CVE-2021-3602 Vulnerability Analysis & Exploit Details

CVE-2021-3602
Vulnerability Scoring

5.5
/10
Significant Risk

Security assessments indicate that CVE-2021-3602 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: Local
    Vulnerability requires local system access.
  • Privileges Required: Low
    Some privileges are necessary to exploit the vulnerability.
  • Scope: Unchanged
    Exploit remains within the originally vulnerable component.
  • User Interaction: None
    No user interaction is necessary for exploitation.

CVE-2021-3602 Details

Status: Modified

Last updated: 🕕 21 Nov 2024, 06:21 UTC
Originally published on: 🕖 03 Mar 2022, 19:15 UTC

Time between publication and last update: 993 days

CVSS Release: version 3

CVSS3 Source

nvd@nist.gov

CVSS3 Type

Primary

CVSS3 Vector

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

CVE-2021-3602 Vulnerability Summary

CVE-2021-3602: An information disclosure flaw was found in Buildah, when building containers using chroot isolation. Running processes in container builds (e.g. Dockerfile RUN commands) can access environment variables from parent and grandparent processes. When run in a container in a CI/CD environment, environment variables may include sensitive information that was shared with the container in order to be used only by Buildah itself (e.g. container registry credentials).

Assessing the Risk of CVE-2021-3602

Access Complexity Graph

The exploitability of CVE-2021-3602 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-2021-3602

CVE-2021-3602 presents an accessible attack vector with minimal effort required. Restricting access controls and implementing security updates are critical to reducing exploitation risks.

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-2021-3602, 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-2021-3602, 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-2021-3602 can result in unauthorized access to sensitive data, severely compromising data privacy.
  • Integrity: None
    CVE-2021-3602 poses no threat to data integrity.
  • Availability: None
    CVE-2021-3602 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: 0.045% (probability of exploit)

EPSS Percentile: 18.35% (lower percentile = lower relative risk)
This vulnerability is less risky than approximately 81.65% of others.

CVE-2021-3602 References

External References

CWE Common Weakness Enumeration

CWE-212

CAPEC Common Attack Pattern Enumeration and Classification

  • Windows ::DATA Alternate Data Stream CAPEC-168 An attacker exploits the functionality of Microsoft NTFS Alternate Data Streams (ADS) to undermine system security. ADS allows multiple "files" to be stored in one directory entry referenced as filename:streamname. One or more alternate data streams may be stored in any file or directory. Normal Microsoft utilities do not show the presence of an ADS stream attached to a file. The additional space for the ADS is not recorded in the displayed file size. The additional space for ADS is accounted for in the used space on the volume. An ADS can be any type of file. ADS are copied by standard Microsoft utilities between NTFS volumes. ADS can be used by an attacker or intruder to hide tools, scripts, and data from detection by normal system utilities. Many anti-virus programs do not check for or scan ADS. Windows Vista does have a switch (-R) on the command line DIR command that will display alternate streams.

Vulnerable Configurations

  • cpe:2.3:a:buildah_project:buildah:-:*:*:*:*:*:*:*
    cpe:2.3:a:buildah_project:buildah:-:*:*:*:*:*:*:*
  • cpe:2.3:a:buildah_project:buildah:0.1:*:*:*:*:*:*:*
    cpe:2.3:a:buildah_project:buildah:0.1:*:*:*:*:*:*:*
  • cpe:2.3:a:buildah_project:buildah:0.2:*:*:*:*:*:*:*
    cpe:2.3:a:buildah_project:buildah:0.2:*:*:*:*:*:*:*
  • cpe:2.3:a:buildah_project:buildah:0.3:*:*:*:*:*:*:*
    cpe:2.3:a:buildah_project:buildah:0.3:*:*:*:*:*:*:*
  • cpe:2.3:a:buildah_project:buildah:0.4:*:*:*:*:*:*:*
    cpe:2.3:a:buildah_project:buildah:0.4:*:*:*:*:*:*:*
  • cpe:2.3:a:buildah_project:buildah:0.5:*:*:*:*:*:*:*
    cpe:2.3:a:buildah_project:buildah:0.5:*:*:*:*:*:*:*
  • cpe:2.3:a:buildah_project:buildah:0.6:*:*:*:*:*:*:*
    cpe:2.3:a:buildah_project:buildah:0.6:*:*:*:*:*:*:*
  • cpe:2.3:a:buildah_project:buildah:0.7:*:*:*:*:*:*:*
    cpe:2.3:a:buildah_project:buildah:0.7:*:*:*:*:*:*:*
  • cpe:2.3:a:buildah_project:buildah:0.8:*:*:*:*:*:*:*
    cpe:2.3:a:buildah_project:buildah:0.8:*:*:*:*:*:*:*
  • cpe:2.3:a:buildah_project:buildah:0.9:*:*:*:*:*:*:*
    cpe:2.3:a:buildah_project:buildah:0.9:*:*:*:*:*:*:*
  • cpe:2.3:a:buildah_project:buildah:0.10:*:*:*:*:*:*:*
    cpe:2.3:a:buildah_project:buildah:0.10:*:*:*:*:*:*:*
  • cpe:2.3:a:buildah_project:buildah:0.11:*:*:*:*:*:*:*
    cpe:2.3:a:buildah_project:buildah:0.11:*:*:*:*:*:*:*
  • cpe:2.3:a:buildah_project:buildah:0.12:*:*:*:*:*:*:*
    cpe:2.3:a:buildah_project:buildah:0.12:*:*:*:*:*:*:*
  • cpe:2.3:a:buildah_project:buildah:0.14:*:*:*:*:*:*:*
    cpe:2.3:a:buildah_project:buildah:0.14:*:*:*:*:*:*:*
  • cpe:2.3:a:buildah_project:buildah:0.15:*:*:*:*:*:*:*
    cpe:2.3:a:buildah_project:buildah:0.15:*:*:*:*:*:*:*
  • cpe:2.3:a:buildah_project:buildah:0.16.0:*:*:*:*:*:*:*
    cpe:2.3:a:buildah_project:buildah:0.16.0:*:*:*:*:*:*:*
  • cpe:2.3:a:buildah_project:buildah:1.0:*:*:*:*:*:*:*
    cpe:2.3:a:buildah_project:buildah:1.0:*:*:*:*:*:*:*
  • cpe:2.3:a:buildah_project:buildah:1.1:*:*:*:*:*:*:*
    cpe:2.3:a:buildah_project:buildah:1.1:*:*:*:*:*:*:*
  • cpe:2.3:a:buildah_project:buildah:1.2:*:*:*:*:*:*:*
    cpe:2.3:a:buildah_project:buildah:1.2:*:*:*:*:*:*:*
  • cpe:2.3:a:buildah_project:buildah:1.3:*:*:*:*:*:*:*
    cpe:2.3:a:buildah_project:buildah:1.3:*:*:*:*:*:*:*
  • cpe:2.3:a:buildah_project:buildah:1.4:*:*:*:*:*:*:*
    cpe:2.3:a:buildah_project:buildah:1.4:*:*:*:*:*:*:*
  • cpe:2.3:a:buildah_project:buildah:1.5:*:*:*:*:*:*:*
    cpe:2.3:a:buildah_project:buildah:1.5:*:*:*:*:*:*:*
  • cpe:2.3:a:buildah_project:buildah:1.6:*:*:*:*:*:*:*
    cpe:2.3:a:buildah_project:buildah:1.6:*:*:*:*:*:*:*
  • cpe:2.3:a:buildah_project:buildah:1.7:*:*:*:*:*:*:*
    cpe:2.3:a:buildah_project:buildah:1.7:*:*:*:*:*:*:*
  • cpe:2.3:a:buildah_project:buildah:1.7.1:*:*:*:*:*:*:*
    cpe:2.3:a:buildah_project:buildah:1.7.1:*:*:*:*:*:*:*
  • cpe:2.3:a:buildah_project:buildah:1.7.2:*:*:*:*:*:*:*
    cpe:2.3:a:buildah_project:buildah:1.7.2:*:*:*:*:*:*:*
  • cpe:2.3:a:buildah_project:buildah:1.7.3:*:*:*:*:*:*:*
    cpe:2.3:a:buildah_project:buildah:1.7.3:*:*:*:*:*:*:*
  • cpe:2.3:a:buildah_project:buildah:1.8.0:*:*:*:*:*:*:*
    cpe:2.3:a:buildah_project:buildah:1.8.0:*:*:*:*:*:*:*
  • cpe:2.3:a:buildah_project:buildah:1.8.1:*:*:*:*:*:*:*
    cpe:2.3:a:buildah_project:buildah:1.8.1:*:*:*:*:*:*:*
  • cpe:2.3:a:buildah_project:buildah:1.8.2:*:*:*:*:*:*:*
    cpe:2.3:a:buildah_project:buildah:1.8.2:*:*:*:*:*:*:*
  • cpe:2.3:a:buildah_project:buildah:1.8.3:*:*:*:*:*:*:*
    cpe:2.3:a:buildah_project:buildah:1.8.3:*:*:*:*:*:*:*
  • cpe:2.3:a:buildah_project:buildah:1.8.4:*:*:*:*:*:*:*
    cpe:2.3:a:buildah_project:buildah:1.8.4:*:*:*:*:*:*:*
  • cpe:2.3:a:buildah_project:buildah:1.9.0:*:*:*:*:*:*:*
    cpe:2.3:a:buildah_project:buildah:1.9.0:*:*:*:*:*:*:*
  • cpe:2.3:a:buildah_project:buildah:1.9.1:*:*:*:*:*:*:*
    cpe:2.3:a:buildah_project:buildah:1.9.1:*:*:*:*:*:*:*
  • cpe:2.3:a:buildah_project:buildah:1.9.2:*:*:*:*:*:*:*
    cpe:2.3:a:buildah_project:buildah:1.9.2:*:*:*:*:*:*:*
  • cpe:2.3:a:buildah_project:buildah:1.10.0:*:*:*:*:*:*:*
    cpe:2.3:a:buildah_project:buildah:1.10.0:*:*:*:*:*:*:*
  • cpe:2.3:a:buildah_project:buildah:1.10.1:*:*:*:*:*:*:*
    cpe:2.3:a:buildah_project:buildah:1.10.1:*:*:*:*:*:*:*
  • cpe:2.3:a:buildah_project:buildah:1.11.0:*:*:*:*:*:*:*
    cpe:2.3:a:buildah_project:buildah:1.11.0:*:*:*:*:*:*:*
  • cpe:2.3:a:buildah_project:buildah:1.11.1:*:*:*:*:*:*:*
    cpe:2.3:a:buildah_project:buildah:1.11.1:*:*:*:*:*:*:*
  • cpe:2.3:a:buildah_project:buildah:1.11.2:*:*:*:*:*:*:*
    cpe:2.3:a:buildah_project:buildah:1.11.2:*:*:*:*:*:*:*
  • cpe:2.3:a:buildah_project:buildah:1.11.3:*:*:*:*:*:*:*
    cpe:2.3:a:buildah_project:buildah:1.11.3:*:*:*:*:*:*:*
  • cpe:2.3:a:buildah_project:buildah:1.11.4:*:*:*:*:*:*:*
    cpe:2.3:a:buildah_project:buildah:1.11.4:*:*:*:*:*:*:*
  • cpe:2.3:a:buildah_project:buildah:1.11.5:*:*:*:*:*:*:*
    cpe:2.3:a:buildah_project:buildah:1.11.5:*:*:*:*:*:*:*
  • cpe:2.3:a:buildah_project:buildah:1.11.6:*:*:*:*:*:*:*
    cpe:2.3:a:buildah_project:buildah:1.11.6:*:*:*:*:*:*:*
  • cpe:2.3:a:buildah_project:buildah:1.12.0:*:*:*:*:*:*:*
    cpe:2.3:a:buildah_project:buildah:1.12.0:*:*:*:*:*:*:*
  • cpe:2.3:a:buildah_project:buildah:1.13.0:*:*:*:*:*:*:*
    cpe:2.3:a:buildah_project:buildah:1.13.0:*:*:*:*:*:*:*
  • cpe:2.3:a:buildah_project:buildah:1.13.1:*:*:*:*:*:*:*
    cpe:2.3:a:buildah_project:buildah:1.13.1:*:*:*:*:*:*:*
  • cpe:2.3:a:buildah_project:buildah:1.13.2:*:*:*:*:*:*:*
    cpe:2.3:a:buildah_project:buildah:1.13.2:*:*:*:*:*:*:*
  • cpe:2.3:a:buildah_project:buildah:1.14.0:*:*:*:*:*:*:*
    cpe:2.3:a:buildah_project:buildah:1.14.0:*:*:*:*:*:*:*
  • cpe:2.3:a:buildah_project:buildah:1.14.1:*:*:*:*:*:*:*
    cpe:2.3:a:buildah_project:buildah:1.14.1:*:*:*:*:*:*:*
  • cpe:2.3:a:buildah_project:buildah:1.14.2:*:*:*:*:*:*:*
    cpe:2.3:a:buildah_project:buildah:1.14.2:*:*:*:*:*:*:*
  • cpe:2.3:a:buildah_project:buildah:1.14.3:*:*:*:*:*:*:*
    cpe:2.3:a:buildah_project:buildah:1.14.3:*:*:*:*:*:*:*
  • cpe:2.3:a:buildah_project:buildah:1.14.5:*:*:*:*:*:*:*
    cpe:2.3:a:buildah_project:buildah:1.14.5:*:*:*:*:*:*:*
  • cpe:2.3:a:buildah_project:buildah:1.14.6:*:*:*:*:*:*:*
    cpe:2.3:a:buildah_project:buildah:1.14.6:*:*:*:*:*:*:*
  • cpe:2.3:a:buildah_project:buildah:1.14.7:*:*:*:*:*:*:*
    cpe:2.3:a:buildah_project:buildah:1.14.7:*:*:*:*:*:*:*
  • cpe:2.3:a:buildah_project:buildah:1.14.8:*:*:*:*:*:*:*
    cpe:2.3:a:buildah_project:buildah:1.14.8:*:*:*:*:*:*:*
  • cpe:2.3:a:buildah_project:buildah:1.14.9:*:*:*:*:*:*:*
    cpe:2.3:a:buildah_project:buildah:1.14.9:*:*:*:*:*:*:*
  • cpe:2.3:a:buildah_project:buildah:1.14.10:*:*:*:*:*:*:*
    cpe:2.3:a:buildah_project:buildah:1.14.10:*:*:*:*:*:*:*
  • cpe:2.3:a:buildah_project:buildah:1.14.11:*:*:*:*:*:*:*
    cpe:2.3:a:buildah_project:buildah:1.14.11:*:*:*:*:*:*:*
  • cpe:2.3:a:buildah_project:buildah:1.15.0:*:*:*:*:*:*:*
    cpe:2.3:a:buildah_project:buildah:1.15.0:*:*:*:*:*:*:*
  • cpe:2.3:a:buildah_project:buildah:1.15.1:*:*:*:*:*:*:*
    cpe:2.3:a:buildah_project:buildah:1.15.1:*:*:*:*:*:*:*
  • cpe:2.3:a:buildah_project:buildah:1.15.2:*:*:*:*:*:*:*
    cpe:2.3:a:buildah_project:buildah:1.15.2:*:*:*:*:*:*:*
  • cpe:2.3:a:buildah_project:buildah:1.16.0:*:*:*:*:*:*:*
    cpe:2.3:a:buildah_project:buildah:1.16.0:*:*:*:*:*:*:*
  • cpe:2.3:a:buildah_project:buildah:1.16.1:*:*:*:*:*:*:*
    cpe:2.3:a:buildah_project:buildah:1.16.1:*:*:*:*:*:*:*
  • cpe:2.3:a:buildah_project:buildah:1.16.2:*:*:*:*:*:*:*
    cpe:2.3:a:buildah_project:buildah:1.16.2:*:*:*:*:*:*:*
  • cpe:2.3:a:buildah_project:buildah:1.16.3:*:*:*:*:*:*:*
    cpe:2.3:a:buildah_project:buildah:1.16.3:*:*:*:*:*:*:*
  • cpe:2.3:a:buildah_project:buildah:1.16.4:*:*:*:*:*:*:*
    cpe:2.3:a:buildah_project:buildah:1.16.4:*:*:*:*:*:*:*
  • cpe:2.3:a:buildah_project:buildah:1.16.5:*:*:*:*:*:*:*
    cpe:2.3:a:buildah_project:buildah:1.16.5:*:*:*:*:*:*:*
  • cpe:2.3:a:buildah_project:buildah:1.16.6:*:*:*:*:*:*:*
    cpe:2.3:a:buildah_project:buildah:1.16.6:*:*:*:*:*:*:*
  • cpe:2.3:a:buildah_project:buildah:1.16.7:*:*:*:*:*:*:*
    cpe:2.3:a:buildah_project:buildah:1.16.7:*:*:*:*:*:*:*
  • cpe:2.3:a:buildah_project:buildah:1.17.0:*:*:*:*:*:*:*
    cpe:2.3:a:buildah_project:buildah:1.17.0:*:*:*:*:*:*:*
  • cpe:2.3:a:buildah_project:buildah:1.17.1:*:*:*:*:*:*:*
    cpe:2.3:a:buildah_project:buildah:1.17.1:*:*:*:*:*:*:*
  • cpe:2.3:a:buildah_project:buildah:1.19.0:*:*:*:*:*:*:*
    cpe:2.3:a:buildah_project:buildah:1.19.0:*:*:*:*:*:*:*
  • cpe:2.3:a:buildah_project:buildah:1.19.1:*:*:*:*:*:*:*
    cpe:2.3:a:buildah_project:buildah:1.19.1:*:*:*:*:*:*:*
  • cpe:2.3:a:buildah_project:buildah:1.19.2:*:*:*:*:*:*:*
    cpe:2.3:a:buildah_project:buildah:1.19.2:*:*:*:*:*:*:*
  • cpe:2.3:a:buildah_project:buildah:1.19.3:*:*:*:*:*:*:*
    cpe:2.3:a:buildah_project:buildah:1.19.3:*:*:*:*:*:*:*
  • cpe:2.3:a:buildah_project:buildah:1.19.4:*:*:*:*:*:*:*
    cpe:2.3:a:buildah_project:buildah:1.19.4:*:*:*:*:*:*:*
  • cpe:2.3:a:buildah_project:buildah:1.19.6:*:*:*:*:*:*:*
    cpe:2.3:a:buildah_project:buildah:1.19.6:*:*:*:*:*:*:*
  • cpe:2.3:a:buildah_project:buildah:1.19.7:*:*:*:*:*:*:*
    cpe:2.3:a:buildah_project:buildah:1.19.7:*:*:*:*:*:*:*
  • cpe:2.3:a:buildah_project:buildah:1.19.8:*:*:*:*:*:*:*
    cpe:2.3:a:buildah_project:buildah:1.19.8:*:*:*:*:*:*:*
  • cpe:2.3:a:buildah_project:buildah:1.21.0:*:*:*:*:*:*:*
    cpe:2.3:a:buildah_project:buildah:1.21.0:*:*:*:*:*:*:*
  • cpe:2.3:a:buildah_project:buildah:1.21.1:*:*:*:*:*:*:*
    cpe:2.3:a:buildah_project:buildah:1.21.1:*:*:*:*:*:*:*
  • cpe:2.3:a:buildah_project:buildah:1.21.2:*:*:*:*:*:*:*
    cpe:2.3:a:buildah_project:buildah:1.21.2:*:*:*:*:*:*:*
  • cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*
    cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*
  • cpe:2.3:o:redhat:enterprise_linux_for_ibm_z_systems:8.0:*:*:*:*:*:*:*
    cpe:2.3:o:redhat:enterprise_linux_for_ibm_z_systems:8.0:*:*:*:*:*:*:*
  • cpe:2.3:o:redhat:enterprise_linux_for_power_little_endian:8.0:*:*:*:*:*:*:*
    cpe:2.3:o:redhat:enterprise_linux_for_power_little_endian:8.0:*:*:*:*:*:*:*

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