PHP up to 7.3.15/7.4.3 UTF-32LE Encoding mb_strtolower stack-based overflow

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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7.3$0-$5k0.00

Summaryinfo

A vulnerability labeled as critical has been found in PHP up to 7.3.15/7.4.3. This affects the function mb_strtolower of the component UTF-32LE Encoding Handler. The manipulation results in stack-based overflow. This vulnerability is cataloged as CVE-2020-7065. The attack may be launched remotely. There is no exploit available. The affected component should be upgraded.

Detailsinfo

A vulnerability was found in PHP up to 7.3.15/7.4.3 (Programming Language Software). It has been classified as critical. Affected is the function mb_strtolower of the component UTF-32LE Encoding Handler. The manipulation with an unknown input leads to a stack-based overflow vulnerability. CWE is classifying the issue as CWE-121. A stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function). This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

In PHP versions 7.3.x below 7.3.16 and 7.4.x below 7.4.4, while using mb_strtolower() function with UTF-32LE encoding, certain invalid strings could cause PHP to overwrite stack-allocated buffer. This could lead to memory corruption, crashes and potentially code execution.

The weakness was shared 04/01/2020. This vulnerability is traded as CVE-2020-7065 since 01/15/2020. 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.

Upgrading to version 7.3.16 or 7.4.4 eliminates this vulnerability.

The entries VDB-152485 and VDB-152483 are related to this item. Once again VulDB remains the best source for vulnerability data.

Productinfo

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Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.4
VulDB Meta Temp Score: 7.3

VulDB Base Score: 7.3
VulDB Temp Score: 7.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.4
NVD Vector: 🔍

CNA Base Score: 7.4
CNA Vector (PHP Group): 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Stack-based overflow
CWE: CWE-121 / 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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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: PHP 7.3.16/7.4.4

Timelineinfo

01/15/2020 🔍
04/01/2020 +77 days 🔍
04/01/2020 +0 days 🔍
05/12/2024 +1502 days 🔍

Sourcesinfo

Product: php.org

Advisory: 79371
Status: Not defined
Confirmation: 🔍

CVE: CVE-2020-7065 (🔍)
GCVE (CVE): GCVE-0-2020-7065
GCVE (VulDB): GCVE-100-152484
See also: 🔍

Entryinfo

Created: 04/01/2020 08:37
Updated: 05/12/2024 17:35
Changes: 04/01/2020 08:37 (38), 04/01/2020 08:42 (12), 10/05/2020 15:41 (1), 12/02/2021 12:41 (4), 05/12/2024 17:28 (17), 05/12/2024 17:35 (20)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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