Low severity · published Oct 6, 2018
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…
3.3
CVSS
1.2%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L
Attack vector
Local
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
None
Integrity
None
Availability
Low
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.2% · higher than 68% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
QP
Qpdf · Qpdf Project
8.2.1 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2018-18020
CVE.org
https://www.cve.org/CVERecord?id=CVE-2018-18020
Exploit
https://github.com/qpdf/qpdf/issues/243
lists.debian.org
https://lists.debian.org/debian-lts-announce/2023/08/msg00037.html
More from Qpdf
7.8
CVE-2018-9918
libqpdf.a in QPDF through 8.0.2 mishandles certain "expected dictionary key but found non-name object" cases, allowing remote attackers to cause a denial of service (stack…
7.8
CVE-2017-12595
The tokenizer in QPDF 6.0.0 and 7.0.b1 is recursive for arrays and dictionaries, which allows remote attackers to cause a denial of service (stack consumption and segmentation…
6.5
CVE-2022-34503
QPDF v8.4.2 was discovered to contain a heap buffer overflow via the function QPDF::processXRefStream
5.5
CVE-2024-24246
Heap Buffer Overflow vulnerability in qpdf 11.9.0 allows attackers to crash the application via the std::__shared_count() function at /bits/shared_ptr_base.h
5.5
CVE-2021-36978
QPDF 9.x through 9.1.1 and 10.x through 10.0.4 has a heap-based buffer overflow in Pl_ASCII85Decoder::write (called from Pl_AES_PDF::flush and Pl_AES_PDF::finish) when a certain…