Vulnerability in Qpdf Project
CVE-2018-18020
In QPDF 8.2.1, in libqpdf/QPDFWriter.cc, QPDFWriter::unparseObject and QPDFWriter::unparseChild have recursive calls for a long time, which allows remote attackers to cause a denial of service via a crafted PDF file.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 3.3 (Low). Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L.
EPSS exploit prediction
EPSS: 0.012 (67.2th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 67th percentile — 67.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.013 · newest: 0.012 · change: -0.001
Affected products
- Qpdf Project — versions 8.2.1
Weakness classification (CWE)
Public proof-of-concept exploits
References
- github.com/qpdf/qpdf/issues/243 (Exploit, Third Party Advisory, Issue Tracking)
- lists.debian.org/debian-lts-announce/2023/08/msg00037.html (mailing-list)
Frequently asked questions
- What is CVE-2018-18020?
- CVE-2018-18020 is a low-severity vulnerability in Qpdf Project, classified under Uncontrolled Recursion. CVSS score: 3.3/10. Published 2018-10-06.
- How severe is CVE-2018-18020?
- Low severity. CVSS v3 base score is 3.3 out of 10.
- Is CVE-2018-18020 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.