Vulnerability Monitor

The vendors, products, and vulnerabilities you care about

CVE-2011-3368


The mod_proxy module in the Apache HTTP Server 1.3.x through 1.3.42, 2.0.x through 2.0.64, and 2.2.x through 2.2.21 does not properly interact with use of (1) RewriteRule and (2) ProxyPassMatch pattern matches for configuration of a reverse proxy, which allows remote attackers to send requests to intranet servers via a malformed URI containing an initial @ (at sign) character.


Security Impact Summary

CVE-2011-3368 is a security vulnerability that . Impacting 1 product from apache organizations running these solutions should prioritize assessment and patching.

Historical Context

Documented in 2011, this vulnerability occurred amid the cloud computing expansion era, where traditional network perimeter security models were being reevaluated. Organizations were transitioning from isolated infrastructure to interconnected systems, creating new attack surfaces that vulnerabilities like this could exploit.


Published

2011-10-05T22:55:02.643

Last Modified

2025-04-11T00:51:21.963

Status

Deferred

Source

[email protected]

Severity

CVSSv2: 5.0 (MEDIUM)

CVSSv2 Vector

AV:N/AC:L/Au:N/C:P/I:N/A:N

  • Access Vector: NETWORK
  • Access Complexity: LOW
  • Authentication: NONE
  • Confidentiality Impact: PARTIAL
  • Integrity Impact: NONE
  • Availability Impact: NONE
Exploitability Score

10.0

Impact Score

2.9

Weaknesses
  • Type: Primary
    CWE-20

Affected Vendors & Products
Type Vendor Product Version/Range Vulnerable?
Application apache http_server 1.3 Yes
Application apache http_server 1.3.0 Yes
Application apache http_server 1.3.1 Yes
Application apache http_server 1.3.1.1 Yes
Application apache http_server 1.3.2 Yes
Application apache http_server 1.3.3 Yes
Application apache http_server 1.3.4 Yes
Application apache http_server 1.3.5 Yes
Application apache http_server 1.3.6 Yes
Application apache http_server 1.3.7 Yes
Application apache http_server 1.3.8 Yes
Application apache http_server 1.3.9 Yes
Application apache http_server 1.3.10 Yes
Application apache http_server 1.3.11 Yes
Application apache http_server 1.3.12 Yes
Application apache http_server 1.3.13 Yes
Application apache http_server 1.3.14 Yes
Application apache http_server 1.3.15 Yes
Application apache http_server 1.3.16 Yes
Application apache http_server 1.3.17 Yes
Application apache http_server 1.3.18 Yes
Application apache http_server 1.3.19 Yes
Application apache http_server 1.3.20 Yes
Application apache http_server 1.3.22 Yes
Application apache http_server 1.3.23 Yes
Application apache http_server 1.3.24 Yes
Application apache http_server 1.3.25 Yes
Application apache http_server 1.3.26 Yes
Application apache http_server 1.3.27 Yes
Application apache http_server 1.3.28 Yes
Application apache http_server 1.3.29 Yes
Application apache http_server 1.3.30 Yes
Application apache http_server 1.3.31 Yes
Application apache http_server 1.3.32 Yes
Application apache http_server 1.3.33 Yes
Application apache http_server 1.3.34 Yes
Application apache http_server 1.3.35 Yes
Application apache http_server 1.3.36 Yes
Application apache http_server 1.3.37 Yes
Application apache http_server 1.3.38 Yes
Application apache http_server 1.3.39 Yes
Application apache http_server 1.3.41 Yes
Application apache http_server 1.3.42 Yes
Application apache http_server 1.3.65 Yes
Application apache http_server 1.3.68 Yes
Application apache http_server 2.0 Yes
Application apache http_server 2.0.9 Yes
Application apache http_server 2.0.28 Yes
Application apache http_server 2.0.28 Yes
Application apache http_server 2.0.32 Yes
Application apache http_server 2.0.32 Yes
Application apache http_server 2.0.34 Yes
Application apache http_server 2.0.35 Yes
Application apache http_server 2.0.36 Yes
Application apache http_server 2.0.37 Yes
Application apache http_server 2.0.38 Yes
Application apache http_server 2.0.39 Yes
Application apache http_server 2.0.40 Yes
Application apache http_server 2.0.41 Yes
Application apache http_server 2.0.42 Yes
Application apache http_server 2.0.43 Yes
Application apache http_server 2.0.44 Yes
Application apache http_server 2.0.45 Yes
Application apache http_server 2.0.46 Yes
Application apache http_server 2.0.47 Yes
Application apache http_server 2.0.48 Yes
Application apache http_server 2.0.49 Yes
Application apache http_server 2.0.50 Yes
Application apache http_server 2.0.51 Yes
Application apache http_server 2.0.52 Yes
Application apache http_server 2.0.53 Yes
Application apache http_server 2.0.54 Yes
Application apache http_server 2.0.55 Yes
Application apache http_server 2.0.56 Yes
Application apache http_server 2.0.57 Yes
Application apache http_server 2.0.58 Yes
Application apache http_server 2.0.59 Yes
Application apache http_server 2.0.60 Yes
Application apache http_server 2.0.61 Yes
Application apache http_server 2.0.63 Yes
Application apache http_server 2.0.64 Yes
Application apache http_server 2.2.0 Yes
Application apache http_server 2.2.1 Yes
Application apache http_server 2.2.2 Yes
Application apache http_server 2.2.3 Yes
Application apache http_server 2.2.4 Yes
Application apache http_server 2.2.6 Yes
Application apache http_server 2.2.8 Yes
Application apache http_server 2.2.9 Yes
Application apache http_server 2.2.10 Yes
Application apache http_server 2.2.11 Yes
Application apache http_server 2.2.12 Yes
Application apache http_server 2.2.13 Yes
Application apache http_server 2.2.14 Yes
Application apache http_server 2.2.15 Yes
Application apache http_server 2.2.16 Yes
Application apache http_server 2.2.18 Yes
Application apache http_server 2.2.19 Yes
Application apache http_server 2.2.20 Yes
Application apache http_server 2.2.21 Yes

References

How SecUtils Interprets This CVE

SecUtils normalizes and enriches National Vulnerability Database (NVD) records by standardizing vendor and product identifiers, aggregating vulnerability metadata from both NVD and MITRE sources, and providing structured context for security teams. For apache's affected products, we extract Common Platform Enumeration (CPE) data, Common Weakness Enumeration (CWE) classifications, CVSS severity metrics, and reference data to enable rapid vulnerability prioritization and asset correlation. This record contains no exploit code, proof-of-concept instructions, or attack methodologies—only defensive intelligence necessary for patch management, risk assessment, and security operations.