PHP up to 5.6.37/7.0.31/7.1.21/7.2.9 Apache2 sapi_apache2.c php_handler cross site scripting

CVSS Meta Temp Score
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CTI Interest Score
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5.1$0-$5k0.00

A vulnerability, which was classified as critical, was found in PHP up to 5.6.37/7.0.31/7.1.21/7.2.9 (Programming Language Software). This affects the function php_handler of the file sapi/apache2handler/sapi_apache2.c of the component Apache2. The manipulation with an unknown input leads to a cross site scripting vulnerability. CWE is classifying the issue as CWE-79. The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. This is going to have an impact on integrity. The summary by CVE is:

The Apache2 component in PHP before 5.6.38, 7.0.x before 7.0.32, 7.1.x before 7.1.22, and 7.2.x before 7.2.10 allows XSS via the body of a "Transfer-Encoding: chunked" request, because the bucket brigade is mishandled in the php_handler function in sapi/apache2handler/sapi_apache2.c.

The bug was discovered 09/13/2018. The weakness was published 09/16/2018 (Website). It is possible to read the advisory at php.net. This vulnerability is uniquely identified as CVE-2018-17082 since 09/16/2018. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. It demands that the victim is doing some kind of user interaction. Technical details of the vulnerability are known, but there is no available exploit. The attack technique deployed by this issue is T1059.007 according to MITRE ATT&CK.

The vulnerability scanner Nessus provides a plugin with the ID 117498 (PHP 7.0.x < 7.0.32 Transfer-Encoding Parameter XSS Vulnerability), which helps to determine the existence of the flaw in a target environment. It is assigned to the family CGI abuses and running in the context r. The commercial vulnerability scanner Qualys is able to test this issue with plugin 176543 (Debian Security Update for php7.0 (DSA 4353-1)).

Upgrading to version 5.6.38, 7.0.32, 7.1.22 or 7.2.10 eliminates this vulnerability. A possible mitigation has been published even before and not after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (117498). Similar entries are available at 67740, 90573, 90611 and 90612.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

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CVSSv3info

VulDB Meta Base Score: 5.2
VulDB Meta Temp Score: 5.1

VulDB Base Score: 4.3
VulDB Temp Score: 4.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 6.1
NVD Vector: 🔍

CVSSv2info

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VulDB Base Score: 🔍
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Exploitinginfo

Class: Cross site scripting
CWE: CWE-79 / CWE-74 / CWE-707
ATT&CK: T1059.007

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 117498
Nessus Name: PHP 7.0.x < 7.0.32 Transfer-Encoding Parameter XSS Vulnerability
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: PHP 5.6.38/7.0.32/7.1.22/7.2.10
Patch: github.com

Timelineinfo

09/13/2018 🔍
09/13/2018 +0 days 🔍
09/14/2018 +1 days 🔍
09/16/2018 +1 days 🔍
09/16/2018 +0 days 🔍
09/16/2018 +0 days 🔍
09/16/2018 +0 days 🔍
12/07/2018 +82 days 🔍
05/16/2023 +1621 days 🔍

Sourcesinfo

Product: php.org

Advisory: 76582
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2018-17082 (🔍)
OVAL: 🔍

SecurityFocus: 106143 - PHP CVE-2018-19935 Denial of Service Vulnerability

See also: 🔍

Entryinfo

Created: 09/16/2018 20:28
Updated: 05/16/2023 13:20
Changes: 09/16/2018 20:28 (77), 03/24/2020 09:15 (5), 05/16/2023 13:13 (5), 05/16/2023 13:20 (1)
Complete: 🔍

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