CVE-2020-8929 Vulnerability Analysis & Exploit Details

Status: Modified - Last modified: 21 Nov 2024, 05:39 UTC Published: 19 Oct 2020, 13:15 UTC

CVE-2020-8929
Vulnerability Scoring

5.3
/10

Attack Complexity Details

  • Attack Complexity: Low Impact
  • Attack Vector: NETWORK
  • Privileges Required: None
  • Scope: UNCHANGED
  • User Interaction: NONE

CIA Impact Definition

  • Confidentiality:
  • Integrity: Low Impact
  • Availability:

CVE-2020-8929 Vulnerability Summary

A mis-handling of invalid unicode characters in the Java implementation of Tink versions prior to 1.5 allows an attacker to change the ID part of a ciphertext, which result in the creation of a second ciphertext that can decrypt to the same plaintext. This can be a problem with encrypting deterministic AEAD with a single key, and rely on a unique ciphertext-per-plaintext.

Access Complexity Graph

Above is the Access Complexity Graph for CVE-2020-8929. It helps visualize the difficulty level and privilege requirements needed to exploit this vulnerability, providing a quick assessment of its exploitation feasibility.

CVSS Score Breakdown Chart

Above is the CVSS Sub-score Breakdown for CVE-2020-8929, 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.

Impact Analysis

Below is the Impact Analysis for CVE-2020-8929, showing how Confidentiality, Integrity, and Availability might be affected if the vulnerability is exploited. Higher values usually signal greater potential damage.

Exploit Prediction Scoring System (EPSS)

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

EPSS Score: 0.056% (probability of exploit)

EPSS Percentile: 26.44% (lower percentile = lower relative risk)
This vulnerability is less risky than approximately 73.56% of others.

CVE-2020-8929 Detailed Information and External References

References

CWE

NVD-CWE-Other

Vulnerable Configurations

  • cpe:2.3:a:google:tink:1.0.0:*:*:*:*:*:*:*
    cpe:2.3:a:google:tink:1.0.0:*:*:*:*:*:*:*
  • cpe:2.3:a:google:tink:1.1.0:*:*:*:*:*:*:*
    cpe:2.3:a:google:tink:1.1.0:*:*:*:*:*:*:*
  • cpe:2.3:a:google:tink:1.1.1:*:*:*:*:*:*:*
    cpe:2.3:a:google:tink:1.1.1:*:*:*:*:*:*:*
  • cpe:2.3:a:google:tink:1.2.0:-:*:*:*:*:*:*
    cpe:2.3:a:google:tink:1.2.0:-:*:*:*:*:*:*
  • cpe:2.3:a:google:tink:1.2.0:rc2:*:*:*:*:*:*
    cpe:2.3:a:google:tink:1.2.0:rc2:*:*:*:*:*:*
  • cpe:2.3:a:google:tink:1.2.0:rc3:*:*:*:*:*:*
    cpe:2.3:a:google:tink:1.2.0:rc3:*:*:*:*:*:*
  • cpe:2.3:a:google:tink:1.2.0:rc4:*:*:*:*:*:*
    cpe:2.3:a:google:tink:1.2.0:rc4:*:*:*:*:*:*
  • cpe:2.3:a:google:tink:1.2.1:*:*:*:*:*:*:*
    cpe:2.3:a:google:tink:1.2.1:*:*:*:*:*:*:*
  • cpe:2.3:a:google:tink:1.2.2:*:*:*:*:*:*:*
    cpe:2.3:a:google:tink:1.2.2:*:*:*:*:*:*:*
  • cpe:2.3:a:google:tink:1.3.0:-:*:*:*:*:*:*
    cpe:2.3:a:google:tink:1.3.0:-:*:*:*:*:*:*
  • cpe:2.3:a:google:tink:1.3.0:rc1:*:*:*:*:*:*
    cpe:2.3:a:google:tink:1.3.0:rc1:*:*:*:*:*:*
  • cpe:2.3:a:google:tink:1.3.0:rc2:*:*:*:*:*:*
    cpe:2.3:a:google:tink:1.3.0:rc2:*:*:*:*:*:*
  • cpe:2.3:a:google:tink:1.3.0:rc3:*:*:*:*:*:*
    cpe:2.3:a:google:tink:1.3.0:rc3:*:*:*:*:*:*
  • cpe:2.3:a:google:tink:1.3.0:rc4:*:*:*:*:*:*
    cpe:2.3:a:google:tink:1.3.0:rc4:*:*:*:*:*:*
  • cpe:2.3:a:google:tink:1.4.0:-:*:*:*:*:*:*
    cpe:2.3:a:google:tink:1.4.0:-:*:*:*:*:*:*
  • cpe:2.3:a:google:tink:1.4.0:rc1:*:*:*:*:*:*
    cpe:2.3:a:google:tink:1.4.0:rc1:*:*:*:*:*:*
  • cpe:2.3:a:google:tink:1.4.0:rc2:*:*:*:*:*:*
    cpe:2.3:a:google:tink:1.4.0:rc2:*:*:*:*:*:*

CVSS3 Source

cve-coordination@google.com

CVSS3 Type

Secondary

CVSS3 Vector

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

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