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CVE-2023-46849

HIGHCVSS 7.5/10EPSS 1.14%

Last modified

CVE-2023-46849 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. Using the --fragment option in certain configuration setups OpenVPN version 2.6.0 to 2.6.6 allows an attacker to trigger a divide by zero behaviour which could cause an application crash, leading to a denial of service.. EPSS estimates a 1.14% chance of exploitation in the next 30 days.

Description

Using the --fragment option in certain configuration setups OpenVPN version 2.6.0 to 2.6.6 allows an attacker to trigger a divide by zero behaviour which could cause an application crash, leading to a denial of service.

Metrics

CVSS 3.1
7.5/10

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

EPSS Probability
1.14%

62.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
OpenvpnOpenvpn>= 2.6.0, <= 2.6.6
OpenvpnOpenvpn Access Server>= 2.11.0, <= 2.11.3
OpenvpnOpenvpn Access Server2.12.0
OpenvpnOpenvpn Access Server2.12.1
DebianDebian Linux12.0
FedoraprojectFedora39

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2023-46849?
Using the --fragment option in certain configuration setups OpenVPN version 2.6.0 to 2.6.6 allows an attacker to trigger a divide by zero behaviour which could cause an application crash, leading to a denial of service.
How severe is CVE-2023-46849?
CVE-2023-46849 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 1.14% probability of exploitation in the next 30 days.
How do I fix CVE-2023-46849?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2023-46849?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST