CVE-2023-0547 Security Vulnerability & Exploit Details

CVE-2023-0547
Vulnerability Scoring

6.5

/10

High Risk

If left unpatched, CVE-2023-0547 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: Network
Vulnerability is exploitable over a network without physical access.
Privileges Required: None
No privileges are required for exploitation.
Scope: Unchanged
Exploit remains within the originally vulnerable component.
User Interaction: Required
User interaction is necessary for successful exploitation.

CVE-2023-0547 Details

Status: Modified

Last updated: 🕖 10 Jan 2025, 19:15 UTC
Originally published on: 🕔 02 Jun 2023, 17:15 UTC

Time between publication and last update: 588 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:R/S:U/C:N/I:H/A:N

CVE-2023-0547 Vulnerability Summary

CVE-2023-0547: OCSP revocation status of recipient certificates was not checked when sending S/Mime encrypted email, and revoked certificates would be accepted. Thunderbird versions from 68 to 102.9.1 were affected by this bug. This vulnerability affects Thunderbird < 102.10.

Assessing the Risk of CVE-2023-0547

Access Complexity Graph

The exploitability of CVE-2023-0547 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-2023-0547

With low attack complexity and no required privileges, CVE-2023-0547 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-2023-0547, 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-2023-0547, showing how Confidentiality, Integrity, and Availability might be affected if the vulnerability is exploited. Higher values usually signal greater potential damage.

Confidentiality: None
CVE-2023-0547 has no significant impact on data confidentiality.
Integrity: High
CVE-2023-0547 could allow unauthorized modifications to data, potentially affecting system reliability and trust.
Availability: None
CVE-2023-0547 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: 0.061% (probability of exploit)

EPSS Percentile: 29.22% (lower percentile = lower relative risk)
This vulnerability is less risky than approximately 70.78% of others.

CVE-2023-0547 References

External References

CWE Common Weakness Enumeration

CWE-295

CAPEC Common Attack Pattern Enumeration and Classification

Creating a Rogue Certification Authority Certificate CAPEC-459 An adversary exploits a weakness resulting from using a hashing algorithm with weak collision resistance to generate certificate signing requests (CSR) that contain collision blocks in their "to be signed" parts. The adversary submits one CSR to be signed by a trusted certificate authority then uses the signed blob to make a second certificate appear signed by said certificate authority. Due to the hash collision, both certificates, though different, hash to the same value and so the signed blob works just as well in the second certificate. The net effect is that the adversary's second X.509 certificate, which the Certification Authority has never seen, is now signed and validated by that Certification Authority.
Signature Spoofing by Improper Validation CAPEC-475 An adversary exploits a cryptographic weakness in the signature verification algorithm implementation to generate a valid signature without knowing the key.

Vulnerable Configurations

cpe:2.3:a:mozilla:thunderbird:68.0:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:68.0:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:68.0:-:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:68.0:-:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:68.0:beta1:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:68.0:beta1:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:68.0:beta2:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:68.0:beta2:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:68.0:beta3:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:68.0:beta3:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:68.0:beta4:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:68.0:beta4:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:68.0:beta5:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:68.0:beta5:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:68.1:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:68.1:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:68.1.0:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:68.1.0:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:68.1.1:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:68.1.1:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:68.1.2:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:68.1.2:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:68.2.0:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:68.2.0:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:68.2.1:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:68.2.1:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:68.2.2:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:68.2.2:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:68.3.0:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:68.3.0:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:68.3.1:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:68.3.1:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:68.4.1:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:68.4.1:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:68.5.0:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:68.5.0:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:68.6.0:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:68.6.0:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:68.7.0:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:68.7.0:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:68.8.0:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:68.8.0:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:68.9.0:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:68.9.0:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:68.10.0:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:68.10.0:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:68.11:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:68.11:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:68.12:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:68.12:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:78.0:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:78.0:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:78.0.1:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:78.0.1:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:78.1:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:78.1:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:78.1.0:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:78.1.0:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:78.1.1:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:78.1.1:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:78.2:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:78.2:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:78.3:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:78.3:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:78.4.0:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:78.4.0:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:78.4.2:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:78.4.2:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:78.5:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:78.5:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:78.5.1:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:78.5.1:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:78.6.0:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:78.6.0:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:78.6.1:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:78.6.1:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:78.7.0:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:78.7.0:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:78.7.1:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:78.7.1:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:78.8.0:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:78.8.0:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:78.8.1:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:78.8.1:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:78.9.0:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:78.9.0:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:78.9.1:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:78.9.1:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:78.10.0:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:78.10.0:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:78.10.1:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:78.10.1:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:78.10.2:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:78.10.2:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:78.11.0:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:78.11.0:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:78.12.0:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:78.12.0:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:78.13.0:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:78.13.0:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:78.14:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:78.14:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:78.15:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:78.15:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:91.0:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:91.0:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:91.0.1:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:91.0.1:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:91.0.2:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:91.0.2:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:91.0.3:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:91.0.3:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:91.1:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:91.1:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:91.2:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:91.2:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:91.3.0:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:91.3.0:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:91.4.0:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:91.4.0:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:91.5:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:91.5:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:91.6:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:91.6:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:91.6.1:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:91.6.1:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:91.7:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:91.7:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:91.8:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:91.8:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:91.9:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:91.9:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:91.9.1:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:91.9.1:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:91.10:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:91.10:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:91.11:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:91.11:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:91.12:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:91.12:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:91.13:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:91.13:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:91.13.1:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:91.13.1:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:101.0:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:101.0:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:102.0:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:102.0:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:102.1:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:102.1:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:102.2:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:102.2:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:102.2.1:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:102.2.1:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:102.5:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:102.5:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:102.5.1:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:102.5.1:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:102.6:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:102.6:*:*:*:*:*:*:*

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CVE-2023-0547 Vulnerability Scoring