Ubuntu Security Notice 5366-1 - 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. 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.
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Ubuntu Security Notice USN-5366-1
April 07, 2022
fribidi vulnerabilities
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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