulletin-2025-1202SE17 · Vendor Advisory
• https://ubuntu.com/security/CVE-2020-18971 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-30470 · Security Note
• https://ubuntu.com/security/CVE-2021-30470 · Vendor Advisory
• https://ubuntu.com/security/CVE-2017-5886 · Vendor Advisory
• https://ubuntu.com/security/CVE-2021-30471 · Vendor Advisory
• https://ubuntu.com/security/CVE-2018-8002 · Vendor Advisory
• https://wiki.astralinux.ru/astra-linux-se47-bulletin-2025-1216SE47 · Vendor Advisory
• https://ubuntu.com/security/CVE-2018-11255 · Vendor Advisory