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AUSCERT External Security Bulletin Redistribution
ESB-2021.2576
USN-5026-1: QPDF vulnerabilities
30 July 2021
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AusCERT Security Bulletin Summary
---------------------------------
Product: QPDF
Publisher: Ubuntu
Operating System: Ubuntu
UNIX variants (UNIX, Linux, OSX)
Impact/Access: Execute Arbitrary Code/Commands -- Remote with User Interaction
Denial of Service -- Remote with User Interaction
Resolution: Patch/Upgrade
CVE Names: CVE-2021-36978 CVE-2018-18020
Original Bulletin:
https://ubuntu.com/security/notices/USN-5026-1
Comment: This advisory references vulnerabilities in products which run on
platforms other than Ubuntu. It is recommended that administrators
running QPDF check for an updated version of the software for their
operating system.
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USN-5026-1: QPDF vulnerabilities
29 July 2021
Several security issues were fixed in QPDF.
Releases
o Ubuntu 20.04 LTS
o Ubuntu 18.04 LTS
Packages
o 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 )
Update instructions
The problem can be corrected by updating your system to the following package
versions:
Ubuntu 20.04
o qpdf - 9.1.1-1ubuntu0.1
o libqpdf26 - 9.1.1-1ubuntu0.1
Ubuntu 18.04
o qpdf - 8.0.2-3ubuntu0.1
o libqpdf21 - 8.0.2-3ubuntu0.1
In general, a standard system update will make all the necessary changes.
References
o CVE-2018-18020
o CVE-2021-36978
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