Vulnerabilities > CVE-2007-2952 - Improper Restriction of Operations Within the Bounds of A Memory Buffer vulnerability in Blue Coat Systems Filter and K9 web Protection

047910
CVSS 9.3 - CRITICAL
Attack vector
NETWORK
Attack complexity
MEDIUM
Privileges required
NONE
Confidentiality impact
COMPLETE
Integrity impact
COMPLETE
Availability impact
COMPLETE
network
blue-coat-systems
CWE-119
critical
NVD
Published: 2008-08-01
Updated: 2018-10-16

Summary

Multiple stack-based buffer overflows in the filter service (aka k9filter.exe) in Blue Coat K9 Web Protection 3.2.44 with Filter 3.2.32 allow (1) remote attackers to execute arbitrary code via a long HTTP Referer header to the K9 Web Protection Administration interface and (2) man-in-the-middle attackers to execute arbitrary code via an HTTP response with a long HTTP version field.

Vulnerable Configurations

Part Description Count
Application
Blue_Coat_Systems
2

Common Weakness Enumeration (CWE)

Common Attack Pattern Enumeration and Classification (CAPEC)

  • Buffer Overflow via Environment Variables
    This attack pattern involves causing a buffer overflow through manipulation of environment variables. Once the attacker finds that they can modify an environment variable, they may try to overflow associated buffers. This attack leverages implicit trust often placed in environment variables.
  • Overflow Buffers
    Buffer Overflow attacks target improper or missing bounds checking on buffer operations, typically triggered by input injected by an attacker. As a consequence, an attacker is able to write past the boundaries of allocated buffer regions in memory, causing a program crash or potentially redirection of execution as per the attackers' choice.
  • Client-side Injection-induced Buffer Overflow
    This type of attack exploits a buffer overflow vulnerability in targeted client software through injection of malicious content from a custom-built hostile service.
  • Filter Failure through Buffer Overflow
    In this attack, the idea is to cause an active filter to fail by causing an oversized transaction. An attacker may try to feed overly long input strings to the program in an attempt to overwhelm the filter (by causing a buffer overflow) and hoping that the filter does not fail securely (i.e. the user input is let into the system unfiltered).
  • MIME Conversion
    An attacker exploits a weakness in the MIME conversion routine to cause a buffer overflow and gain control over the mail server machine. The MIME system is designed to allow various different information formats to be interpreted and sent via e-mail. Attack points exist when data are converted to MIME compatible format and back.

Seebug

  • bulletinFamilyexploit
    descriptionBUGTRAQ ID: 30464 CVE(CAN) ID: CVE-2007-2952 K9 Web Protection是家用电脑上所使用的内容过滤解决方案，允许用户控制可访问的Internet内容。 K9 Web Protection的过滤服务（k9filter.exe）没有正确地处理从中央服务器（sp.cwfservice.net）所返回的HTTP版本信息，如果远程攻击者劫持了发送给中央服务器的请求并重新定向到恶意服务的话，则包含有超长HTTP版本信息的响应就可以触发栈溢出，导致在用户系统上执行任意指令。 Blue Coat Systems K9 Web Protection 3.2.44 Blue Coat Systems ----------------- 目前厂商还没有提供补丁或者升级程序，我们建议使用此软件的用户随时关注厂商的主页以获取最新版本： <a href=http://www.bluecoat.com/ target=_blank>http://www.bluecoat.com/</a>
    idSSV:3760
    last seen2017-11-19
    modified2008-08-03
    published2008-08-03
    reporterRoot
    titleBlue Coat K9 Web Protection HTTP响应栈溢出漏洞
  • bulletinFamilyexploit
    descriptionBUGTRAQ ID: 30463 CVE(CAN) ID: CVE-2007-2952 K9 Web Protection是家用电脑上所使用的内容过滤解决方案，允许用户控制可访问的Internet内容。 在访问基于Web的管理接口时K9 Web Protection的过滤服务（k9filter.exe）没有正确地处理Referer头。如果用户访问了恶意站点并向该接口返回了超长的Referer头，就可以触发栈溢出，导致执行任意指令。 Blue Coat Systems K9 Web Protection 3.2.44 Blue Coat Systems ----------------- 目前厂商还没有提供补丁或者升级程序，我们建议使用此软件的用户随时关注厂商的主页以获取最新版本： <a href=http://www.bluecoat.com/ target=_blank>http://www.bluecoat.com/</a>
    idSSV:3759
    last seen2017-11-19
    modified2008-08-03
    published2008-08-03
    reporterRoot
    titleBlue Coat K9 Web Protection Referer头栈溢出漏洞

References