CVE-2020-5363 Vulnerability Analysis & Exploit Details

CVE-2020-5363
Vulnerability Scoring

6.7
/10
High Risk

If left unpatched, CVE-2020-5363 could lead to major system disruptions or data loss.

Attack Complexity Details

  • Attack Complexity: Low
    Exploits can be performed without significant complexity or special conditions.
  • Attack Vector: Local
    Vulnerability requires local system access.
  • Privileges Required: High
    High-level privileges are required for exploitation.
  • Scope: Unchanged
    Exploit remains within the originally vulnerable component.
  • User Interaction: None
    No user interaction is necessary for exploitation.

CVE-2020-5363 Details

Status: Analyzed

Last updated: 🕓 23 Jun 2020, 16:16 UTC
Originally published on: 🕘 10 Jun 2020, 21:15 UTC

Time between publication and last update: 12 days

CVSS Release: version 3

CVSS3 Source

nvd@nist.gov

CVSS3 Type

Primary

CVSS3 Vector

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

CVE-2020-5363 Vulnerability Summary

CVE-2020-5363: Select Dell Client Consumer and Commercial platforms include an issue that allows the BIOS Admin password to be changed through Dell's manageability interface without knowledge of the current BIOS Admin password. This could potentially allow an unauthorized actor, with physical access and/or OS administrator privileges to the device, to gain privileged access to the platform and the hard drive.

Assessing the Risk of CVE-2020-5363

Access Complexity Graph

The exploitability of CVE-2020-5363 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-2020-5363

The exploitability of CVE-2020-5363 is influenced by multiple factors. Security teams should analyze system configurations and apply appropriate countermeasures to mitigate threats.

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-2020-5363, 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-2020-5363, showing how Confidentiality, Integrity, and Availability might be affected if the vulnerability is exploited. Higher values usually signal greater potential damage.

  • Confidentiality: High
    Exploiting CVE-2020-5363 can result in unauthorized access to sensitive data, severely compromising data privacy.
  • Integrity: High
    CVE-2020-5363 could allow unauthorized modifications to data, potentially affecting system reliability and trust.
  • Availability: High
    CVE-2020-5363 can disrupt system operations, potentially causing complete denial of service (DoS).

Exploit Prediction Scoring System (EPSS)

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

EPSS Score: 0.044% (probability of exploit)

EPSS Percentile: 15.33% (lower percentile = lower relative risk)
This vulnerability is less risky than approximately 84.67% of others.

CVE-2020-5363 References

External References

CWE Common Weakness Enumeration

CWE-158

CAPEC Common Attack Pattern Enumeration and Classification

  • Embedding NULL Bytes CAPEC-52 An adversary embeds one or more null bytes in input to the target software. This attack relies on the usage of a null-valued byte as a string terminator in many environments. The goal is for certain components of the target software to stop processing the input when it encounters the null byte(s).
  • Postfix, Null Terminate, and Backslash CAPEC-53 If a string is passed through a filter of some kind, then a terminal NULL may not be valid. Using alternate representation of NULL allows an adversary to embed the NULL mid-string while postfixing the proper data so that the filter is avoided. One example is a filter that looks for a trailing slash character. If a string insertion is possible, but the slash must exist, an alternate encoding of NULL in mid-string may be used.

Vulnerable Configurations

  • cpe:2.3:o:dell:latitude_5300_firmware:-:*:*:*:*:*:*:*
    cpe:2.3:o:dell:latitude_5300_firmware:-:*:*:*:*:*:*:*
  • cpe:2.3:o:dell:latitude_5300_firmware:1.3.1:*:*:*:*:*:*:*
    cpe:2.3:o:dell:latitude_5300_firmware:1.3.1:*:*:*:*:*:*:*
  • cpe:2.3:o:dell:latitude_5300_firmware:1.7.2:*:*:*:*:*:*:*
    cpe:2.3:o:dell:latitude_5300_firmware:1.7.2:*:*:*:*:*:*:*
  • cpe:2.3:h:dell:latitude_5300:-:*:*:*:*:*:*:*
    cpe:2.3:h:dell:latitude_5300:-:*:*:*:*:*:*:*
  • cpe:2.3:o:dell:latitude_5300_2-in-1_firmware:-:*:*:*:*:*:*:*
    cpe:2.3:o:dell:latitude_5300_2-in-1_firmware:-:*:*:*:*:*:*:*
  • cpe:2.3:h:dell:latitude_5300_2-in-1:-:*:*:*:*:*:*:*
    cpe:2.3:h:dell:latitude_5300_2-in-1:-:*:*:*:*:*:*:*
  • cpe:2.3:o:dell:latitude_5400_firmware:-:*:*:*:*:*:*:*
    cpe:2.3:o:dell:latitude_5400_firmware:-:*:*:*:*:*:*:*
  • cpe:2.3:o:dell:latitude_5400_firmware:1.3.11:*:*:*:*:*:*:*
    cpe:2.3:o:dell:latitude_5400_firmware:1.3.11:*:*:*:*:*:*:*
  • cpe:2.3:o:dell:latitude_5400_firmware:1.6.3:*:*:*:*:*:*:*
    cpe:2.3:o:dell:latitude_5400_firmware:1.6.3:*:*:*:*:*:*:*
  • cpe:2.3:h:dell:latitude_5400:-:*:*:*:*:*:*:*
    cpe:2.3:h:dell:latitude_5400:-:*:*:*:*:*:*:*
  • cpe:2.3:o:dell:latitude_5401_firmware:-:*:*:*:*:*:*:*
    cpe:2.3:o:dell:latitude_5401_firmware:-:*:*:*:*:*:*:*
  • cpe:2.3:o:dell:latitude_5401_firmware:1.3.11:*:*:*:*:*:*:*
    cpe:2.3:o:dell:latitude_5401_firmware:1.3.11:*:*:*:*:*:*:*
  • cpe:2.3:o:dell:latitude_5401_firmware:1.6.1:*:*:*:*:*:*:*
    cpe:2.3:o:dell:latitude_5401_firmware:1.6.1:*:*:*:*:*:*:*
  • cpe:2.3:h:dell:latitude_5401:-:*:*:*:*:*:*:*
    cpe:2.3:h:dell:latitude_5401:-:*:*:*:*:*:*:*
  • cpe:2.3:o:dell:latitude_5500_firmware:-:*:*:*:*:*:*:*
    cpe:2.3:o:dell:latitude_5500_firmware:-:*:*:*:*:*:*:*
  • cpe:2.3:o:dell:latitude_5500_firmware:1.3.11:*:*:*:*:*:*:*
    cpe:2.3:o:dell:latitude_5500_firmware:1.3.11:*:*:*:*:*:*:*
  • cpe:2.3:o:dell:latitude_5500_firmware:1.6.3:*:*:*:*:*:*:*
    cpe:2.3:o:dell:latitude_5500_firmware:1.6.3:*:*:*:*:*:*:*
  • cpe:2.3:h:dell:latitude_5500:-:*:*:*:*:*:*:*
    cpe:2.3:h:dell:latitude_5500:-:*:*:*:*:*:*:*
  • cpe:2.3:o:dell:latitude_5501_firmware:-:*:*:*:*:*:*:*
    cpe:2.3:o:dell:latitude_5501_firmware:-:*:*:*:*:*:*:*
  • cpe:2.3:o:dell:latitude_5501_firmware:1.2.11:*:*:*:*:*:*:*
    cpe:2.3:o:dell:latitude_5501_firmware:1.2.11:*:*:*:*:*:*:*
  • cpe:2.3:o:dell:latitude_5501_firmware:1.6.1:*:*:*:*:*:*:*
    cpe:2.3:o:dell:latitude_5501_firmware:1.6.1:*:*:*:*:*:*:*
  • cpe:2.3:h:dell:latitude_5501:-:*:*:*:*:*:*:*
    cpe:2.3:h:dell:latitude_5501:-:*:*:*:*:*:*:*
  • cpe:2.3:h:dell:latitude_7200_2_in_1:-:*:*:*:*:*:*:*
    cpe:2.3:h:dell:latitude_7200_2_in_1:-:*:*:*:*:*:*:*
  • cpe:2.3:o:dell:latitude_7220_firmware:1.3.1:*:*:*:*:*:*:*
    cpe:2.3:o:dell:latitude_7220_firmware:1.3.1:*:*:*:*:*:*:*
  • cpe:2.3:h:dell:latitude_7220:-:*:*:*:*:*:*:*
    cpe:2.3:h:dell:latitude_7220:-:*:*:*:*:*:*:*
  • cpe:2.3:h:dell:latitude_7220ex_rugged_extreme_tablet:-:*:*:*:*:*:*:*
    cpe:2.3:h:dell:latitude_7220ex_rugged_extreme_tablet:-:*:*:*:*:*:*:*
  • cpe:2.3:o:dell:latitude_7300_firmware:-:*:*:*:*:*:*:*
    cpe:2.3:o:dell:latitude_7300_firmware:-:*:*:*:*:*:*:*
  • cpe:2.3:o:dell:latitude_7300_firmware:1.3.11:*:*:*:*:*:*:*
    cpe:2.3:o:dell:latitude_7300_firmware:1.3.11:*:*:*:*:*:*:*
  • cpe:2.3:o:dell:latitude_7300_firmware:1.6.1:*:*:*:*:*:*:*
    cpe:2.3:o:dell:latitude_7300_firmware:1.6.1:*:*:*:*:*:*:*
  • cpe:2.3:h:dell:latitude_7300:-:*:*:*:*:*:*:*
    cpe:2.3:h:dell:latitude_7300:-:*:*:*:*:*:*:*
  • cpe:2.3:o:dell:latitude_7400_firmware:-:*:*:*:*:*:*:*
    cpe:2.3:o:dell:latitude_7400_firmware:-:*:*:*:*:*:*:*
  • cpe:2.3:o:dell:latitude_7400_firmware:1.3.11:*:*:*:*:*:*:*
    cpe:2.3:o:dell:latitude_7400_firmware:1.3.11:*:*:*:*:*:*:*
  • cpe:2.3:o:dell:latitude_7400_firmware:1.6.1:*:*:*:*:*:*:*
    cpe:2.3:o:dell:latitude_7400_firmware:1.6.1:*:*:*:*:*:*:*
  • cpe:2.3:h:dell:latitude_7400:-:*:*:*:*:*:*:*
    cpe:2.3:h:dell:latitude_7400:-:*:*:*:*:*:*:*
  • cpe:2.3:o:dell:precision_3540_firmware:-:*:*:*:*:*:*:*
    cpe:2.3:o:dell:precision_3540_firmware:-:*:*:*:*:*:*:*
  • cpe:2.3:o:dell:precision_3540_firmware:1.3.11:*:*:*:*:*:*:*
    cpe:2.3:o:dell:precision_3540_firmware:1.3.11:*:*:*:*:*:*:*
  • cpe:2.3:o:dell:precision_3540_firmware:1.6.3:*:*:*:*:*:*:*
    cpe:2.3:o:dell:precision_3540_firmware:1.6.3:*:*:*:*:*:*:*
  • cpe:2.3:h:dell:precision_3540:-:*:*:*:*:*:*:*
    cpe:2.3:h:dell:precision_3540:-:*:*:*:*:*:*:*
  • cpe:2.3:o:dell:precision_3541_firmware:-:*:*:*:*:*:*:*
    cpe:2.3:o:dell:precision_3541_firmware:-:*:*:*:*:*:*:*
  • cpe:2.3:o:dell:precision_3541_firmware:1.2.11:*:*:*:*:*:*:*
    cpe:2.3:o:dell:precision_3541_firmware:1.2.11:*:*:*:*:*:*:*
  • cpe:2.3:o:dell:precision_3541_firmware:1.6.1:*:*:*:*:*:*:*
    cpe:2.3:o:dell:precision_3541_firmware:1.6.1:*:*:*:*:*:*:*
  • cpe:2.3:h:dell:precision_3541:-:*:*:*:*:*:*:*
    cpe:2.3:h:dell:precision_3541:-:*:*:*:*:*:*:*
  • cpe:2.3:o:dell:precision_7540_firmware:-:*:*:*:*:*:*:*
    cpe:2.3:o:dell:precision_7540_firmware:-:*:*:*:*:*:*:*
  • cpe:2.3:o:dell:precision_7540_firmware:1.1.3:*:*:*:*:*:*:*
    cpe:2.3:o:dell:precision_7540_firmware:1.1.3:*:*:*:*:*:*:*
  • cpe:2.3:o:dell:precision_7540_firmware:1.5.1:*:*:*:*:*:*:*
    cpe:2.3:o:dell:precision_7540_firmware:1.5.1:*:*:*:*:*:*:*
  • cpe:2.3:h:dell:precision_7540:-:*:*:*:*:*:*:*
    cpe:2.3:h:dell:precision_7540:-:*:*:*:*:*:*:*
  • cpe:2.3:o:dell:precision_7740_firmware:-:*:*:*:*:*:*:*
    cpe:2.3:o:dell:precision_7740_firmware:-:*:*:*:*:*:*:*
  • cpe:2.3:o:dell:precision_7740_firmware:1.1.3:*:*:*:*:*:*:*
    cpe:2.3:o:dell:precision_7740_firmware:1.1.3:*:*:*:*:*:*:*
  • cpe:2.3:o:dell:precision_7740_firmware:1.5.1:*:*:*:*:*:*:*
    cpe:2.3:o:dell:precision_7740_firmware:1.5.1:*:*:*:*:*:*:*
  • cpe:2.3:h:dell:precision_7740:-:*:*:*:*:*:*:*
    cpe:2.3:h:dell:precision_7740:-:*:*:*:*:*:*:*
  • cpe:2.3:o:dell:xps_13_9300_firmware:-:*:*:*:*:*:*:*
    cpe:2.3:o:dell:xps_13_9300_firmware:-:*:*:*:*:*:*:*
  • cpe:2.3:h:dell:xps_13_9300:-:*:*:*:*:*:*:*
    cpe:2.3:h:dell:xps_13_9300:-:*:*:*:*:*:*:*
  • cpe:2.3:h:dell:xps_7390_2-in-1:-:*:*:*:*:*:*:*
    cpe:2.3:h:dell:xps_7390_2-in-1:-:*:*:*:*:*:*:*
  • cpe:2.3:h:dell:xps_7590:-:*:*:*:*:*:*:*
    cpe:2.3:h:dell:xps_7590:-:*:*:*:*:*:*:*

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