=========================================================================Ubuntu Security Notice USN-5366-1
April 07, 2022
fribidi vulnerabilities
=========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 21.10
- Ubuntu 20.04 LTS
- Ubuntu 18.04 LTS
Summary:
Several security issues were fixed in fribidi.
Software Description:
- 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)
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 21.10:
libfribidi-bin 1.0.8-2ubuntu2.1
libfribidi0 1.0.8-2ubuntu2.1
Ubuntu 20.04 LTS:
libfribidi-bin 1.0.8-2ubuntu0.1
libfribidi0 1.0.8-2ubuntu0.1
Ubuntu 18.04 LTS:
libfribidi-bin 0.19.7-2ubuntu0.1
libfribidi0 0.19.7-2ubuntu0.1
In general, a standard system update will make all the necessary changes.
References:
https://ubuntu.com/security/notices/USN-5366-1
CVE-2022-25308, CVE-2022-25309, CVE-2022-25310
Package Information:
https://launchpad.net/ubuntu/+source/fribidi/1.0.8-2ubuntu2.1
https://launchpad.net/ubuntu/+source/fribidi/1.0.8-2ubuntu0.1
https://launchpad.net/ubuntu/+source/fribidi/0.19.7-2ubuntu0.1
