[USN-5227-1] Pillow vulnerabilities

========================================================================== Ubuntu Security Notice USN-5227-1 January 13, 2022
pillow vulnerabilities ==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
– Ubuntu 21.10 – Ubuntu 21.04 – Ubuntu 20.04 LTS – Ubuntu 18.04 LTS
Summary:
Several security issues were fixed in Pillow.
Software Description: – pillow: Python Imaging Library
Details:
It was discovered that Pillow incorrectly handled certain image files. If a user or automated system were tricked into opening a specially-crafted file, a remote attacker could cause Pillow to hang, resulting in a denial of service. (CVE-2021-23437)
It was discovered that Pillow incorrectly handled certain image files. If a user or automated system were tricked into opening a specially-crafted file, a remote attacker could cause Pillow to crash, resulting in a denial of service. This issue ony affected Ubuntu 18.04 LTS, Ubuntu 20.04 LTS, and Ubuntu 21.04. (CVE-2021-34552)
It was discovered that Pillow incorrectly handled certain image files. If a user or automated system were tricked into opening a specially-crafted file, a remote attacker could cause Pillow to crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2022-22815)
It was discovered that Pillow incorrectly handled certain image files. If a user or automated system were tricked into opening a specially-crafted file, a remote attacker could cause Pillow to crash, resulting in a denial of service. (CVE-2022-22816)
It was discovered that Pillow incorrectly handled certain image files. If a user or automated system were tricked into opening a specially-crafted file, a remote attacker could cause Pillow to crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2022-22817)
Update instructions:
The problem can be corrected by updating your system to the following package versions:
Ubuntu 21.10: python3-pil 8.1.2+dfsg-0.3ubuntu0.1
Ubuntu 21.04: python3-pil 8.1.2-1ubuntu0.2
Ubuntu 20.04 LTS: python3-pil 7.0.0-4ubuntu0.5
Ubuntu 18.04 LTS: python-pil 5.1.0-1ubuntu0.7 python3-pil 5.1.0-1ubuntu0.7
In general, a standard system update will make all the necessary changes.
References: ubuntu.com/security/notices/USN-5227-1 CVE-2021-23437, CVE-2021-34552, CVE-2022-22815, CVE-2022-22816, CVE-2022-22817
Package Information: launchpad.net/ubuntu/+source/pillow/8.1.2+dfsg-0.3ubuntu0.1 launchpad.net/ubuntu/+source/pillow/8.1.2-1ubuntu0.2 launchpad.net/ubuntu/+source/pillow/7.0.0-4ubuntu0.5 launchpad.net/ubuntu/+source/pillow/5.1.0-1ubuntu0.7