PHP up to 5.5.37/5.6.23/7.0.8 XMLRPC simplestring.c simplestring_addn memory corruption

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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9.6$0-$5k0.00

Summaryinfo

A vulnerability was found in PHP up to 5.5.37/5.6.23/7.0.8. It has been classified as critical. Affected is the function simplestring_addn of the file simplestring.c of the component XMLRPC. The manipulation leads to memory corruption. This vulnerability is documented as CVE-2016-6296. The attack can be initiated remotely. There is not any exploit available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability was found in PHP up to 5.5.37/5.6.23/7.0.8 (Programming Language Software) and classified as very critical. This issue affects the function simplestring_addn of the file simplestring.c of the component XMLRPC. The manipulation with an unknown input leads to a memory corruption vulnerability. Using CWE to declare the problem leads to CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. Impacted is confidentiality, integrity, and availability.

The weakness was released 07/21/2016 as Version 7.0.9 as confirmed changelog (Website). The advisory is shared at php.net. The identification of this vulnerability is CVE-2016-6296 since 07/24/2016. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful 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 09/09/2022).

The vulnerability scanner Nessus provides a plugin with the ID 119979 (SUSE SLES12 Security Update : php5 (SUSE-SU-2016:2408-1)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family SuSE Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 175796 (Debian Security Update for php5 (DSA 3631-1) (HTTPoxy)).

Upgrading to version 5.5.38, 5.6.24 or 7.0.9 eliminates this vulnerability. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (119979) and SecurityFocus (BID 92095†). Entries connected to this vulnerability are available at VDB-90198, VDB-90199, VDB-90200 and VDB-90201. If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

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Website

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

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

NVD Base Score: 🔍

Exploitinginfo

Class: Memory corruption
CWE: CWE-119
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: 119979
Nessus Name: SUSE SLES12 Security Update : php5 (SUSE-SU-2016:2408-1)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 801105
OpenVAS Name: Apple Mac OS X Multiple Vulnerabilities-01 September-2016
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

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

Upgrade: PHP 5.5.38/5.6.24/7.0.9
Patch: e6c48213c22ed50b2b987b479fcc1ac709394caa

Timelineinfo

07/19/2016 🔍
07/21/2016 +2 days 🔍
07/21/2016 +0 days 🔍
07/22/2016 +1 days 🔍
07/24/2016 +2 days 🔍
07/25/2016 +1 days 🔍
01/02/2019 +891 days 🔍
09/09/2022 +1346 days 🔍

Sourcesinfo

Product: php.org

Advisory: Version 7.0.9
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2016-6296 (🔍)
GCVE (CVE): GCVE-0-2016-6296
GCVE (VulDB): GCVE-100-90221

OVAL: 🔍

SecurityFocus: 92095 - PHP '/xmlrpc/libxmlrpc/simplestring.c' Heap Buffer Overflow Vulnerability
SecurityTracker: 1036430

See also: 🔍

Entryinfo

Created: 07/22/2016 20:06
Updated: 09/09/2022 09:06
Changes: 07/22/2016 20:06 (59), 03/10/2019 08:26 (24), 09/09/2022 09:06 (6)
Complete: 🔍
Cache ID: 216::103

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