PT-2018-3927 · Qpdf+4 · Qpdf+4

Krace · Published 2018-10-06 · Updated 2023-08-30 · CVE-2018-18020

Positive Technologies (AI Summary)

CVSS v2.0

5.0

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions QPDF version 8.2.1

Description The issue is related to uncontrolled recursion in the libqpdf/QPDFWriter.cc component of the QPDF utility for converting PDF documents. This allows a remote attacker to cause a denial of service using a specially crafted PDF file. The estimated number of potentially affected devices worldwide is not available. There is no information about real-world incidents where this issue was exploited.

Recommendations For QPDF version 8.2.1, as a temporary workaround, consider restricting the use of the QPDFWriter::unparseObject and QPDFWriter::unparseChild functions until a patch is available. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

DoS

Uncontrolled Recursion

Weakness Enumeration

CWE-674

Related Identifiers

ALT-PU-2019-1083

BDU:2023-03810

CVE-2018-18020

DLA-3548-1

USN-5026-1

USN-5026-2

Affected Products

Alt Linux

Astra Linux

Linuxmint

Qpdf

Ubuntu

References · 20

• 🔥 https://github.com/qpdf/qpdf/issues/243 · Exploit
• https://ubuntu.com/security/notices/USN-5026-2 · Vendor Advisory
• https://osv.dev/vulnerability/DLA-3548-1 · Vendor Advisory
• https://wiki.astralinux.ru/astra-linux-se17-bulletin-2023-0630SE17MD · Vendor Advisory
• https://ubuntu.com/security/CVE-2021-36978 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2018-18020 · Vendor Advisory
• https://osv.dev/vulnerability/USN-5026-1 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2018-18020 · Vendor Advisory
• https://ubuntu.com/security/CVE-2018-18020 · Vendor Advisory
• https://wiki.astralinux.ru/astra-linux-se47-bulletin-2023-0907SE47 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2018-18020 · Vendor Advisory
• https://bdu.fstec.ru/vul/2023-03810 · Security Note
• https://cve.org/CVERecord?id=CVE-2018-18020 · Security Note
• https://osv.dev/vulnerability/USN-5026-2 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2018-18020 · Security Note