PHP up to 5.6.30 WDDX ext/wddx/wddx.c Parameter deserialization

CVSS Meta Temp Score
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CTI Interest Score
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6.3$0-$5k0.00

Summaryinfo

A vulnerability classified as problematic has been found in PHP up to 5.6.30. This affects an unknown function of the file ext/wddx/wddx.c of the component WDDX Handler. This manipulation as part of Parameter causes deserialization. This vulnerability is registered as CVE-2017-11143. Remote exploitation of the attack is possible. No exploit is available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability classified as problematic was found in PHP up to 5.6.30 (Programming Language Software). Affected by this vulnerability is some unknown processing of the file ext/wddx/wddx.c of the component WDDX Handler. The manipulation as part of a Parameter leads to a deserialization vulnerability. The CWE definition for the vulnerability is CWE-502. The product deserializes untrusted data without sufficiently verifying that the resulting data will be valid. As an impact it is known to affect availability. The summary by CVE is:

In PHP before 5.6.31, an invalid free in the WDDX deserialization of boolean parameters could be used by attackers able to inject XML for deserialization to crash the PHP interpreter, related to an invalid free for an empty boolean element in ext/wddx/wddx.c.

The bug was discovered 07/06/2017. The weakness was published 07/10/2017 (oss-sec). It is possible to read the advisory at openwall.com. This vulnerability is known as CVE-2017-11143 since 07/10/2017. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Technical details of the vulnerability are known, but there is no available exploit.

The vulnerability was handled as a non-public zero-day exploit for at least 4 days. During that time the estimated underground price was around $5k-$25k. The vulnerability scanner Nessus provides a plugin with the ID 101908 (Debian DLA-1034-1 : php5 security update), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Debian Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 196874 (Ubuntu Security Notification for Php5, Php7.0 Vulnerabilities (USN-3382-1)).

Upgrading to version 5.6.31 eliminates this vulnerability. A possible mitigation has been published 2 weeks after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (101908) and SecurityFocus (BID 99553†). Similar entries are available at VDB-97454, VDB-103373, VDB-103374 and VDB-103376. Be aware that VulDB is the high quality source for vulnerability data.

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.4
VulDB Meta Temp Score: 6.3

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
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Exploitinginfo

Class: Deserialization
CWE: CWE-502 / CWE-20
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: 101908
Nessus Name: Debian DLA-1034-1 : php5 security update
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 100734
OpenVAS Name: PHP WDDX Deserialization Denial of Service Vulnerability - (Windows)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Upgrade: PHP 5.6.31
Patch: 2aae60461c2ff7b7fbcdd194c789ac841d0747d7

Timelineinfo

07/06/2017 🔍
07/10/2017 +4 days 🔍
07/10/2017 +0 days 🔍
07/10/2017 +0 days 🔍
07/10/2017 +0 days 🔍
07/11/2017 +1 days 🔍
07/21/2017 +10 days 🔍
07/24/2017 +3 days 🔍
12/12/2022 +1967 days 🔍

Sourcesinfo

Product: php.org

Advisory: RHSA-2018:1296
Researcher: varsleak.
Status: Not defined
Confirmation: 🔍

CVE: CVE-2017-11143 (🔍)
GCVE (CVE): GCVE-0-2017-11143
GCVE (VulDB): GCVE-100-103375

OVAL: 🔍

SecurityFocus: 99553 - PHP CVE-2017-11143 Denial of Service Vulnerability

See also: 🔍

Entryinfo

Created: 07/11/2017 12:44
Updated: 12/12/2022 09:27
Changes: 07/11/2017 12:44 (80), 10/24/2019 16:14 (5), 12/31/2020 13:05 (3), 12/12/2022 09:27 (5)
Complete: 🔍
Cache ID: 216::103

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