PHP up to 5.5.36/5.6.22 SPL Extension spl_directory.c SplFileObject::fread integer overflow

CVSS Meta Temp Score
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CTI Interest Score
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9.6$0-$5k0.00

Summaryinfo

A vulnerability classified as problematic was found in PHP up to 5.5.36/5.6.22. The impacted element is the function SplFileObject::fread of the file spl_directory.c of the component SPL Extension. The manipulation results in integer overflow. This vulnerability is identified as CVE-2016-5770. The attack can be executed remotely. There is not any exploit available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability was found in PHP up to 5.5.36/5.6.22 (Programming Language Software). It has been classified as critical. Affected is the function SplFileObject::fread of the file spl_directory.c of the component SPL Extension. The manipulation with an unknown input leads to a integer overflow vulnerability. CWE is classifying the issue as CWE-190. The product performs a calculation that can produce an integer overflow or wraparound, when the logic assumes that the resulting value will always be larger than the original value. This can introduce other weaknesses when the calculation is used for resource management or execution control. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

Integer overflow in the SplFileObject::fread function in spl_directory.c in the SPL extension in PHP before 5.5.37 and 5.6.x before 5.6.23 allows remote attackers to cause a denial of service or possibly have unspecified other impact via a large integer argument, a related issue to CVE-2016-5096.

The weakness was released 08/07/2016 (Website). The advisory is shared for download at lists.apple.com. This vulnerability is traded as CVE-2016-5770 since 06/23/2016. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. There are known technical details, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 91839 (FreeBSD : php -- multiple vulnerabilities (66d77c58-3b1d-11e6-8e82-002590263bf5)), 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 175784 (Debian Security Update for php5 (DSA 3618-1)).

Upgrading to version 5.5.37 or 5.6.23 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 (91839) and SecurityFocus (BID 91403†). Entries connected to this vulnerability are available at VDB-90632, VDB-90633, VDB-90634 and VDB-90635. Once again VulDB remains the best source for vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 9.8
VulDB Meta Temp Score: 9.6

VulDB Base Score: 9.8
VulDB Temp Score: 9.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 9.8
NVD Vector: 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Integer overflow
CWE: CWE-190 / CWE-189
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: 91839
Nessus Name: FreeBSD : php -- multiple vulnerabilities (66d77c58-3b1d-11e6-8e82-002590263bf5)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 14611
OpenVAS Name: Amazon Linux Local Check: alas-2016-728
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 5.5.37/5.6.23
Patch: github.com

Timelineinfo

06/23/2016 🔍
06/23/2016 +0 days 🔍
06/25/2016 +2 days 🔍
06/27/2016 +2 days 🔍
08/07/2016 +41 days 🔍
08/07/2016 +0 days 🔍
08/08/2016 +1 days 🔍
09/13/2022 +2227 days 🔍

Sourcesinfo

Product: php.org

Advisory: 72262
Status: Not defined
Confirmation: 🔍

CVE: CVE-2016-5770 (🔍)
GCVE (CVE): GCVE-0-2016-5770
GCVE (VulDB): GCVE-100-90636

OVAL: 🔍

SecurityFocus: 91403 - PHP 'ext/spl/spl_directory.c' Type Confusion Remote Denial Of Service Vulnerability

See also: 🔍

Entryinfo

Created: 08/08/2016 15:23
Updated: 09/13/2022 09:25
Changes: 08/08/2016 15:23 (58), 03/22/2019 08:50 (22), 09/13/2022 09:22 (5), 09/13/2022 09:25 (1)
Complete: 🔍
Cache ID: 216:DE6:103

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