CVE-2023-5678 Vulnerability Analysis & Exploit Details

CVE-2023-5678
Vulnerability Scoring

5.3

/10

Significant Risk

Security assessments indicate that CVE-2023-5678 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: Unchanged
Exploit remains within the originally vulnerable component.
User Interaction: None
No user interaction is necessary for exploitation.

CVE-2023-5678 Details

Status: Modified

Last updated: 🕣 21 Nov 2024, 08:42 UTC
Originally published on: 🕓 06 Nov 2023, 16:15 UTC

Time between publication and last update: 380 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:U/C:N/I:N/A:L

CVE-2023-5678 Vulnerability Summary

CVE-2023-5678: Issue summary: Generating excessively long X9.42 DH keys or checking excessively long X9.42 DH keys or parameters may be very slow. Impact summary: Applications that use the functions DH_generate_key() to generate an X9.42 DH key may experience long delays. Likewise, applications that use DH_check_pub_key(), DH_check_pub_key_ex() or EVP_PKEY_public_check() to check an X9.42 DH key or X9.42 DH parameters may experience long delays. Where the key or parameters that are being checked have been obtained from an untrusted source this may lead to a Denial of Service. While DH_check() performs all the necessary checks (as of CVE-2023-3817), DH_check_pub_key() doesn't make any of these checks, and is therefore vulnerable for excessively large P and Q parameters. Likewise, while DH_generate_key() performs a check for an excessively large P, it doesn't check for an excessively large Q. An application that calls DH_generate_key() or DH_check_pub_key() and supplies a key or parameters obtained from an untrusted source could be vulnerable to a Denial of Service attack. DH_generate_key() and DH_check_pub_key() are also called by a number of other OpenSSL functions. An application calling any of those other functions may similarly be affected. The other functions affected by this are DH_check_pub_key_ex(), EVP_PKEY_public_check(), and EVP_PKEY_generate(). Also vulnerable are the OpenSSL pkey command line application when using the "-pubcheck" option, as well as the OpenSSL genpkey command line application. The OpenSSL SSL/TLS implementation is not affected by this issue. The OpenSSL 3.0 and 3.1 FIPS providers are not affected by this issue.

Assessing the Risk of CVE-2023-5678

Access Complexity Graph

The exploitability of CVE-2023-5678 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-2023-5678

With low attack complexity and no required privileges, CVE-2023-5678 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-2023-5678, 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-2023-5678, showing how Confidentiality, Integrity, and Availability might be affected if the vulnerability is exploited. Higher values usually signal greater potential damage.

Confidentiality: None
CVE-2023-5678 has no significant impact on data confidentiality.
Integrity: None
CVE-2023-5678 poses no threat to data integrity.
Availability: Low
CVE-2023-5678 may slightly degrade system performance without fully affecting service availability.

Exploit Prediction Scoring System (EPSS)

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

EPSS Score: 0.14% (probability of exploit)

EPSS Percentile: 51.16% (lower percentile = lower relative risk)
This vulnerability is less risky than approximately 48.84% of others.

CVE-2023-5678 References

External References

CWE Common Weakness Enumeration

CWE-754

Vulnerable Configurations

cpe:2.3:a:openssl:openssl:1.0.2:-:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:1.0.2:-:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:1.0.2a:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:1.0.2a:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:1.0.2b:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:1.0.2b:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:1.0.2c:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:1.0.2c:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:1.0.2d:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:1.0.2d:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:1.0.2e:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:1.0.2e:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:1.0.2f:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:1.0.2f:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:1.0.2g:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:1.0.2g:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:1.0.2h:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:1.0.2h:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:1.0.2i:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:1.0.2i:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:1.0.2j:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:1.0.2j:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:1.0.2k:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:1.0.2k:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:1.0.2l:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:1.0.2l:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:1.0.2m:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:1.0.2m:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:1.0.2n:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:1.0.2n:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:1.0.2o:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:1.0.2o:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:1.0.2p:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:1.0.2p:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:1.0.2q:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:1.0.2q:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:1.0.2r:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:1.0.2r:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:1.0.2s:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:1.0.2s:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:1.0.2t:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:1.0.2t:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:1.0.2u:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:1.0.2u:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:1.0.2v:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:1.0.2v:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:1.0.2w:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:1.0.2w:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:1.0.2x:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:1.0.2x:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:1.0.2y:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:1.0.2y:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:1.0.2za:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:1.0.2za:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:1.0.2zb:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:1.0.2zb:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:1.0.2zc:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:1.0.2zc:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:1.0.2zd:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:1.0.2zd:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:1.0.2ze:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:1.0.2ze:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:1.0.2zf:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:1.0.2zf:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:1.0.2zg:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:1.0.2zg:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:1.0.2zh:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:1.0.2zh:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:1.0.2zi:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:1.0.2zi:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:1.1.1:-:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:1.1.1:-:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:1.1.1a:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:1.1.1a:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:1.1.1b:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:1.1.1b:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:1.1.1c:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:1.1.1c:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:1.1.1d:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:1.1.1d:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:1.1.1e:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:1.1.1e:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:1.1.1f:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:1.1.1f:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:1.1.1g:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:1.1.1g:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:1.1.1h:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:1.1.1h:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:1.1.1i:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:1.1.1i:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:1.1.1j:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:1.1.1j:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:1.1.1k:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:1.1.1k:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:1.1.1l:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:1.1.1l:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:1.1.1m:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:1.1.1m:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:1.1.1n:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:1.1.1n:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:1.1.1o:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:1.1.1o:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:1.1.1p:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:1.1.1p:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:1.1.1q:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:1.1.1q:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:1.1.1r:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:1.1.1r:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:1.1.1s:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:1.1.1s:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:1.1.1t:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:1.1.1t:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:1.1.1u:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:1.1.1u:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:1.1.1v:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:1.1.1v:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:1.1.1w:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:1.1.1w:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:3.0.0:-:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:3.0.0:-:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:3.0.0:beta1:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:3.0.0:beta1:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:3.0.0:beta2:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:3.0.0:beta2:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:3.0.0:alpha1:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:3.0.0:alpha1:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:3.0.0:alpha10:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:3.0.0:alpha10:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:3.0.0:alpha11:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:3.0.0:alpha11:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:3.0.0:alpha12:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:3.0.0:alpha12:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:3.0.0:alpha13:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:3.0.0:alpha13:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:3.0.0:alpha14:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:3.0.0:alpha14:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:3.0.0:alpha15:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:3.0.0:alpha15:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:3.0.0:alpha16:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:3.0.0:alpha16:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:3.0.0:alpha17:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:3.0.0:alpha17:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:3.0.0:alpha2:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:3.0.0:alpha2:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:3.0.0:alpha3:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:3.0.0:alpha3:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:3.0.0:alpha4:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:3.0.0:alpha4:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:3.0.0:alpha5:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:3.0.0:alpha5:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:3.0.0:alpha6:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:3.0.0:alpha6:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:3.0.0:alpha7:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:3.0.0:alpha7:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:3.0.0:alpha8:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:3.0.0:alpha8:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:3.0.0:alpha9:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:3.0.0:alpha9:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:3.0.1:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:3.0.1:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:3.0.2:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:3.0.2:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:3.0.3:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:3.0.3:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:3.0.4:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:3.0.4:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:3.0.5:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:3.0.5:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:3.0.6:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:3.0.6:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:3.0.7:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:3.0.7:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:3.0.8:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:3.0.8:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:3.0.9:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:3.0.9:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:3.0.10:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:3.0.10:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:3.0.11:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:3.0.11:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:3.0.12:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:3.0.12:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:3.1.0:-:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:3.1.0:-:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:3.1.0:beta1:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:3.1.0:beta1:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:3.1.0:alpha1:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:3.1.0:alpha1:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:3.1.1:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:3.1.1:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:3.1.1:-:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:3.1.1:-:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:3.1.2:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:3.1.2:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:3.1.3:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:3.1.3:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:3.1.4:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:3.1.4:*:*:*:*:*:*:*

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