mod_proxy module for Apache ap_proxy_send_fb() buffer overflow

modproxy-approxysendfb-bo (55941) The risk level is classified as HighHigh Risk

Description:

The mod_proxy module for Apache is vulnerable to a heap-based buffer overflow, caused by an integer overflow error in the ap_proxy_send_fb() function. If the size of the "int" datatype is less than the "long" datatype, a remote attacker could overflow a buffer and execute arbitrary code on the system or cause the application to crash.

*CVSS:

Base Score: 6.8
  Access Vector: Network
  Access Complexity: Medium
  Authentication: None
  Confidentiality Impact: Partial
  Integrity Impact: Partial
  Availability Impact: Partial
 
Temporal Score: 5.3
  Exploitability: Proof-of-Concept
  Remediation Level: Official-Fix
  Report Confidence: Confirmed

Consequences:

Gain Access

Remedy:

Upgrade to the latest version of Apache (1.3.42 or later), available from the Apache Web site. See References.

References:

  • Apache.org Web Site: Changes with Apache 1.3.42.
  • Full-Disclosure Mailing List, Wed Jan 27 2010: Mod_proxy from apache 1.3 - Integer overflow which causes heap overflow.
  • BID-37966: Apache 1.3 mod_proxy HTTP Chunked Encoding Integer Overflow Vulnerability
  • CVE-2010-0010: Integer overflow in the ap_proxy_send_fb function in proxy/proxy_util.c in mod_proxy in the Apache HTTP Server before 1.3.42 on 64-bit platforms allows remote origin servers to cause a denial of service (daemon crash) or possibly execute arbitrary code via a large chunk size that triggers a heap-based buffer overflow.
  • OSVDB ID: 62009: Apache HTTP Server src/modules/proxy/proxy_util.c mod_proxy ap_proxy_send_fb() Function Overflow
  • SA38319: Apache mod_proxy "ap_proxy_send_fb()" Integer Truncation Vulnerability
  • SA44532: OpenVMS update for Secure Web Server
  • SECTRACK ID: 1023533: Apache mod_proxy Integer Overflow May Let Remote Users Execute Arbitrary Code

Platforms Affected:

  • Apache HTTP Server 1.3
  • Apache HTTP Server 1.3.0
  • Apache HTTP Server 1.3.1
  • Apache HTTP Server 1.3.1.1
  • Apache HTTP Server 1.3.10
  • Apache HTTP Server 1.3.11
  • Apache HTTP Server 1.3.12
  • Apache HTTP Server 1.3.13
  • Apache HTTP Server 1.3.14
  • Apache HTTP Server 1.3.15
  • Apache HTTP Server 1.3.16
  • Apache HTTP Server 1.3.17
  • Apache HTTP Server 1.3.18
  • Apache HTTP Server 1.3.19
  • Apache HTTP Server 1.3.2
  • Apache HTTP Server 1.3.20
  • Apache HTTP Server 1.3.22
  • Apache HTTP Server 1.3.23
  • Apache HTTP Server 1.3.24
  • Apache HTTP Server 1.3.25
  • Apache HTTP Server 1.3.26
  • Apache HTTP Server 1.3.27
  • Apache HTTP Server 1.3.28
  • Apache HTTP Server 1.3.29
  • Apache HTTP Server 1.3.3
  • Apache HTTP Server 1.3.30
  • Apache HTTP Server 1.3.31
  • Apache HTTP Server 1.3.32
  • Apache HTTP Server 1.3.33
  • Apache HTTP Server 1.3.34
  • Apache HTTP Server 1.3.35
  • Apache HTTP Server 1.3.36
  • Apache HTTP Server 1.3.37
  • Apache HTTP Server 1.3.38
  • Apache HTTP Server 1.3.39
  • Apache HTTP Server 1.3.4
  • Apache HTTP Server 1.3.41
  • HP OpenVMS 6.x
  • HP OpenVMS 7.x
  • HP OpenVMS 8.x

Reported:

Jan 28, 2010

The information within this database may change without notice. Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. In no event shall the author/distributor (IBM Internet Security Systems X-Force) be held liable for any damages whatsoever arising out of or in connection with the use or spread of this information.

For corrections or additions please email ignore thisxforceignore this@ignore thisus.ignore thisibm.comignore this

Return to the main page

* According to the Forum of Incident Response and Security Teams (FIRST), the Common Vulnerability Scoring System (CVSS) is an "industry open standard designed to convey vulnerability severity and help to determine urgency and priority of response." IBM PROVIDES THE CVSS SCORES "AS IS" WITHOUT WARRANTY OF ANY KIND, INCLUDING THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. CUSTOMERS ARE RESPONSIBLE FOR ASSESSING THE IMPACT OF ANY ACTUAL OR POTENTIAL SECURITY VULNERABILITY.
The information within this database may change without notice. Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. In no event shall IBM be held liable for any damages whatsoever arising out of or in connection with the use or spread of this information.

About IBM Internet Security Systems

IBM Internet Security Systems is a trusted security advisor to thousands of the world's leading businesses and governments, helping to provide pre-emptive protection for networks, desktops and servers. The IBM Proventia? integrated security platform is designed to automatically protect against both known and unknown threats, helping to keep networks up and running and shield customers from online attacks before they impact business assets. IBM Internet Security Systems products and services are based on the proactive security intelligence of its X-Force? research and development team ? an unequivocal world authority in vulnerability and threat research. The IBM Internet Security Systems product line is also complemented by comprehensive Managed Security Services and Professional Security Services. For more information, visit the IBM Internet Security Systems Web site at www.iss.net or call 800-776-2362.