CVE-2024-2757

PHP mb_encode_mimeheader runs endlessly for some inputs

Description

In PHP 8.3.* before 8.3.5, function mb_encode_mimeheader() runs endlessly for some inputs that contain long strings of non-space characters followed by a space. This could lead to a potential DoS attack if a hostile user sends data to an application that uses this function.

Category

7.5
CVSS
Severity: High
CVSS 3.1 •
EPSS 0.19%
Affected: PHP Group PHP
Published at:
Updated at:

References

Link Tags
https://github.com/php/php-src/security/advisories/GHSA-fjp9-9hwx-59fq
http://www.openwall.com/lists/oss-security/2024/04/12/11
https://security.netapp.com/advisory/ntap-20240510-0011/

Frequently Asked Questions

What is the severity of CVE-2024-2757?
CVE-2024-2757 has been scored as a high severity vulnerability.
How to fix CVE-2024-2757?
To fix CVE-2024-2757, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2024-2757 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2024-2757 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2024-2757?
CVE-2024-2757 affects PHP Group PHP.
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