PHP up to 8.1.32/8.2.28/8.3.22/8.4.9 Null Character fsockopen Hostname server-side request forgery

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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4.2$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as critical, has been found in PHP up to 8.1.32/8.2.28/8.3.22/8.4.9. Affected by this issue is the function fsockopen of the component Null Character Handler. Performing a manipulation of the argument Hostname results in server-side request forgery. This vulnerability is reported as CVE-2025-1220. The attack is possible to be carried out remotely. No exploit exists. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as problematic, was found in PHP up to 8.1.32/8.2.28/8.3.22/8.4.9. This affects the function fsockopen of the component Null Character Handler. The manipulation of the argument hostname with an unknown input leads to a server-side request forgery vulnerability. CWE is classifying the issue as CWE-918. The web server receives a URL or similar request from an upstream component and retrieves the contents of this URL, but it does not sufficiently ensure that the request is being sent to the expected destination. This is going to have an impact on confidentiality. The summary by CVE is:

In PHP versions:8.1.* before 8.1.33, 8.2.* before 8.2.29, 8.3.* before 8.3.23, 8.4.* before 8.4.10 some functions like fsockopen() lack validation that the hostname supplied does not contain null characters. This may lead to other functions like parse_url() treat the hostname in different way, thus opening way to security problems if the user code implements access checks before access using such functions.

The advisory is shared at github.com. This vulnerability is uniquely identified as CVE-2025-1220 since 02/11/2025. The exploitability is told to be difficult. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Technical details are known, but no exploit is available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 12/22/2025).

The vulnerability scanner Nessus provides a plugin with the ID 242042 (Fedora 42 : php (2025-2c344545bf)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 8.1.33, 8.2.29, 8.3.23 or 8.4.10 eliminates this vulnerability.

The vulnerability is also documented in the databases at Tenable (242042), EUVD (EUVD-2025-21274) and CERT Bund (WID-SEC-2025-1460). If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Affected

  • Debian Linux
  • Amazon Linux 2
  • Red Hat Enterprise Linux
  • Fedora Linux
  • Ubuntu Linux
  • SUSE Linux
  • Oracle Linux
  • SUSE openSUSE
  • RESF Rocky Linux
  • Xerox FreeFlow Print Server
  • Open Source PHP
  • cPanel cPanel/WHM

Productinfo

Type

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.2
VulDB Meta Temp Score: 4.2

VulDB Base Score: 3.7
VulDB Temp Score: 3.6
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 5.3
NVD Vector: 🔒

CNA Base Score: 3.7
CNA Vector (php): 🔒

CVSSv2info

AVACAuCIA
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💳💳💳💳💳💳
💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Server-side request forgery
CWE: CWE-918
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Nessus ID: 242042
Nessus Name: Fedora 42 : php (2025-2c344545bf)

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: PHP 8.1.33/8.2.29/8.3.23/8.4.10

Timelineinfo

02/11/2025 CVE reserved
07/14/2025 +152 days Advisory disclosed
07/14/2025 +0 days VulDB entry created
12/22/2025 +161 days VulDB entry last update

Sourcesinfo

Product: php.org

Advisory: GHSA-3cr5-j632-f35r
Status: Confirmed

CVE: CVE-2025-1220 (🔒)
GCVE (CVE): GCVE-0-2025-1220
GCVE (VulDB): GCVE-100-316317
EUVD: 🔒
CERT Bund: WID-SEC-2025-1460 - PHP: Mehrere Schwachstellen

Entryinfo

Created: 07/14/2025 08:04
Updated: 12/22/2025 22:26
Changes: 07/14/2025 08:04 (67), 07/14/2025 08:25 (2), 07/14/2025 08:46 (1), 07/22/2025 19:13 (12), 08/22/2025 14:37 (7), 12/20/2025 23:49 (1), 12/22/2025 22:26 (1)
Complete: 🔍
Cache ID: 216::103

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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