1. Ubuntu Security Notices
  2. USN-5366-1

USN-5366-1: FriBidi vulnerabilities

Publication date

7 April 2022

Overview

Several security issues were fixed in fribidi.

Releases

Packages

  • fribidi - Free Implementation of the Unicode BiDi algorithm (utility)

Details

It was discovered that FriBidi incorrectly handled processing of input strings
resulting in memory corruption. An attacker could use this issue to cause
FriBidi to crash, resulting in a denial of service, or potentially execute
arbitrary code.
(CVE-2022-25308)

It was discovered that FriBidi incorrectly validated input data to its CapRTL
unicode encoder, resulting in memory corruption. An attacker could use this
issue to cause FriBidi to crash, resulting in a denial of service, or
potentially execute arbitrary code.
(CVE-2022-25309)

It was discovered that FriBidi incorrectly handled empty input when removing
marks from unicode strings, resulting in a crash. An attacker could use this
to cause FriBidi to crash, resulting in a denial of service, or potentially
execute arbitrary code.
(CVE-2022-25310)

It was discovered that FriBidi incorrectly handled processing of input strings
resulting in memory corruption. An attacker could use this issue to cause
FriBidi to crash, resulting in a denial of service, or potentially execute
arbitrary code.
(CVE-2022-25308)

It was discovered that FriBidi incorrectly validated input data to its CapRTL
unicode encoder, resulting in memory corruption. An attacker could use this
issue to cause FriBidi to crash, resulting in a denial of service, or
potentially execute arbitrary code.
(CVE-2022-25309)

It was discovered that FriBidi incorrectly handled empty input when removing
marks from unicode strings, resulting in a crash. An attacker could use this
to cause FriBidi to crash, resulting in a denial of service, or potentially
execute arbitrary code.
(CVE-2022-25310)

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
21.10 impish libfribidi-bin –  1.0.8-2ubuntu2.1
libfribidi0 –  1.0.8-2ubuntu2.1
20.04 focal libfribidi-bin –  1.0.8-2ubuntu0.1
libfribidi0 –  1.0.8-2ubuntu0.1
18.04 bionic libfribidi-bin –  0.19.7-2ubuntu0.1
libfribidi0 –  0.19.7-2ubuntu0.1

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References

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