CVE-2020-5217 Vulnerability Analysis & Exploit Details

CVE-2020-5217
Vulnerability Scoring

5.8
/10
Significant Risk

Security assessments indicate that CVE-2020-5217 presents a notable risk, potentially requiring prompt mitigation.

Attack Complexity Details

  • Attack Complexity: Low
    Exploits can be performed without significant complexity or special conditions.
  • Attack Vector: Network
    Vulnerability is exploitable over a network without physical access.
  • 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-2020-5217 Details

Status: Analyzed

Last updated: 🕜 21 May 2020, 13:51 UTC
Originally published on: 🕒 23 Jan 2020, 03:15 UTC

Time between publication and last update: 119 days

CVSS Release: version 3

CVSS3 Source

nvd@nist.gov

CVSS3 Type

Primary

CVSS3 Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N

CVE-2020-5217 Vulnerability Summary

CVE-2020-5217: In Secure Headers (RubyGem secure_headers), a directive injection vulnerability is present in versions before 3.8.0, 5.1.0, and 6.2.0. If user-supplied input was passed into append/override_content_security_policy_directives, a semicolon could be injected leading to directive injection. This could be used to e.g. override a script-src directive. Duplicate directives are ignored and the first one wins. The directives in secure_headers are sorted alphabetically so they pretty much all come before script-src. A previously undefined directive would receive a value even if SecureHeaders::OPT_OUT was supplied. The fixed versions will silently convert the semicolons to spaces and emit a deprecation warning when this happens. This will result in innocuous browser console messages if being exploited/accidentally used. In future releases, we will raise application errors resulting in 500s. Depending on what major version you are using, the fixed versions are 6.2.0, 5.1.0, 3.8.0.

Assessing the Risk of CVE-2020-5217

Access Complexity Graph

The exploitability of CVE-2020-5217 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-2020-5217

With low attack complexity and no required privileges, CVE-2020-5217 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-2020-5217, 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-2020-5217, showing how Confidentiality, Integrity, and Availability might be affected if the vulnerability is exploited. Higher values usually signal greater potential damage.

  • Confidentiality: None
    CVE-2020-5217 has no significant impact on data confidentiality.
  • Integrity: Low
    Exploiting CVE-2020-5217 may cause minor changes to data without severely impacting its accuracy.
  • Availability: None
    CVE-2020-5217 does not impact 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: 0.203% (probability of exploit)

EPSS Percentile: 58.73% (lower percentile = lower relative risk)
This vulnerability is less risky than approximately 41.27% of others.

CVE-2020-5217 References

External References

CWE Common Weakness Enumeration

CWE-95

CAPEC Common Attack Pattern Enumeration and Classification

  • Leverage Executable Code in Non-Executable Files CAPEC-35 An attack of this type exploits a system's trust in configuration and resource files. When the executable loads the resource (such as an image file or configuration file) the attacker has modified the file to either execute malicious code directly or manipulate the target process (e.g. application server) to execute based on the malicious configuration parameters. Since systems are increasingly interrelated mashing up resources from local and remote sources the possibility of this attack occurring is high.

Vulnerable Configurations

  • cpe:2.3:a:twitter:secure_headers:0.1.0:*:*:*:*:ruby:*:*
    cpe:2.3:a:twitter:secure_headers:0.1.0:*:*:*:*:ruby:*:*
  • cpe:2.3:a:twitter:secure_headers:0.1.1:*:*:*:*:ruby:*:*
    cpe:2.3:a:twitter:secure_headers:0.1.1:*:*:*:*:ruby:*:*
  • cpe:2.3:a:twitter:secure_headers:0.2.0:*:*:*:*:ruby:*:*
    cpe:2.3:a:twitter:secure_headers:0.2.0:*:*:*:*:ruby:*:*
  • cpe:2.3:a:twitter:secure_headers:0.2.1:*:*:*:*:ruby:*:*
    cpe:2.3:a:twitter:secure_headers:0.2.1:*:*:*:*:ruby:*:*
  • cpe:2.3:a:twitter:secure_headers:0.3.0:*:*:*:*:ruby:*:*
    cpe:2.3:a:twitter:secure_headers:0.3.0:*:*:*:*:ruby:*:*
  • cpe:2.3:a:twitter:secure_headers:0.4.0:*:*:*:*:ruby:*:*
    cpe:2.3:a:twitter:secure_headers:0.4.0:*:*:*:*:ruby:*:*
  • cpe:2.3:a:twitter:secure_headers:0.4.1:*:*:*:*:ruby:*:*
    cpe:2.3:a:twitter:secure_headers:0.4.1:*:*:*:*:ruby:*:*
  • cpe:2.3:a:twitter:secure_headers:0.4.2:*:*:*:*:ruby:*:*
    cpe:2.3:a:twitter:secure_headers:0.4.2:*:*:*:*:ruby:*:*
  • cpe:2.3:a:twitter:secure_headers:0.4.3:*:*:*:*:ruby:*:*
    cpe:2.3:a:twitter:secure_headers:0.4.3:*:*:*:*:ruby:*:*
  • cpe:2.3:a:twitter:secure_headers:0.5.0:*:*:*:*:ruby:*:*
    cpe:2.3:a:twitter:secure_headers:0.5.0:*:*:*:*:ruby:*:*
  • cpe:2.3:a:twitter:secure_headers:1.0.0:*:*:*:*:ruby:*:*
    cpe:2.3:a:twitter:secure_headers:1.0.0:*:*:*:*:ruby:*:*
  • cpe:2.3:a:twitter:secure_headers:1.1.0:*:*:*:*:ruby:*:*
    cpe:2.3:a:twitter:secure_headers:1.1.0:*:*:*:*:ruby:*:*
  • cpe:2.3:a:twitter:secure_headers:1.1.1:*:*:*:*:ruby:*:*
    cpe:2.3:a:twitter:secure_headers:1.1.1:*:*:*:*:ruby:*:*
  • cpe:2.3:a:twitter:secure_headers:1.2.0:*:*:*:*:ruby:*:*
    cpe:2.3:a:twitter:secure_headers:1.2.0:*:*:*:*:ruby:*:*
  • cpe:2.3:a:twitter:secure_headers:1.3.0:*:*:*:*:ruby:*:*
    cpe:2.3:a:twitter:secure_headers:1.3.0:*:*:*:*:ruby:*:*
  • cpe:2.3:a:twitter:secure_headers:1.3.1:*:*:*:*:ruby:*:*
    cpe:2.3:a:twitter:secure_headers:1.3.1:*:*:*:*:ruby:*:*
  • cpe:2.3:a:twitter:secure_headers:1.3.2:*:*:*:*:ruby:*:*
    cpe:2.3:a:twitter:secure_headers:1.3.2:*:*:*:*:ruby:*:*
  • cpe:2.3:a:twitter:secure_headers:1.3.3:*:*:*:*:ruby:*:*
    cpe:2.3:a:twitter:secure_headers:1.3.3:*:*:*:*:ruby:*:*
  • cpe:2.3:a:twitter:secure_headers:1.3.4:*:*:*:*:ruby:*:*
    cpe:2.3:a:twitter:secure_headers:1.3.4:*:*:*:*:ruby:*:*
  • cpe:2.3:a:twitter:secure_headers:1.4.0:*:*:*:*:ruby:*:*
    cpe:2.3:a:twitter:secure_headers:1.4.0:*:*:*:*:ruby:*:*
  • cpe:2.3:a:twitter:secure_headers:1.4.1:*:*:*:*:ruby:*:*
    cpe:2.3:a:twitter:secure_headers:1.4.1:*:*:*:*:ruby:*:*
  • cpe:2.3:a:twitter:secure_headers:2.0.0:-:*:*:*:ruby:*:*
    cpe:2.3:a:twitter:secure_headers:2.0.0:-:*:*:*:ruby:*:*
  • cpe:2.3:a:twitter:secure_headers:2.0.0:prerelease:*:*:*:ruby:*:*
    cpe:2.3:a:twitter:secure_headers:2.0.0:prerelease:*:*:*:ruby:*:*
  • cpe:2.3:a:twitter:secure_headers:2.0.0:prerelease2:*:*:*:ruby:*:*
    cpe:2.3:a:twitter:secure_headers:2.0.0:prerelease2:*:*:*:ruby:*:*
  • cpe:2.3:a:twitter:secure_headers:2.0.1:*:*:*:*:ruby:*:*
    cpe:2.3:a:twitter:secure_headers:2.0.1:*:*:*:*:ruby:*:*
  • cpe:2.3:a:twitter:secure_headers:2.0.2:*:*:*:*:ruby:*:*
    cpe:2.3:a:twitter:secure_headers:2.0.2:*:*:*:*:ruby:*:*
  • cpe:2.3:a:twitter:secure_headers:2.1.0:*:*:*:*:ruby:*:*
    cpe:2.3:a:twitter:secure_headers:2.1.0:*:*:*:*:ruby:*:*
  • cpe:2.3:a:twitter:secure_headers:2.2.0:*:*:*:*:ruby:*:*
    cpe:2.3:a:twitter:secure_headers:2.2.0:*:*:*:*:ruby:*:*
  • cpe:2.3:a:twitter:secure_headers:2.2.1:*:*:*:*:ruby:*:*
    cpe:2.3:a:twitter:secure_headers:2.2.1:*:*:*:*:ruby:*:*
  • cpe:2.3:a:twitter:secure_headers:2.2.2:*:*:*:*:ruby:*:*
    cpe:2.3:a:twitter:secure_headers:2.2.2:*:*:*:*:ruby:*:*
  • cpe:2.3:a:twitter:secure_headers:2.2.3:*:*:*:*:ruby:*:*
    cpe:2.3:a:twitter:secure_headers:2.2.3:*:*:*:*:ruby:*:*
  • cpe:2.3:a:twitter:secure_headers:2.2.4:*:*:*:*:ruby:*:*
    cpe:2.3:a:twitter:secure_headers:2.2.4:*:*:*:*:ruby:*:*
  • cpe:2.3:a:twitter:secure_headers:2.3.0:*:*:*:*:ruby:*:*
    cpe:2.3:a:twitter:secure_headers:2.3.0:*:*:*:*:ruby:*:*
  • cpe:2.3:a:twitter:secure_headers:2.4.0:*:*:*:*:ruby:*:*
    cpe:2.3:a:twitter:secure_headers:2.4.0:*:*:*:*:ruby:*:*
  • cpe:2.3:a:twitter:secure_headers:2.4.1:*:*:*:*:ruby:*:*
    cpe:2.3:a:twitter:secure_headers:2.4.1:*:*:*:*:ruby:*:*
  • cpe:2.3:a:twitter:secure_headers:2.4.2:*:*:*:*:ruby:*:*
    cpe:2.3:a:twitter:secure_headers:2.4.2:*:*:*:*:ruby:*:*
  • cpe:2.3:a:twitter:secure_headers:2.4.3:*:*:*:*:ruby:*:*
    cpe:2.3:a:twitter:secure_headers:2.4.3:*:*:*:*:ruby:*:*
  • cpe:2.3:a:twitter:secure_headers:2.4.4:*:*:*:*:ruby:*:*
    cpe:2.3:a:twitter:secure_headers:2.4.4:*:*:*:*:ruby:*:*
  • cpe:2.3:a:twitter:secure_headers:2.5.0:*:*:*:*:ruby:*:*
    cpe:2.3:a:twitter:secure_headers:2.5.0:*:*:*:*:ruby:*:*
  • cpe:2.3:a:twitter:secure_headers:2.5.1:*:*:*:*:ruby:*:*
    cpe:2.3:a:twitter:secure_headers:2.5.1:*:*:*:*:ruby:*:*
  • cpe:2.3:a:twitter:secure_headers:2.5.2:*:*:*:*:ruby:*:*
    cpe:2.3:a:twitter:secure_headers:2.5.2:*:*:*:*:ruby:*:*
  • cpe:2.3:a:twitter:secure_headers:2.5.3:*:*:*:*:ruby:*:*
    cpe:2.3:a:twitter:secure_headers:2.5.3:*:*:*:*:ruby:*:*
  • cpe:2.3:a:twitter:secure_headers:3.0.0:-:*:*:*:ruby:*:*
    cpe:2.3:a:twitter:secure_headers:3.0.0:-:*:*:*:ruby:*:*
  • cpe:2.3:a:twitter:secure_headers:3.0.0:rc1:*:*:*:ruby:*:*
    cpe:2.3:a:twitter:secure_headers:3.0.0:rc1:*:*:*:ruby:*:*
  • cpe:2.3:a:twitter:secure_headers:3.0.0:prerelease:*:*:*:ruby:*:*
    cpe:2.3:a:twitter:secure_headers:3.0.0:prerelease:*:*:*:ruby:*:*
  • cpe:2.3:a:twitter:secure_headers:3.0.0:prerelease1:*:*:*:ruby:*:*
    cpe:2.3:a:twitter:secure_headers:3.0.0:prerelease1:*:*:*:ruby:*:*
  • cpe:2.3:a:twitter:secure_headers:3.0.0:prerelease2:*:*:*:ruby:*:*
    cpe:2.3:a:twitter:secure_headers:3.0.0:prerelease2:*:*:*:ruby:*:*
  • cpe:2.3:a:twitter:secure_headers:3.0.0:prerelease3:*:*:*:ruby:*:*
    cpe:2.3:a:twitter:secure_headers:3.0.0:prerelease3:*:*:*:ruby:*:*
  • cpe:2.3:a:twitter:secure_headers:3.0.1:*:*:*:*:ruby:*:*
    cpe:2.3:a:twitter:secure_headers:3.0.1:*:*:*:*:ruby:*:*
  • cpe:2.3:a:twitter:secure_headers:3.0.2:*:*:*:*:ruby:*:*
    cpe:2.3:a:twitter:secure_headers:3.0.2:*:*:*:*:ruby:*:*
  • cpe:2.3:a:twitter:secure_headers:3.0.3:*:*:*:*:ruby:*:*
    cpe:2.3:a:twitter:secure_headers:3.0.3:*:*:*:*:ruby:*:*
  • cpe:2.3:a:twitter:secure_headers:3.1.0:*:*:*:*:ruby:*:*
    cpe:2.3:a:twitter:secure_headers:3.1.0:*:*:*:*:ruby:*:*
  • cpe:2.3:a:twitter:secure_headers:3.1.1:*:*:*:*:ruby:*:*
    cpe:2.3:a:twitter:secure_headers:3.1.1:*:*:*:*:ruby:*:*
  • cpe:2.3:a:twitter:secure_headers:3.1.2:*:*:*:*:ruby:*:*
    cpe:2.3:a:twitter:secure_headers:3.1.2:*:*:*:*:ruby:*:*
  • cpe:2.3:a:twitter:secure_headers:3.2.0:*:*:*:*:ruby:*:*
    cpe:2.3:a:twitter:secure_headers:3.2.0:*:*:*:*:ruby:*:*
  • cpe:2.3:a:twitter:secure_headers:3.3.0:*:*:*:*:ruby:*:*
    cpe:2.3:a:twitter:secure_headers:3.3.0:*:*:*:*:ruby:*:*
  • cpe:2.3:a:twitter:secure_headers:3.3.1:*:*:*:*:ruby:*:*
    cpe:2.3:a:twitter:secure_headers:3.3.1:*:*:*:*:ruby:*:*
  • cpe:2.3:a:twitter:secure_headers:3.3.2:*:*:*:*:ruby:*:*
    cpe:2.3:a:twitter:secure_headers:3.3.2:*:*:*:*:ruby:*:*
  • cpe:2.3:a:twitter:secure_headers:3.4.0:*:*:*:*:ruby:*:*
    cpe:2.3:a:twitter:secure_headers:3.4.0:*:*:*:*:ruby:*:*
  • cpe:2.3:a:twitter:secure_headers:3.4.1:*:*:*:*:ruby:*:*
    cpe:2.3:a:twitter:secure_headers:3.4.1:*:*:*:*:ruby:*:*
  • cpe:2.3:a:twitter:secure_headers:3.5.0:-:*:*:*:ruby:*:*
    cpe:2.3:a:twitter:secure_headers:3.5.0:-:*:*:*:ruby:*:*
  • cpe:2.3:a:twitter:secure_headers:3.5.0:prerelease:*:*:*:ruby:*:*
    cpe:2.3:a:twitter:secure_headers:3.5.0:prerelease:*:*:*:ruby:*:*
  • cpe:2.3:a:twitter:secure_headers:3.5.1:*:*:*:*:ruby:*:*
    cpe:2.3:a:twitter:secure_headers:3.5.1:*:*:*:*:ruby:*:*
  • cpe:2.3:a:twitter:secure_headers:3.6.0:*:*:*:*:ruby:*:*
    cpe:2.3:a:twitter:secure_headers:3.6.0:*:*:*:*:ruby:*:*
  • cpe:2.3:a:twitter:secure_headers:3.6.1:*:*:*:*:ruby:*:*
    cpe:2.3:a:twitter:secure_headers:3.6.1:*:*:*:*:ruby:*:*
  • cpe:2.3:a:twitter:secure_headers:3.6.2:*:*:*:*:ruby:*:*
    cpe:2.3:a:twitter:secure_headers:3.6.2:*:*:*:*:ruby:*:*
  • cpe:2.3:a:twitter:secure_headers:3.6.3:*:*:*:*:ruby:*:*
    cpe:2.3:a:twitter:secure_headers:3.6.3:*:*:*:*:ruby:*:*
  • cpe:2.3:a:twitter:secure_headers:3.6.4:*:*:*:*:ruby:*:*
    cpe:2.3:a:twitter:secure_headers:3.6.4:*:*:*:*:ruby:*:*
  • cpe:2.3:a:twitter:secure_headers:3.6.5:*:*:*:*:ruby:*:*
    cpe:2.3:a:twitter:secure_headers:3.6.5:*:*:*:*:ruby:*:*
  • cpe:2.3:a:twitter:secure_headers:3.6.6:*:*:*:*:ruby:*:*
    cpe:2.3:a:twitter:secure_headers:3.6.6:*:*:*:*:ruby:*:*
  • cpe:2.3:a:twitter:secure_headers:3.6.7:*:*:*:*:ruby:*:*
    cpe:2.3:a:twitter:secure_headers:3.6.7:*:*:*:*:ruby:*:*
  • cpe:2.3:a:twitter:secure_headers:3.7.0:*:*:*:*:ruby:*:*
    cpe:2.3:a:twitter:secure_headers:3.7.0:*:*:*:*:ruby:*:*
  • cpe:2.3:a:twitter:secure_headers:3.7.1:*:*:*:*:ruby:*:*
    cpe:2.3:a:twitter:secure_headers:3.7.1:*:*:*:*:ruby:*:*
  • cpe:2.3:a:twitter:secure_headers:3.7.2:*:*:*:*:ruby:*:*
    cpe:2.3:a:twitter:secure_headers:3.7.2:*:*:*:*:ruby:*:*
  • cpe:2.3:a:twitter:secure_headers:3.7.3:*:*:*:*:ruby:*:*
    cpe:2.3:a:twitter:secure_headers:3.7.3:*:*:*:*:ruby:*:*
  • cpe:2.3:a:twitter:secure_headers:3.7.4:*:*:*:*:ruby:*:*
    cpe:2.3:a:twitter:secure_headers:3.7.4:*:*:*:*:ruby:*:*
  • cpe:2.3:a:twitter:secure_headers:5.0.0:alpha1:*:*:*:ruby:*:*
    cpe:2.3:a:twitter:secure_headers:5.0.0:alpha1:*:*:*:ruby:*:*
  • cpe:2.3:a:twitter:secure_headers:5.0.1:*:*:*:*:ruby:*:*
    cpe:2.3:a:twitter:secure_headers:5.0.1:*:*:*:*:ruby:*:*
  • cpe:2.3:a:twitter:secure_headers:5.0.2:*:*:*:*:ruby:*:*
    cpe:2.3:a:twitter:secure_headers:5.0.2:*:*:*:*:ruby:*:*
  • cpe:2.3:a:twitter:secure_headers:5.0.3:*:*:*:*:ruby:*:*
    cpe:2.3:a:twitter:secure_headers:5.0.3:*:*:*:*:ruby:*:*
  • cpe:2.3:a:twitter:secure_headers:5.0.4:*:*:*:*:ruby:*:*
    cpe:2.3:a:twitter:secure_headers:5.0.4:*:*:*:*:ruby:*:*
  • cpe:2.3:a:twitter:secure_headers:5.0.5:*:*:*:*:ruby:*:*
    cpe:2.3:a:twitter:secure_headers:5.0.5:*:*:*:*:ruby:*:*
  • cpe:2.3:a:twitter:secure_headers:6.0.0:-:*:*:*:ruby:*:*
    cpe:2.3:a:twitter:secure_headers:6.0.0:-:*:*:*:ruby:*:*
  • cpe:2.3:a:twitter:secure_headers:6.0.0:alpha1:*:*:*:ruby:*:*
    cpe:2.3:a:twitter:secure_headers:6.0.0:alpha1:*:*:*:ruby:*:*
  • cpe:2.3:a:twitter:secure_headers:6.0.0:alpha2:*:*:*:ruby:*:*
    cpe:2.3:a:twitter:secure_headers:6.0.0:alpha2:*:*:*:ruby:*:*
  • cpe:2.3:a:twitter:secure_headers:6.0.0:alpha3:*:*:*:ruby:*:*
    cpe:2.3:a:twitter:secure_headers:6.0.0:alpha3:*:*:*:ruby:*:*
  • cpe:2.3:a:twitter:secure_headers:6.1.0:*:*:*:*:ruby:*:*
    cpe:2.3:a:twitter:secure_headers:6.1.0:*:*:*:*:ruby:*:*
  • cpe:2.3:a:twitter:secure_headers:6.1.1:*:*:*:*:ruby:*:*
    cpe:2.3:a:twitter:secure_headers:6.1.1:*:*:*:*:ruby:*:*
  • cpe:2.3:a:twitter:secure_headers:6.1.2:*:*:*:*:ruby:*:*
    cpe:2.3:a:twitter:secure_headers:6.1.2:*:*:*:*:ruby:*:*

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