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Ubuntu 20.04 & 18.04: 5026-1 Critical: QPDF DoS Threats

ubuntu
Calendar Grey July 29, 2021
Dist Ubuntu Esm H88
Numerous vulnerabilities in QPDF were resolved in the Ubuntu update for July 2021, emphasizing the potential for denial of service threats.
Several security issues were fixed in QPDF.

Summary

Several security issues were fixed in QPDF.

Software Description:

- 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)

Topics%20covered

Topics Covered

security advisory critical software update DoS remote attack Ubuntu QPDF

Update Instructions

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

Ubuntu 20.04 LTS:
  libqpdf26                       9.1.1-1ubuntu0.1
  qpdf                            9.1.1-1ubuntu0.1

Ubuntu 18.04 LTS:
  libqpdf21                       8.0.2-3ubuntu0.1
  qpdf                            8.0.2-3ubuntu0.1

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

References

https://ubuntu.com/security/notices/USN-5026-1

CVE-2018-18020, CVE-2021-36978

Severity
critical
Lowest
Low
Medium
High
Critical

July 29, 2021

Topics%20covered

Topics Covered

security advisory critical software update DoS remote attack Ubuntu QPDF

Package Information

https://launchpad.net/ubuntu/+source/qpdf/9.1.1-1ubuntu0.1
https://launchpad.net/ubuntu/+source/qpdf/8.0.2-3ubuntu0.1

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