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.

The remote Debian 10 host has packages installed that are affected by multiple vulnerabilities as referenced in the dla-3548 advisory.

    - -------------------------------------------------------------------------     Debian LTS Advisory DLA-3548-1                debian-lts@lists.debian.org     https://www.debian.org/lts/security/                    Thorsten Alteholz     August 29, 2023                               https://wiki.debian.org/LTS
    - -------------------------------------------------------------------------

    Package        : qpdf     Version        : 8.4.0-2+deb10u1     CVE ID         : CVE-2018-18020 CVE-2021-25786 CVE-2021-36978


    Several issues have been found in qpdf, a package with tools for     transforming and inspecting PDF files.
    Crafted files may enable remote attackers to execute arbitrary code or     create recursive calls for a long time, which causes a denial of service.
    Further a heap-based buffer overflow might occur when a certain downstream     write fails.



    For Debian 10 buster, these problems have been fixed in version     8.4.0-2+deb10u1.

    We recommend that you upgrade your qpdf packages.

    For the detailed security status of qpdf please refer to     its security tracker page at:
    https://security-tracker.debian.org/tracker/qpdf

    Further information about Debian LTS security advisories, how to apply     these updates to your system and frequently asked questions can be     found at: https://wiki.debian.org/LTS

Tenable has extracted the preceding description block directly from the Debian security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Ubuntu 16.04 ESM host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-5026-2 advisory.

    USN-5026-1 fixed several vulnerabilities in QPDF. This update provides the corresponding update for Ubuntu     16.04 ESM.

Tenable has extracted the preceding description block directly from the Ubuntu security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Ubuntu 18.04 LTS / 20.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-5026-1 advisory.

    It was discovered that QPDF incorrectly handled certain malformed PDF files. A remote attacker could use     this issue to cause QPDF to consume resources, resulting in a denial of service. This issue only affected     Ubuntu 18.04 LTS. (CVE-2018-18020)

    It was discovered that QPDF incorrectly handled certain malformed PDF files. A remote attacker could use     this issue to cause QPDF to crash, resulting in a denial of service, or possibly execute arbitrary code.
    (CVE-2021-36978)

Tenable has extracted the preceding description block directly from the Ubuntu security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

According to the version of the qpdf package installed, the EulerOS installation on the remote host is affected by the following vulnerability :

  - 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.(CVE-2018-18020)

Note that Tenable Network Security has extracted the preceding description block directly from the EulerOS security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

ID	Name	Product	Family	Severity
180269	Debian dla-3548 : libqpdf-dev - security update	Nessus	Debian Local Security Checks	medium
152178	Ubuntu 16.04 ESM : QPDF vulnerabilities (USN-5026-2)	Nessus	Ubuntu Local Security Checks	medium
152145	Ubuntu 18.04 LTS / 20.04 LTS : QPDF vulnerabilities (USN-5026-1)	Nessus	Ubuntu Local Security Checks	medium
132623	EulerOS 2.0 SP8 : qpdf (EulerOS-SA-2020-1030)	Nessus	Huawei Local Security Checks	low

Detections

Analytics

CVE-2018-18020

low

Tenable Plugins

medium

medium

medium

low