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CVE-2015-6835

Quick assessment

Affected
n/a n/a
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

PHP（PHP：Hypertext Preprocessor，PHP：超文本预处理器）是PHP Group和开放源代码社区共同维护的一种开源的通用计算机脚本语言。该语言主要用于Web开发，支持多种数据库及操作系统。 PHP的会话反序列化程序中存在安全漏洞，该漏洞源于程序没有正确处理多个php_var_unserialize调用。远程攻击者可借助特制的会话内容利用该漏洞执行任意代码，或造成拒绝服务（释放后重用）。以下版本受到影响：PHP 5.4.45之前版本，5.5.29之前5.5.x版本，5.6.13之前

AI Predicted 9.8 Difficulty: Moderate EPSS 31.90% · P98

Public Exploits 1

ExploitDB · 1 EDB-38123 [dos]
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I. Basic Information for CVE-2015-6835

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
The session deserializer in PHP before 5.4.45, 5.5.x before 5.5.29, and 5.6.x before 5.6.13 mishandles multiple php_var_unserialize calls, which allow remote attackers to execute arbitrary code or cause a denial of service (use-after-free) via crafted session content.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
PHP‘php_var_unserialize()’函数安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
PHP（PHP：Hypertext Preprocessor，PHP：超文本预处理器）是PHP Group和开放源代码社区共同维护的一种开源的通用计算机脚本语言。该语言主要用于Web开发，支持多种数据库及操作系统。 PHP的会话反序列化程序中存在安全漏洞，该漏洞源于程序没有正确处理多个php_var_unserialize调用。远程攻击者可借助特制的会话内容利用该漏洞执行任意代码，或造成拒绝服务（释放后重用）。以下版本受到影响：PHP 5.4.45之前版本，5.5.29之前5.5.x版本，5.6.13之前
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
- n/a n/a -

II. Public POCs for CVE-2015-6835

# POC Description Source Link Shenlong Link
1 None https://github.com/ockeghem/CVE-2015-6835-checker POC Details
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III. Intelligence Information for CVE-2015-6835

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Vendor Advisories for CVE-2015-6835 (4)

Other References for CVE-2015-6835 (2)

Same Patch Batch · n/a · 2016-05-16 · 27 CVEs total

CVE-2015-4642 PHP 操作系统命令注入漏洞
CVE-2016-3185 PHP 安全漏洞
CVE-2016-2554 PHP 基于栈的缓冲区溢出漏洞
CVE-2015-8874 PHP GD组件拒绝服务漏洞
CVE-2015-8873 PHP 远程拒绝服务漏洞
CVE-2015-8838 PHP 安全漏洞
CVE-2015-8835 PHP 安全漏洞
CVE-2015-6838 PHP‘xsltprocessor.c’拒绝服务漏洞
CVE-2015-6837 PHP‘valuePop()’函数拒绝服务漏洞
CVE-2015-6834 PHP 释放后重用漏洞
CVE-2015-5589 PHP 远程拒绝服务漏洞
CVE-2015-4644 PHP PostgreSQL扩展拒绝服务漏洞
CVE-2015-4643 PHP‘ftp_genlist()’函数整数溢出漏洞
CVE-2014-0236 PHP Fileinfo组件拒绝服务漏洞
CVE-2015-4605 PHP Fileinfo组件file 安全漏洞
CVE-2015-4604 PHP Fileinfo组件file 安全漏洞
CVE-2015-4603 PHP‘exception::getTraceAsString’远程任意代码执行漏洞
CVE-2015-4602 PHP‘incomplete_class.c’安全漏洞
CVE-2015-4601 PHP 安全漏洞
CVE-2015-4600 PHP 安全漏洞

Showing top 20 of 27 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same product: n/a
Same vendor: n/a

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