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AUSCERT External Security Bulletin Redistribution
ESB-2022.1510
USN-5366-1: FriBidi vulnerabilities
8 April 2022
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AusCERT Security Bulletin Summary
---------------------------------
Product: FriBidi
Publisher: Ubuntu
Operating System: Ubuntu
Resolution: Patch/Upgrade
CVE Names: CVE-2022-25310 CVE-2022-25309 CVE-2022-25308
Original Bulletin:
https://ubuntu.com/security/notices/USN-5366-1
Comment: CVSS (Max): 7.0 CVE-2022-25308 (CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H)
CVSS Source: Red Hat
Calculator: https://www.first.org/cvss/calculator/3.1#CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
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USN-5366-1: FriBidi vulnerabilities
7 April 2022
Several security issues were fixed in fribidi.
Releases
o Ubuntu 21.10
o Ubuntu 20.04 LTS
o Ubuntu 18.04 LTS
Packages
o 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
o libfribidi-bin - 1.0.8-2ubuntu2.1
o libfribidi0 - 1.0.8-2ubuntu2.1
Ubuntu 20.04
o libfribidi-bin - 1.0.8-2ubuntu0.1
o libfribidi0 - 1.0.8-2ubuntu0.1
Ubuntu 18.04
o libfribidi-bin - 0.19.7-2ubuntu0.1
o libfribidi0 - 0.19.7-2ubuntu0.1
In general, a standard system update will make all the necessary changes.
References
o CVE-2022-25310
o CVE-2022-25308
o CVE-2022-25309
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