PHP up to 5.6.27/7.0.12 Serialization Zend/zend_exceptions.c infinite loop

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

Summaryinfo

A vulnerability marked as problematic has been reported in PHP up to 5.6.27/7.0.12. This affects an unknown function of the file Zend/zend_exceptions.c of the component Serialization. Performing a manipulation results in infinite loop. This vulnerability is cataloged as CVE-2016-7478. It is possible to initiate the attack remotely. There is no exploit available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as problematic, was found in PHP up to 5.6.27/7.0.12 (Programming Language Software). This affects an unknown code of the file Zend/zend_exceptions.c of the component Serialization. The manipulation with an unknown input leads to a infinite loop vulnerability. CWE is classifying the issue as CWE-835. The product contains an iteration or loop with an exit condition that cannot be reached, i.e., an infinite loop. This is going to have an impact on availability. The summary by CVE is:

Zend/zend_exceptions.c in PHP, possibly 5.x before 5.6.28 and 7.x before 7.0.13, allows remote attackers to cause a denial of service (infinite loop) via a crafted Exception object in serialized data, a related issue to CVE-2015-8876.

The bug was discovered 12/27/2016. The weakness was shared 01/11/2017 with CheckPoint (Website). The advisory is shared at blog.checkpoint.com. This vulnerability is uniquely identified as CVE-2016-7478 since 09/09/2016. 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. MITRE ATT&CK project uses the attack technique T1499 for this issue.

The vulnerability was handled as a non-public zero-day exploit for at least 2 days. During that time the estimated underground price was around $5k-$25k. The vulnerability scanner Nessus provides a plugin with the ID 96292 (FreeBSD : PHP -- multiple vulnerabilities (1b61ecef-cdb9-11e6-a9a5-b499baebfeaf)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family FreeBSD Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 11755 (PHP Multiple Remote Code Execution Vulnerabilities).

Upgrading to version 5.6.28 or 7.0.13 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 databases at Tenable (96292) and SecurityFocus (BID 95150†). The entries VDB-95170, VDB-95195, VDB-101538 and VDB-103667 are related to this item. Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

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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: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Infinite loop
CWE: CWE-835 / CWE-404
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: 96292
Nessus Name: FreeBSD : PHP -- multiple vulnerabilities (1b61ecef-cdb9-11e6-a9a5-b499baebfeaf)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 850584
OpenVAS Name: SuSE Update for php7 openSUSE-SU-2017:0588-1 (php7)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: PHP 5.6.28/7.0.13

Timelineinfo

09/09/2016 🔍
12/27/2016 +109 days 🔍
12/28/2016 +1 days 🔍
12/29/2016 +1 days 🔍
01/05/2017 +7 days 🔍
01/11/2017 +6 days 🔍
01/11/2017 +0 days 🔍
01/11/2017 +0 days 🔍
10/28/2022 +2116 days 🔍

Sourcesinfo

Product: php.org

Advisory: 73093
Organization: CheckPoint
Status: Not defined
Confirmation: 🔍

CVE: CVE-2016-7478 (🔍)
GCVE (CVE): GCVE-0-2016-7478
GCVE (VulDB): GCVE-100-95169
SecurityFocus: 95150 - PHP CVE-2016-7478 Remote Denial Of Service Vulnerability

See also: 🔍

Entryinfo

Created: 01/11/2017 15:04
Updated: 10/28/2022 11:07
Changes: 01/11/2017 15:04 (74), 10/15/2019 06:49 (7), 10/28/2022 11:07 (3)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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