PHP up to 7.0.20/7.1.6 International Components for Unicode msgformat_parse.c msgfmt_parse_message memory corruption

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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8.4$0-$5k0.00

Summaryinfo

A vulnerability marked as critical has been reported in PHP up to 7.0.20/7.1.6. This vulnerability affects the function msgfmt_parse_message of the file ext/intl/msgformat/msgformat_parse.c of the component International Components for Unicode. The manipulation leads to memory corruption. This vulnerability is uniquely identified as CVE-2017-11362. The attack is possible to be carried out remotely. No exploit exists. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability was found in PHP up to 7.0.20/7.1.6 (Programming Language Software) and classified as critical. This issue affects the function msgfmt_parse_message of the file ext/intl/msgformat/msgformat_parse.c of the component International Components for Unicode. 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 summary by CVE is:

In PHP 7.x before 7.0.21 and 7.1.x before 7.1.7, ext/intl/msgformat/msgformat_parse.c does not restrict the locale length, which allows remote attackers to cause a denial of service (stack-based buffer overflow and application crash) or possibly have unspecified other impact within International Components for Unicode (ICU) for C/C++ via a long first argument to the msgfmt_parse_message function.

The bug was discovered 11/07/2016. The weakness was disclosed 07/17/2017 (Website). It is possible to read the advisory at bugs.php.net. The identification of this vulnerability is CVE-2017-11362 since 07/16/2017. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. 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 252 days. During that time the estimated underground price was around $5k-$25k. The vulnerability scanner Nessus provides a plugin with the ID 102416 (Ubuntu 14.04 LTS / 16.04 LTS / 17.04 : php5, php7.0 vulnerabilities (USN-3382-1)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Ubuntu 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 7.0.21 or 7.1.7 eliminates this vulnerability. A possible mitigation has been published 4 weeks after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (102416). The entries VDB-95169, VDB-95170, VDB-95195 and VDB-97454 are pretty similar. Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Type

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.5
VulDB Meta Temp Score: 8.4

VulDB Base Score: 7.3
VulDB Temp Score: 7.0
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: 102416
Nessus Name: Ubuntu 14.04 LTS / 16.04 LTS / 17.04 : php5, php7.0 vulnerabilities (USN-3382-1)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 103043
OpenVAS Name: PHP Denial of Service Vulnerability - Aug17 (Windows)
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 7.0.21/7.1.7

Timelineinfo

11/07/2016 🔍
07/16/2017 +251 days 🔍
07/17/2017 +1 days 🔍
07/17/2017 +0 days 🔍
07/18/2017 +1 days 🔍
08/10/2017 +23 days 🔍
08/11/2017 +1 days 🔍
12/13/2022 +1950 days 🔍

Sourcesinfo

Product: php.org

Advisory: USN-3382-1
Status: Not defined
Confirmation: 🔍

CVE: CVE-2017-11362 (🔍)
GCVE (CVE): GCVE-0-2017-11362
GCVE (VulDB): GCVE-100-103667
See also: 🔍

Entryinfo

Created: 07/18/2017 09:11
Updated: 12/13/2022 07:29
Changes: 07/18/2017 09:11 (76), 10/26/2019 17:37 (3), 12/13/2022 07:23 (4), 12/13/2022 07:29 (1)
Complete: 🔍
Cache ID: 216::103

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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