Update Protection against Squid Proxy TRACE Request Denial of Service Vulnerability
| Check Point Reference: | CPAI-2007-084 | |
| Date Published: | ||
| Severity: | ||
| Last Updated: | ||
| Source: | Secunia Advisory: SA24611 | |
| Industry Reference(s): | CVE-2007-1560 | |
| Protection Provided by: |
VPN-1
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| Who is Vulnerable? Squid Web Proxy Cache prior to 2.6.STABLE12 | ||
| Vulnerability Description A denial of service vulnerability has been reported in Squid proxy. The Squid proxy server is a popular open source, Internet proxy and web caching application. A remote attacker may exploit this issue to create a denial of service condition and crash the vulnerable application. |
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Update/Patch Available Upgrade to Squid version 2.6.STABLE12: Squid-Cache |
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Vulnerability Details The vulnerability is due to an error within the squid proxy when processing malformed HTTP TRACE requests. A remote attacker can exploit this flaw by specially crafting a TRACE request and sending it to a vulnerable system. Successful exploitation may allow an attacker to create a denial of service condition on an affected server. |
Protection Overview
By enabling this protection, SmartDefense will detect and block specially crafted TRACE requests sent to the Squid proxy server.
In order for the protection to be activated, update your VPN-1/InterSpect/Connectra product to the latest SmartDefense update. For information on how to update SmartDefense, go to SBP-2006-05, Protection tab and select the version of your choice.
To configure the defense, select your product from the list below and follow the related protection steps.
Additional Information
The update released on September 18, 2007 includes the following protections:
Squid Proxy TRACE Request Denial of Service Vulnerability (CPAI-2007-084)
Microsoft Exchange Server iCal Denial of Service Vulnerability (MS07-026) CPAI-2007-081
Microsoft Exchange SMTP MIME Vulnerability (MS07-026) CPAI-2007-094
Yahoo! Widgets YDP ActiveX Control Buffer Overflow Vulnerability (CPAI-2007-105)
Multiple Trend Micro ServerProtect Buffer Overflow Vulnerabilities (CPAI-2007-106)
VPN-1 NGX R65 & R62
How Can I Protect My Network?
1. In the SmartDefense tree, click Application Intelligence > Proxy Server Protections > Block Squid Proxy TRACE Request Vulnerability.
2. In the configuration pane, under Settings > Mode, check Active.
3. Install policy on all modules.
How Do I Know if My Network is Under Attack?
SmartView Tracker will log the following entries:
Attack Name: Proxy Server Enforcement
Attack Information: Squid proxy TRACE request detected
VPN-1 NGX R61, R60 & VPN-1 NG with Application Intelligence R55W
How Can I Protect My Network?
1. In the SmartDefense tree, click Application Intelligence > Proxy Server Protections.
2. Select the following protection:
Block Squid Proxy TRACE Request Vulnerability
3. Install security policy on all modules.
How Do I Know if My Network is Under Attack?
SmartView Tracker will log the following entries:
Attack Name: Proxy Server Enforcement
Attack Information: Squid proxy TRACE request detected
VPN-1 NG with Application Intelligence R55
How Can I Protect My Network?
1. In the SmartDefense tree, click Application Intelligence > Proxy Server Protections.
2. Select the following protection:
Block Squid Proxy TRACE Request Vulnerability
3. Install security policy on all modules.
How Do I Know if My Network is Under Attack?
Rule #99883 will appear on the SmartView Tracker.
VPN-1 VSX NGX
How Can I Protect My Network?
1. In the SmartDefense tree, click Application Intelligence > Proxy Server Protections.
2. Select the following protection:
Block Squid Proxy TRACE Request Vulnerability
3. Install security policy on all modules.
How Do I Know if My Network is Under Attack?
Rule #99883 will appear on the SmartView Tracker.
InterSpect NGX
How Can I Protect My Network?
1. In the left pane, select Profiles > Default Protection and select the SmartDefense page of the profile.
2.In the SmartDefense tree, click Application Intelligence > Proxy Server Protections.
3. Select the following protection:
Block Squid Proxy TRACE Request Vulnerability
4. Install policy on all modules.
How Do I Know if My Network is Under Attack?
SmartView Tracker will log the following entries:
Attack Name: Proxy Server Enforcement
Attack Information: Squid proxy TRACE request detected
InterSpect 2.0
How Can I Protect My Network?
1. In the SmartDefense tree, click Application Intelligence > Proxy Server Protections.
2. Select the following protection:
Block Squid Proxy TRACE Request Vulnerability
3. Install policy on all modules.
How Do I Know if My Network is Under Attack?
SmartView Tracker will log the following entries:
Attack Name: Proxy Server Enforcement
Attack Information: Squid proxy TRACE request detected
Connectra NGX R62 & R61
How Can I Protect My Network?
1. In the left-hand menu, click Security > SmartDefense > Application Intelligence.
2. In the Dynamic Attacks pane, select the following:
Block Squid Proxy TRACE Request Vulnerability
3. Install policy on all modules.
How Do I Know if My Network is Under Attack?
In case of an attack, the following log entries will be displayed:
Attack Name: Proxy Server Enforcement
Attack Information: Squid proxy TRACE request detected