Headline
Ubuntu Security Notice USN-6618-1
Ubuntu Security Notice 6618-1 - It was discovered that Pillow incorrectly handled certain long text arguments. An attacker could possibly use this issue to cause Pillow to consume resources, leading to a denial of service. This issue only affected Ubuntu 20.04 LTS, and Ubuntu 22.04 LTS. Duarte Santos discovered that Pillow incorrectly handled the environment parameter to PIL.ImageMath.eval. An attacker could possibly use this issue to execute arbitrary code.
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Ubuntu Security Notice USN-6618-1
January 30, 2024
pillow vulnerabilities
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 23.10
- Ubuntu 22.04 LTS
- Ubuntu 20.04 LTS
Summary:
Several security issues were fixed in Pillow.
Software Description:
- pillow: Python Imaging Library
Details:
It was discovered that Pillow incorrectly handled certain long text
arguments. An attacker could possibly use this issue to cause Pillow to
consume resources, leading to a denial of service. This issue only affected
Ubuntu 20.04 LTS, and Ubuntu 22.04 LTS. (CVE-2023-44271)
Duarte Santos discovered that Pillow incorrectly handled the environment
parameter to PIL.ImageMath.eval. An attacker could possibly use this issue
to execute arbitrary code. (CVE-2023-50447)
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 23.10:
python3-pil 10.0.0-1ubuntu0.1
Ubuntu 22.04 LTS:
python3-pil 9.0.1-1ubuntu0.2
Ubuntu 20.04 LTS:
python3-pil 7.0.0-4ubuntu0.8
In general, a standard system update will make all the necessary changes.
References:
https://ubuntu.com/security/notices/USN-6618-1
CVE-2023-44271, CVE-2023-50447
Package Information:
https://launchpad.net/ubuntu/+source/pillow/10.0.0-1ubuntu0.1
https://launchpad.net/ubuntu/+source/pillow/9.0.1-1ubuntu0.2
https://launchpad.net/ubuntu/+source/pillow/7.0.0-4ubuntu0.8
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Pillow through 10.1.0 allows PIL.ImageMath.eval Arbitrary Code Execution via the environment parameter, a different vulnerability than CVE-2022-22817 (which was about the expression parameter).
An issue was discovered in Pillow before 10.0.0. It is a Denial of Service that uncontrollably allocates memory to process a given task, potentially causing a service to crash by having it run out of memory. This occurs for truetype in ImageFont when textlength in an ImageDraw instance operates on a long text argument.
An issue was discovered in Pillow before 10.0.0. It is a Denial of Service that uncontrollably allocates memory to process a given task, potentially causing a service to crash by having it run out of memory. This occurs for truetype in ImageFont when textlength in an ImageDraw instance operates on a long text argument.