Source: dovecot
Version: 1:2.3.7.2-1
Severity: grave
Tags: security upstream
Justification: user security hole
Control: found -1 1:2.3.4.1-5+deb10u1
Control: found -1 1:2.3.2-1

Hi,

The following vulnerabilities were published for dovecot.

CVE-2020-10957[0]:
| In Dovecot before 2.3.10.1, unauthenticated sending of malformed
| parameters to a NOOP command causes a NULL Pointer Dereference and
| crash in submission-login, submission, or lmtp.


CVE-2020-10958[1]:
| In Dovecot before 2.3.10.1, a crafted SMTP/LMTP message triggers an
| unauthenticated use-after-free bug in submission-login, submission, or
| lmtp, and can lead to a crash under circumstances involving many
| newlines after a command.


CVE-2020-10967[2]:
| In Dovecot before 2.3.10.1, remote unauthenticated attackers can crash
| the lmtp or submission process by sending mail with an empty
| localpart.


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

For further information see:

[0] https://security-tracker.debian.org/tracker/CVE-2020-10957
    https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-10957
[1] https://security-tracker.debian.org/tracker/CVE-2020-10958
    https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-10958
[2] https://security-tracker.debian.org/tracker/CVE-2020-10967
    https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-10967

Please adjust the affected versions in the BTS as needed.

Regards,
Salvatore

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