CVE-2021-35525

Description

PostSRSd before 1.11 allows a denial of service (subprocess hang) if Postfix sends certain long data fields such as multiple concatenated email addresses. NOTE: the PostSRSd maintainer acknowledges "theoretically, this error should never occur ... I'm not sure if there's a reliable way to trigger this condition by an external attacker, but it is a security bug in PostSRSd nevertheless."

5.3

CVSS

Severity: Medium

CVSS 3.1 •

CVSS 2.0 •

EPSS 0.12%

Vendor Advisory gentoo.org

Affected: n/a n/a

References

Link	Tags
https://github.com/roehling/postsrsd/releases/tag/1.11	third party advisory release notes
https://github.com/roehling/postsrsd/commit/077be98d8c8a9847e4ae0c7dc09e7474cbe27db2	third party advisory patch
https://bugs.gentoo.org/793674	patch release notes third party advisory issue tracking
https://security.gentoo.org/glsa/202107-08	third party advisory vendor advisory

Frequently Asked Questions

What is the severity of CVE-2021-35525?: CVE-2021-35525 has been scored as a medium severity vulnerability.
How to fix CVE-2021-35525?: To fix CVE-2021-35525, 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-2021-35525 being actively exploited in the wild?: As for now, there are no information to confirm that CVE-2021-35525 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.

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