CVE-2021-41581

Public Exploit

Description

x509_constraints_parse_mailbox in lib/libcrypto/x509/x509_constraints.c in LibreSSL through 3.4.0 has a stack-based buffer over-read. When the input exceeds DOMAIN_PART_MAX_LEN, the buffer lacks '\0' termination.

Category

5.5
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.30%
Third-Party Advisory github.com
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://github.com/libressl-portable/openbsd/issues/126 patch exploit third party advisory issue tracking

Frequently Asked Questions

What is the severity of CVE-2021-41581?
CVE-2021-41581 has been scored as a medium severity vulnerability.
How to fix CVE-2021-41581?
To fix CVE-2021-41581, 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-2021-41581 being actively exploited in the wild?
It is possible that CVE-2021-41581 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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