Source: opensmtpd
Version: 6.8.0p1~rc1-1
Severity: important
Tags: security upstream
X-Debbugs-Cc: [email protected], Debian Security Team <[email protected]>

Hi,

The following vulnerability was published for opensmtpd.

CVE-2020-35680[0]:
| smtpd/lka_filter.c in OpenSMTPD before 6.8.0p1, in certain
| configurations, allows remote attackers to cause a denial of service
| (NULL pointer dereference and daemon crash) via a crafted pattern of
| client activity, because the filter state machine does not properly
| maintain the I/O channel between the SMTP engine and the filters
| layer.


If you fix the vulnerability please also make sure to include the
CVE (Common Vulnerabilities & Exposures) id in your changelog entry.

For further information see:

[0] https://security-tracker.debian.org/tracker/CVE-2020-35680
    https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-35680
[1] 
https://github.com/openbsd/src/commit/6c3220444ed06b5796dedfd53a0f4becd903c0d1
[2] https://www.mail-archive.com/[email protected]/msg05188.html

Regards,
Salvatore

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