CVE-2017-3803 Vulnerability Analysis & Exploit Details

CVE-2017-3803
Vulnerability Scoring

4.7
/10
Medium Risk

The vulnerability CVE-2017-3803 could compromise system integrity but typically requires user interaction to be exploited.

Attack Complexity Details

  • Attack Complexity: Low
    Exploits can be performed without significant complexity or special conditions.
  • Attack Vector: Adjacent_network
    Attack Vector Under Analysis
  • Privileges Required: None
    No privileges are required for exploitation.
  • Scope: Changed
    Successful exploitation can impact components beyond the vulnerable component.
  • User Interaction: None
    No user interaction is necessary for exploitation.

CVE-2017-3803 Details

Status: Modified

Last updated: 🕒 21 Nov 2024, 03:26 UTC
Originally published on: 🕢 26 Jan 2017, 07:59 UTC

Time between publication and last update: 2855 days

CVSS Release: version 3

CVSS3 Source

nvd@nist.gov

CVSS3 Type

Primary

CVSS3 Vector

CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L

CVE-2017-3803 Vulnerability Summary

CVE-2017-3803: A vulnerability in the Cisco IOS Software forwarding queue of Cisco 2960X and 3750X switches could allow an unauthenticated, adjacent attacker to cause a memory leak in the software forwarding queue that would eventually lead to a partial denial of service (DoS) condition. More Information: CSCva72252. Known Affected Releases: 15.2(2)E3 15.2(4)E1. Known Fixed Releases: 15.2(2)E6 15.2(4)E3 15.2(5)E1 15.2(5.3.28i)E1 15.2(6.0.49i)E 3.9(1)E.

Assessing the Risk of CVE-2017-3803

Access Complexity Graph

The exploitability of CVE-2017-3803 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-2017-3803

With low attack complexity and no required privileges, CVE-2017-3803 is an easy target for cybercriminals. Organizations should prioritize immediate mitigation measures to prevent unauthorized access and data breaches.

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-2017-3803, 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-2017-3803, showing how Confidentiality, Integrity, and Availability might be affected if the vulnerability is exploited. Higher values usually signal greater potential damage.

  • Confidentiality: None
    CVE-2017-3803 has no significant impact on data confidentiality.
  • Integrity: None
    CVE-2017-3803 poses no threat to data integrity.
  • Availability: Low
    CVE-2017-3803 may slightly degrade system performance without fully affecting service availability.

Exploit Prediction Scoring System (EPSS)

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

EPSS Score: 0.112% (probability of exploit)

EPSS Percentile: 46.3% (lower percentile = lower relative risk)
This vulnerability is less risky than approximately 53.7% of others.

CVE-2017-3803 References

External References

CWE Common Weakness Enumeration

CWE-772

CAPEC Common Attack Pattern Enumeration and Classification

  • HTTP DoS CAPEC-469 An attacker performs flooding at the HTTP level to bring down only a particular web application rather than anything listening on a TCP/IP connection. This denial of service attack requires substantially fewer packets to be sent which makes DoS harder to detect. This is an equivalent of SYN flood in HTTP. The idea is to keep the HTTP session alive indefinitely and then repeat that hundreds of times. This attack targets resource depletion weaknesses in web server software. The web server will wait to attacker's responses on the initiated HTTP sessions while the connection threads are being exhausted.

Vulnerable Configurations

  • cpe:2.3:o:cisco:ios:15.2\(2\)e3:*:*:*:*:*:*:*
    cpe:2.3:o:cisco:ios:15.2\(2\)e3:*:*:*:*:*:*:*
  • cpe:2.3:o:cisco:ios:15.2\(4\)e1:*:*:*:*:*:*:*
    cpe:2.3:o:cisco:ios:15.2\(4\)e1:*:*:*:*:*:*:*

Protect Your Infrastructure against CVE-2017-3803: Combat Critical CVE Threats

Stay updated with real-time CVE vulnerabilities and take action to secure your systems. Enhance your cybersecurity posture with the latest threat intelligence and mitigation techniques. Develop the skills necessary to defend against CVEs and secure critical infrastructures. Join the top cybersecurity professionals safeguarding today's infrastructures.

Other 5 Recently Published CVEs Vulnerabilities

  • CVE-2025-2129 – A vulnerability was found in Mage AI 0.9.75. It has been classified as problematic. This affects an unknown part. The manipulation leads to insecur...
  • CVE-2025-2127 – A vulnerability was found in JoomlaUX JUX Real Estate 3.4.0 on Joomla. It has been classified as problematic. Affected is an unknown function of th...
  • CVE-2025-2126 – A vulnerability was found in JoomlaUX JUX Real Estate 3.4.0 on Joomla and classified as critical. This issue affects some unknown processing of the...
  • CVE-2025-2125 – A vulnerability has been found in Control iD RH iD 25.2.25.0 and classified as problematic. This vulnerability affects unknown code of the file /v2...
  • CVE-2025-2124 – A vulnerability, which was classified as problematic, was found in Control iD RH iD 25.2.25.0. This affects an unknown part of the file /v2/custome...