Exploit/Advisories

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Ubuntu Security Notice USN-5476-1
June 13, 2022

liblouis vulnerabilities
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A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 22.04 LTS
- Ubuntu 21.10
- Ubuntu 20.04 LTS
- Ubuntu 18.04 LTS

Summary:

Several security issues were fixed in liblouis.

Software Description:
- liblouis: Braille translation library - utilities

Details:

Han Zheng discovered that Liblouis incorrectly handled certain inputs.
An attacker could possibly use this issue to cause a crash. This issue was
addressed in Ubuntu 21.10 and Ubuntu 22.04 LTS. (CVE-2022-26981)

It was discovered that Liblouis incorrectly handled certain inputs.
An attacker could possibly use this issue to execute arbitrary code
or cause a crash. (CVE-2022-31783)

Update instructions:

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

Ubuntu 22.04 LTS:
liblouis-bin 3.20.0-2ubuntu0.1
liblouis20 3.20.0-2ubuntu0.1

Ubuntu 21.10:
liblouis-bin 3.18.0-1ubuntu0.2
liblouis20 3.18.0-1ubuntu0.2

Ubuntu 20.04 LTS:
liblouis-bin 3.12.0-3ubuntu0.1
liblouis20 3.12.0-3ubuntu0.1

Ubuntu 18.04 LTS:
liblouis-bin 3.5.0-1ubuntu0.4
liblouis14 3.5.0-1ubuntu0.4

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

References:
https://ubuntu.com/security/notices/USN-5476-1
CVE-2022-26981, CVE-2022-31783

Package Information:
https://launchpad.net/ubuntu/+source/liblouis/3.20.0-2ubuntu0.1
https://launchpad.net/ubuntu/+source/liblouis/3.18.0-1ubuntu0.2
https://launchpad.net/ubuntu/+source/liblouis/3.12.0-3ubuntu0.1
https://launchpad.net/ubuntu/+source/liblouis/3.5.0-1ubuntu0.4

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