PT-2021-18745 · Podofo+4 · Podofo+4

Guilherme De Almeida Suckevicz · Published 2021-05-26 · Updated 2025-01-20 · CVE-2021-30471

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 PdfNamesTree::AddToDictionary function in src/podofo/doc/PdfNamesTree.cpp, which can lead to a stack overflow due to an uncontrolled recursive call.

Recommendations For PoDoFo version 0.9.7, consider restricting access to the PdfNamesTree::AddToDictionary function until a patch is available. As a temporary workaround, avoid using the AddToDictionary function to minimize the risk of exploitation. At the moment, there is no information about a newer version that contains a fix for this issue.

Exploit

Fix

Uncontrolled Recursion

Improper Certificate Validation

Weakness Enumeration

CWE-674

CWE-924

CWE-295

Related Identifiers

ALT-PU-2023-4738

ALT-PU-2023-5043

ALT-PU-2023-5421

ALT-PU-2023-5585

BDU:2025-03801

BDU:2025-16067

CVE-2021-30471

USN-7217-1

Affected Products

Alt Linux

Debian

Linuxmint

Podofo

Ubuntu

References · 44

• 🔥 https://bugzilla.redhat.com/show_bug.cgi?id=1947441 · Exploit
• https://ubuntu.com/security/CVE-2019-10723 · Vendor Advisory
• https://lists.fedoraproject.org/archives/list/[e-mail]/message/OX6GWZS354D2YSWNBRRT4TAU4446FOOG · Vendor Advisory
• https://ubuntu.com/security/notices/USN-7217-1 · Vendor Advisory
• https://bdu.fstec.ru/vul/2025-16067 · Security Note
• https://lists.fedoraproject.org/archives/list/[e-mail]/message/56CQ66SQFAFDB2JPMOCRC2IJISJ4Y5FX · Vendor Advisory
• https://ubuntu.com/security/CVE-2021-30471 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-30471 · Security Note
• https://osv.dev/vulnerability/DEBIAN-CVE-2021-30471 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2021-30471 · Vendor Advisory
• https://ubuntu.com/security/CVE-2018-20797 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2021-30471 · Security Note
• https://security-tracker.debian.org/tracker/CVE-2021-30471 · Vendor Advisory
• https://ubuntu.com/security/CVE-2018-12983 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2021-30471 · Vendor Advisory