Cisco Content Services Switch 11500 HTTP Compression denial of service

| CVSS Meta Temp Score | Current Exploit Price (≈) | CTI Interest Score |
|---|---|---|
| 6.7 | $0-$5k | 0.00 |
Summary
A vulnerability classified as critical has been found in Cisco Content Services Switch 11500. This issue affects some unknown processing of the component HTTP Compression Handler. Performing a manipulation results in denial of service. This vulnerability is reported as CVE-2006-1631. No exploit exists. It is recommended to upgrade the affected component.
Details
A vulnerability, which was classified as critical, was found in Cisco Content Services Switch 11500. This affects some unknown processing of the component HTTP Compression Handler. The manipulation with an unknown input leads to a denial of service vulnerability. CWE is classifying the issue as CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. This is going to have an impact on availability. The summary by CVE is:
Unspecified vulnerability in the HTTP compression functionality in Cisco CSS 11500 Series Content Services switches allows remote attackers to cause a denial of service (device reload) via (1) "valid, but obsolete" or (2) "specially crafted" HTTP requests.
The bug was discovered 04/05/2006. The weakness was disclosed 04/06/2006 with Cisco (Website). It is possible to read the advisory at cisco.com. This vulnerability is uniquely identified as CVE-2006-1631 since 04/05/2006. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. The technical details are unknown and an exploit is not publicly available.
It is declared as proof-of-concept. The commercial vulnerability scanner Qualys is able to test this issue with plugin 43109 (Cisco 11500 Content Services Switch HTTP Compression Remote Denial of Service Vulnerability).
Upgrading eliminates this vulnerability. Applying a patch is able to eliminate this problem. The bugfix is ready for download at cisco.com. The best possible mitigation is suggested to be upgrading to the latest version.
The vulnerability is also documented in the databases at X-Force (25642), SecurityFocus (BID 17383†), OSVDB (24433†), Secunia (SA19552†) and SecurityTracker (ID 1015870†). Be aware that VulDB is the high quality source for vulnerability data.
Product
Vendor
Name
Version
License
Website
- Vendor: https://www.cisco.com/
CPE 2.3
CPE 2.2
CVSSv4
VulDB Vector: 🔍VulDB Reliability: 🔍
CVSSv3
VulDB Meta Base Score: 7.5VulDB Meta Temp Score: 6.7
VulDB Base Score: 7.5
VulDB Temp Score: 6.7
VulDB Vector: 🔍
VulDB Reliability: 🔍
CVSSv2
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| Vector | Complexity | Authentication | Confidentiality | Integrity | Availability |
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍
NVD Base Score: 🔍
Exploiting
Class: Denial of serviceCWE: CWE-404
CAPEC: 🔍
ATT&CK: 🔍
Physical: No
Local: No
Remote: Yes
Availability: 🔍
Status: Proof-of-Concept
EPSS Score: 🔍
EPSS Percentile: 🔍
Price Prediction: 🔍
Current Price Estimation: 🔍
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Qualys ID: 🔍
Qualys Name: 🔍
Threat Intelligence
Interest: 🔍Active Actors: 🔍
Active APT Groups: 🔍
Countermeasures
Recommended: UpgradeStatus: 🔍
0-Day Time: 🔍
Patch: cisco.com
Timeline
04/05/2006 🔍04/05/2006 🔍
04/05/2006 🔍
04/05/2006 🔍
04/05/2006 🔍
04/05/2006 🔍
04/06/2006 🔍
04/06/2006 🔍
04/06/2006 🔍
04/09/2006 🔍
04/10/2006 🔍
06/22/2025 🔍
Sources
Vendor: cisco.comAdvisory: cisco.com
Researcher: http://www.cisco.com
Organization: Cisco
Status: Confirmed
CVE: CVE-2006-1631 (🔍)
GCVE (CVE): GCVE-0-2006-1631
GCVE (VulDB): GCVE-100-2127
X-Force: 25642 - Cisco CSS HTTP compression denial of service, Medium Risk
SecurityFocus: 17383 - Cisco 11500 Content Services Switch HTTP Compression Remote Denial of Service Vulnerability
Secunia: 19552 - Cisco 11500 Content Services Switch HTTP Compression Denial of Service, Less Critical
OSVDB: 24433 - Cisco 11500 Content Services Switch HTTP Compression DoS
SecurityTracker: 1015870
Vulnerability Center: 10941 - [cisco-sa-20060405-css] Cisco 11500 Content Services Switch DoS via HTTP Compression, Medium
Vupen: ADV-2006-1257
Entry
Created: 04/10/2006 11:21Updated: 06/22/2025 05:13
Changes: 04/10/2006 11:21 (83), 06/16/2019 10:47 (1), 06/22/2025 05:13 (18)
Complete: 🔍
Cache ID: 216:BE5:103
Be aware that VulDB is the high quality source for vulnerability data.
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