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Ubuntu Security Notice USN-6671-1
February 29, 2024

php-nyholm-psr7 vulnerability
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A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 22.04 LTS (Available with Ubuntu Pro)

Summary:

An header injection issue was fixed in php-nyholm-psr7.

Software Description:
- php-nyholm-psr7: A super lightweight PSR-7 implementation

Details:

It was discovered that php-nyholm-psr7 incorrectly parsed HTTP
headers. A remote attacker could possibly use this issue to perform
an HTTP header injection attack.

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 22.04 LTS (Available with Ubuntu Pro):
  php-nyholm-psr7                 1.5.0-1ubuntu0.1~esm1

In general, a standard system update will make all the necessary changes.

References:
  https://ubuntu.com/security/notices/USN-6671-1
  CVE-2023-29197