1. Ubuntu Security Notices
  2. USN-5026-1

USN-5026-1: QPDF vulnerabilities

Publication date

29 July 2021

Overview

Several security issues were fixed in QPDF.

Releases

Packages

  • qpdf - tools for transforming and inspecting PDF files

Details

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)

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)

Update instructions

In general, a standard system update will make all the necessary changes.

Learn more about how to get the fixes.

The problem can be corrected by updating your system to the following package versions:

Ubuntu Release Package Version
20.04 focal qpdf –  9.1.1-1ubuntu0.1
libqpdf26 –  9.1.1-1ubuntu0.1
18.04 bionic qpdf –  8.0.2-3ubuntu0.1
libqpdf21 –  8.0.2-3ubuntu0.1

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References

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