Resource exhaustion in Php
CVE-2024-2757
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.
Vulnerability class: DoS (Denial of Service)
EPSS: 0.019 (77.8th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- security@php.net (Exploit, Vendor Advisory)
- security@php.net (Mailing List)
- security@php.net (Third Party Advisory)
- af854a3a-2127-422b-91ae-364da2661108
Frequently asked questions
- What is CVE-2024-2757?
- CVE-2024-2757 is a high-severity vulnerability in Php, classified under Uncontrolled Resource Consumption. CVSS score: 7.5/10. Published 2024-04-29.
- How severe is CVE-2024-2757?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2024-2757 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.