CVE-2011-1499 Vulnerability Analysis & Exploit Details

CVE-2011-1499
Vulnerability Scoring

2.6
/10
Low Severity

Due to its limited impact, CVE-2011-1499 is considered a low-severity vulnerability.

Attack Complexity Details

  • Attack Complexity: High
    Exploits require significant effort and special conditions.
  • Attack Vector: Network
    Vulnerability is exploitable over a network without physical access.
  • Privileges Required: None
    No authentication is required for exploitation.
  • Scope:
    Impact is confined to the initially vulnerable component.
  • User Interaction: None
    No user interaction is necessary for exploitation.

CVE-2011-1499 Details

Status: Deferred

Last updated: 🕧 11 Apr 2025, 00:51 UTC
Originally published on: 🕥 29 Apr 2011, 22:55 UTC

Time between publication and last update: 5095 days

CVSS Release: version 2

CVE-2011-1499 Vulnerability Summary

CVE-2011-1499: acl.c in Tinyproxy before 1.8.3, when an Allow configuration setting specifies a CIDR block, permits TCP connections from all IP addresses, which makes it easier for remote attackers to hide the origin of web traffic by leveraging the open HTTP proxy server.

Assessing the Risk of CVE-2011-1499

Access Complexity Graph

The exploitability of CVE-2011-1499 depends on two key factors: attack complexity (the level of effort required to execute an exploit) and privileges required (the access level an attacker needs).

Exploitability Analysis for CVE-2011-1499

CVE-2011-1499 requires high complexity, reducing its exploitability but still posing a risk.

Understanding AC and PR

A lower complexity and fewer privilege requirements make exploitation easier. Security teams should evaluate these aspects to determine the urgency of mitigation strategies, such as patch management and access control policies.

Attack Complexity (AC) measures the difficulty in executing an exploit. A high AC means that specific conditions must be met, making an attack more challenging, while a low AC means the vulnerability can be exploited with minimal effort.

Privileges Required (PR) determine the level of system access necessary for an attack. Vulnerabilities requiring no privileges are more accessible to attackers, whereas high privilege requirements limit exploitation to authorized users with elevated access.

CVSS Score Breakdown Chart

Above is the CVSS Sub-score Breakdown for CVE-2011-1499, illustrating how Base, Impact, and Exploitability factors combine to form the overall severity rating. A higher sub-score typically indicates a more severe or easier-to-exploit vulnerability.

CIA Impact Analysis

Below is the Impact Analysis for CVE-2011-1499, showing how Confidentiality, Integrity, and Availability might be affected if the vulnerability is exploited. Higher values usually signal greater potential damage.

  • Confidentiality: None
    CVE-2011-1499 does not compromise confidentiality.
  • Integrity: None
    CVE-2011-1499 does not impact data integrity.
  • Availability: None
    CVE-2011-1499 does not affect system availability.

Exploit Prediction Scoring System (EPSS)

The EPSS score estimates the probability that this vulnerability will be exploited in the near future.

EPSS Score: 0.43% (probability of exploit)

EPSS Percentile: 74.71% (lower percentile = lower relative risk)
This vulnerability is less risky than approximately 25.290000000000006% of others.

CVE-2011-1499 References

External References

CWE Common Weakness Enumeration

CWE-16

Vulnerable Configurations

  • cpe:2.3:a:banu:tinyproxy:1.4.0:pre1:*:*:*:*:*:*
    cpe:2.3:a:banu:tinyproxy:1.4.0:pre1:*:*:*:*:*:*
  • cpe:2.3:a:banu:tinyproxy:1.4.0:pre3:*:*:*:*:*:*
    cpe:2.3:a:banu:tinyproxy:1.4.0:pre3:*:*:*:*:*:*
  • cpe:2.3:a:banu:tinyproxy:1.4.0:pre4:*:*:*:*:*:*
    cpe:2.3:a:banu:tinyproxy:1.4.0:pre4:*:*:*:*:*:*
  • cpe:2.3:a:banu:tinyproxy:1.4.0:pre5:*:*:*:*:*:*
    cpe:2.3:a:banu:tinyproxy:1.4.0:pre5:*:*:*:*:*:*
  • cpe:2.3:a:banu:tinyproxy:1.4.0:pre6:*:*:*:*:*:*
    cpe:2.3:a:banu:tinyproxy:1.4.0:pre6:*:*:*:*:*:*
  • cpe:2.3:a:banu:tinyproxy:1.4.1:*:*:*:*:*:*:*
    cpe:2.3:a:banu:tinyproxy:1.4.1:*:*:*:*:*:*:*
  • cpe:2.3:a:banu:tinyproxy:1.4.1.1:*:*:*:*:*:*:*
    cpe:2.3:a:banu:tinyproxy:1.4.1.1:*:*:*:*:*:*:*
  • cpe:2.3:a:banu:tinyproxy:1.4.1.2:*:*:*:*:*:*:*
    cpe:2.3:a:banu:tinyproxy:1.4.1.2:*:*:*:*:*:*:*
  • cpe:2.3:a:banu:tinyproxy:1.4.1.3:*:*:*:*:*:*:*
    cpe:2.3:a:banu:tinyproxy:1.4.1.3:*:*:*:*:*:*:*
  • cpe:2.3:a:banu:tinyproxy:1.4.1.4:*:*:*:*:*:*:*
    cpe:2.3:a:banu:tinyproxy:1.4.1.4:*:*:*:*:*:*:*
  • cpe:2.3:a:banu:tinyproxy:1.4.1.5:*:*:*:*:*:*:*
    cpe:2.3:a:banu:tinyproxy:1.4.1.5:*:*:*:*:*:*:*
  • cpe:2.3:a:banu:tinyproxy:1.4.2:*:*:*:*:*:*:*
    cpe:2.3:a:banu:tinyproxy:1.4.2:*:*:*:*:*:*:*
  • cpe:2.3:a:banu:tinyproxy:1.4.2.1:*:*:*:*:*:*:*
    cpe:2.3:a:banu:tinyproxy:1.4.2.1:*:*:*:*:*:*:*
  • cpe:2.3:a:banu:tinyproxy:1.4.2.2:*:*:*:*:*:*:*
    cpe:2.3:a:banu:tinyproxy:1.4.2.2:*:*:*:*:*:*:*
  • cpe:2.3:a:banu:tinyproxy:1.4.3:-:*:*:*:*:*:*
    cpe:2.3:a:banu:tinyproxy:1.4.3:-:*:*:*:*:*:*
  • cpe:2.3:a:banu:tinyproxy:1.4.3:pre6:*:*:*:*:*:*
    cpe:2.3:a:banu:tinyproxy:1.4.3:pre6:*:*:*:*:*:*
  • cpe:2.3:a:banu:tinyproxy:1.4.3:pre7:*:*:*:*:*:*
    cpe:2.3:a:banu:tinyproxy:1.4.3:pre7:*:*:*:*:*:*
  • cpe:2.3:a:banu:tinyproxy:1.4.4:pre1:*:*:*:*:*:*
    cpe:2.3:a:banu:tinyproxy:1.4.4:pre1:*:*:*:*:*:*
  • cpe:2.3:a:banu:tinyproxy:1.5.0:-:*:*:*:*:*:*
    cpe:2.3:a:banu:tinyproxy:1.5.0:-:*:*:*:*:*:*
  • cpe:2.3:a:banu:tinyproxy:1.5.0:rc1:*:*:*:*:*:*
    cpe:2.3:a:banu:tinyproxy:1.5.0:rc1:*:*:*:*:*:*
  • cpe:2.3:a:banu:tinyproxy:1.5.0:rc10:*:*:*:*:*:*
    cpe:2.3:a:banu:tinyproxy:1.5.0:rc10:*:*:*:*:*:*
  • cpe:2.3:a:banu:tinyproxy:1.5.0:rc2:*:*:*:*:*:*
    cpe:2.3:a:banu:tinyproxy:1.5.0:rc2:*:*:*:*:*:*
  • cpe:2.3:a:banu:tinyproxy:1.5.0:rc3:*:*:*:*:*:*
    cpe:2.3:a:banu:tinyproxy:1.5.0:rc3:*:*:*:*:*:*
  • cpe:2.3:a:banu:tinyproxy:1.5.0:rc4:*:*:*:*:*:*
    cpe:2.3:a:banu:tinyproxy:1.5.0:rc4:*:*:*:*:*:*
  • cpe:2.3:a:banu:tinyproxy:1.5.0:rc5:*:*:*:*:*:*
    cpe:2.3:a:banu:tinyproxy:1.5.0:rc5:*:*:*:*:*:*
  • cpe:2.3:a:banu:tinyproxy:1.5.0:rc6:*:*:*:*:*:*
    cpe:2.3:a:banu:tinyproxy:1.5.0:rc6:*:*:*:*:*:*
  • cpe:2.3:a:banu:tinyproxy:1.5.0:rc7:*:*:*:*:*:*
    cpe:2.3:a:banu:tinyproxy:1.5.0:rc7:*:*:*:*:*:*
  • cpe:2.3:a:banu:tinyproxy:1.5.0:rc8:*:*:*:*:*:*
    cpe:2.3:a:banu:tinyproxy:1.5.0:rc8:*:*:*:*:*:*
  • cpe:2.3:a:banu:tinyproxy:1.5.0:pre1:*:*:*:*:*:*
    cpe:2.3:a:banu:tinyproxy:1.5.0:pre1:*:*:*:*:*:*
  • cpe:2.3:a:banu:tinyproxy:1.5.0:pre2:*:*:*:*:*:*
    cpe:2.3:a:banu:tinyproxy:1.5.0:pre2:*:*:*:*:*:*
  • cpe:2.3:a:banu:tinyproxy:1.5.0:pre3:*:*:*:*:*:*
    cpe:2.3:a:banu:tinyproxy:1.5.0:pre3:*:*:*:*:*:*
  • cpe:2.3:a:banu:tinyproxy:1.5.0:pre4:*:*:*:*:*:*
    cpe:2.3:a:banu:tinyproxy:1.5.0:pre4:*:*:*:*:*:*
  • cpe:2.3:a:banu:tinyproxy:1.5.0:pre5:*:*:*:*:*:*
    cpe:2.3:a:banu:tinyproxy:1.5.0:pre5:*:*:*:*:*:*
  • cpe:2.3:a:banu:tinyproxy:1.5.0:pre6:*:*:*:*:*:*
    cpe:2.3:a:banu:tinyproxy:1.5.0:pre6:*:*:*:*:*:*
  • cpe:2.3:a:banu:tinyproxy:1.5.1:-:*:*:*:*:*:*
    cpe:2.3:a:banu:tinyproxy:1.5.1:-:*:*:*:*:*:*
  • cpe:2.3:a:banu:tinyproxy:1.5.1:rc1:*:*:*:*:*:*
    cpe:2.3:a:banu:tinyproxy:1.5.1:rc1:*:*:*:*:*:*
  • cpe:2.3:a:banu:tinyproxy:1.5.1:rc2:*:*:*:*:*:*
    cpe:2.3:a:banu:tinyproxy:1.5.1:rc2:*:*:*:*:*:*
  • cpe:2.3:a:banu:tinyproxy:1.5.1:rc3:*:*:*:*:*:*
    cpe:2.3:a:banu:tinyproxy:1.5.1:rc3:*:*:*:*:*:*
  • cpe:2.3:a:banu:tinyproxy:1.5.1:rc4:*:*:*:*:*:*
    cpe:2.3:a:banu:tinyproxy:1.5.1:rc4:*:*:*:*:*:*
  • cpe:2.3:a:banu:tinyproxy:1.5.1:pre1:*:*:*:*:*:*
    cpe:2.3:a:banu:tinyproxy:1.5.1:pre1:*:*:*:*:*:*
  • cpe:2.3:a:banu:tinyproxy:1.5.1:pre2:*:*:*:*:*:*
    cpe:2.3:a:banu:tinyproxy:1.5.1:pre2:*:*:*:*:*:*
  • cpe:2.3:a:banu:tinyproxy:1.5.1:pre3:*:*:*:*:*:*
    cpe:2.3:a:banu:tinyproxy:1.5.1:pre3:*:*:*:*:*:*
  • cpe:2.3:a:banu:tinyproxy:1.5.1:pre4:*:*:*:*:*:*
    cpe:2.3:a:banu:tinyproxy:1.5.1:pre4:*:*:*:*:*:*
  • cpe:2.3:a:banu:tinyproxy:1.5.1:pre5:*:*:*:*:*:*
    cpe:2.3:a:banu:tinyproxy:1.5.1:pre5:*:*:*:*:*:*
  • cpe:2.3:a:banu:tinyproxy:1.5.1:pre6:*:*:*:*:*:*
    cpe:2.3:a:banu:tinyproxy:1.5.1:pre6:*:*:*:*:*:*
  • cpe:2.3:a:banu:tinyproxy:1.5.2:-:*:*:*:*:*:*
    cpe:2.3:a:banu:tinyproxy:1.5.2:-:*:*:*:*:*:*
  • cpe:2.3:a:banu:tinyproxy:1.5.2:rc1:*:*:*:*:*:*
    cpe:2.3:a:banu:tinyproxy:1.5.2:rc1:*:*:*:*:*:*
  • cpe:2.3:a:banu:tinyproxy:1.5.2:rc2:*:*:*:*:*:*
    cpe:2.3:a:banu:tinyproxy:1.5.2:rc2:*:*:*:*:*:*
  • cpe:2.3:a:banu:tinyproxy:1.5.3:-:*:*:*:*:*:*
    cpe:2.3:a:banu:tinyproxy:1.5.3:-:*:*:*:*:*:*
  • cpe:2.3:a:banu:tinyproxy:1.5.3:rc1:*:*:*:*:*:*
    cpe:2.3:a:banu:tinyproxy:1.5.3:rc1:*:*:*:*:*:*
  • cpe:2.3:a:banu:tinyproxy:1.6.0:-:*:*:*:*:*:*
    cpe:2.3:a:banu:tinyproxy:1.6.0:-:*:*:*:*:*:*
  • cpe:2.3:a:banu:tinyproxy:1.6.0:a:*:*:*:*:*:*
    cpe:2.3:a:banu:tinyproxy:1.6.0:a:*:*:*:*:*:*
  • cpe:2.3:a:banu:tinyproxy:1.6.0:rc1:*:*:*:*:*:*
    cpe:2.3:a:banu:tinyproxy:1.6.0:rc1:*:*:*:*:*:*
  • cpe:2.3:a:banu:tinyproxy:1.6.0:rc2:*:*:*:*:*:*
    cpe:2.3:a:banu:tinyproxy:1.6.0:rc2:*:*:*:*:*:*
  • cpe:2.3:a:banu:tinyproxy:1.6.0:rc3:*:*:*:*:*:*
    cpe:2.3:a:banu:tinyproxy:1.6.0:rc3:*:*:*:*:*:*
  • cpe:2.3:a:banu:tinyproxy:1.6.0:pre1:*:*:*:*:*:*
    cpe:2.3:a:banu:tinyproxy:1.6.0:pre1:*:*:*:*:*:*
  • cpe:2.3:a:banu:tinyproxy:1.6.0:pre2:*:*:*:*:*:*
    cpe:2.3:a:banu:tinyproxy:1.6.0:pre2:*:*:*:*:*:*
  • cpe:2.3:a:banu:tinyproxy:1.6.0:pre3:*:*:*:*:*:*
    cpe:2.3:a:banu:tinyproxy:1.6.0:pre3:*:*:*:*:*:*
  • cpe:2.3:a:banu:tinyproxy:1.6.0:pre4:*:*:*:*:*:*
    cpe:2.3:a:banu:tinyproxy:1.6.0:pre4:*:*:*:*:*:*
  • cpe:2.3:a:banu:tinyproxy:1.6.1:*:*:*:*:*:*:*
    cpe:2.3:a:banu:tinyproxy:1.6.1:*:*:*:*:*:*:*
  • cpe:2.3:a:banu:tinyproxy:1.6.2:*:*:*:*:*:*:*
    cpe:2.3:a:banu:tinyproxy:1.6.2:*:*:*:*:*:*:*
  • cpe:2.3:a:banu:tinyproxy:1.6.3:*:*:*:*:*:*:*
    cpe:2.3:a:banu:tinyproxy:1.6.3:*:*:*:*:*:*:*
  • cpe:2.3:a:banu:tinyproxy:1.6.4:*:*:*:*:*:*:*
    cpe:2.3:a:banu:tinyproxy:1.6.4:*:*:*:*:*:*:*
  • cpe:2.3:a:banu:tinyproxy:1.6.5:*:*:*:*:*:*:*
    cpe:2.3:a:banu:tinyproxy:1.6.5:*:*:*:*:*:*:*
  • cpe:2.3:a:banu:tinyproxy:1.7.0:*:*:*:*:*:*:*
    cpe:2.3:a:banu:tinyproxy:1.7.0:*:*:*:*:*:*:*
  • cpe:2.3:a:banu:tinyproxy:1.7.1:*:*:*:*:*:*:*
    cpe:2.3:a:banu:tinyproxy:1.7.1:*:*:*:*:*:*:*
  • cpe:2.3:a:banu:tinyproxy:1.8.0:*:*:*:*:*:*:*
    cpe:2.3:a:banu:tinyproxy:1.8.0:*:*:*:*:*:*:*
  • cpe:2.3:a:banu:tinyproxy:1.8.1:*:*:*:*:*:*:*
    cpe:2.3:a:banu:tinyproxy:1.8.1:*:*:*:*:*:*:*
  • cpe:2.3:a:banu:tinyproxy:1.8.2:*:*:*:*:*:*:*
    cpe:2.3:a:banu:tinyproxy:1.8.2:*:*:*:*:*:*:*
  • cpe:2.3:a:banu:tinyproxy:1.5.0:*:*:*:*:*:*:*
    cpe:2.3:a:banu:tinyproxy:1.5.0:*:*:*:*:*:*:*
  • cpe:2.3:a:banu:tinyproxy:1.5.0:rc9:*:*:*:*:*:*
    cpe:2.3:a:banu:tinyproxy:1.5.0:rc9:*:*:*:*:*:*
  • cpe:2.3:a:banu:tinyproxy:1.5.1:*:*:*:*:*:*:*
    cpe:2.3:a:banu:tinyproxy:1.5.1:*:*:*:*:*:*:*
  • cpe:2.3:a:banu:tinyproxy:1.5.2:*:*:*:*:*:*:*
    cpe:2.3:a:banu:tinyproxy:1.5.2:*:*:*:*:*:*:*
  • cpe:2.3:a:banu:tinyproxy:1.5.3:*:*:*:*:*:*:*
    cpe:2.3:a:banu:tinyproxy:1.5.3:*:*:*:*:*:*:*
  • cpe:2.3:a:banu:tinyproxy:1.6.0:*:*:*:*:*:*:*
    cpe:2.3:a:banu:tinyproxy:1.6.0:*:*:*:*:*:*:*
  • cpe:2.3:o:debian:debian_linux:6.0:*:*:*:*:*:*:*
    cpe:2.3:o:debian:debian_linux:6.0:*:*:*:*:*:*:*

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