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AUSCERT External Security Bulletin Redistribution
ESB-2021.2598
USN-5026-2: QPDF vulnerabilities
3 August 2021
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AusCERT Security Bulletin Summary
---------------------------------
Product: QPDF
Publisher: Ubuntu
Operating System: Ubuntu
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
Reference: ESB-2021.2576
Original Bulletin:
https://ubuntu.com/security/notices/USN-5026-2
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USN-5026-2: QPDF vulnerabilities
02 August 2021
Several security issues were fixed in QPDF.
Releases
o Ubuntu 16.04 ESM
Packages
o qpdf - tools for transforming and inspecting PDF files
Details
USN-5026-1 fixed several vulnerabilities in QPDF. This update provides
the corresponding update for Ubuntu 16.04 ESM.
Original advisory 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. ( 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 16.04
o qpdf - 8.0.2-3~16.04.1+esm1
Available with UA Infra or UA Desktop
o libqpdf21 - 8.0.2-3~16.04.1+esm1
Available with UA Infra or UA Desktop
In general, a standard system update will make all the necessary changes.
References
o CVE-2021-36978
o CVE-2018-18020
Related notices
o USN-5026-1 : libqpdf-dev, libqpdf26, qpdf, libqpdf21
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