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CVE-2020-35679

HIGHCVSS 7.5/10EPSS 2.83%

Last modified

CVE-2020-35679 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. smtpd/table.c in OpenSMTPD before 6.8.0p1 lacks a certain regfree, which might allow attackers to trigger a "very significant" memory leak via messages to an instance that performs many regex lookups.. EPSS estimates a 2.83% chance of exploitation in the next 30 days.

Description

smtpd/table.c in OpenSMTPD before 6.8.0p1 lacks a certain regfree, which might allow attackers to trigger a "very significant" memory leak via messages to an instance that performs many regex lookups.

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
2.83%

84.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
OpensmtpdOpensmtpd< 6.8.0
OpensmtpdOpensmtpd6.8.0
FedoraprojectFedora32
FedoraprojectFedora33

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2020-35679?
smtpd/table.c in OpenSMTPD before 6.8.0p1 lacks a certain regfree, which might allow attackers to trigger a "very significant" memory leak via messages to an instance that performs many regex lookups.
How severe is CVE-2020-35679?
CVE-2020-35679 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 2.83% probability of exploitation in the next 30 days.
How do I fix CVE-2020-35679?
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-2020-35679?

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

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Source: NVD / NIST