USN-5366-1: FriBidi vulnerabilities

Releases

• Ubuntu 21.10
• Ubuntu 20.04 LTS
• Ubuntu 18.04 ESM

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)

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

• libfribidi-bin - 1.0.8-2ubuntu0.1
• libfribidi0 - 1.0.8-2ubuntu0.1

Ubuntu 18.04

• 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

• CVE-2022-25310
• CVE-2022-25308
• CVE-2022-25309

Related notices

• USN-5366-2: libfribidi-bin, libfribidi-dev, libfribidi0, fribidi
• USN-5922-1: libfribidi-bin, libfribidi-dev, libfribidi0, fribidi