CVE-2019-16791

downgrade of effective Strict Transport Security (STS) policy in postfix-mta-sts-resolver

Description

In postfix-mta-sts-resolver before 0.5.1, All users can receive incorrect response from daemon under rare conditions, rendering downgrade of effective STS policy.

Category

6.9
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.30%
Third-Party Advisory github.com Third-Party Advisory github.com
Affected: Snawoot postfix-mta-sts-resolver
Published at:
Updated at:

References

Link Tags
https://github.com/Snawoot/postfix-mta-sts-resolver/security/advisories/GHSA-h92m-42h4-82f6 third party advisory patch
https://gist.github.com/Snawoot/b9da85d6b26dea5460673b29df1adc6b third party advisory patch

Frequently Asked Questions

What is the severity of CVE-2019-16791?
CVE-2019-16791 has been scored as a medium severity vulnerability.
How to fix CVE-2019-16791?
To fix CVE-2019-16791, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2019-16791 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2019-16791 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2019-16791?
CVE-2019-16791 affects Snawoot postfix-mta-sts-resolver.
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