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Debian: Security Advisory for opensmtpd (DSA-4611-1)
Information
Severity
Severity
Family
Family
CVSSv2 Base
CVSSv2 Base
CVSSv2 Vector
CVSSv2 Vector
Solution Type
Solution Type
Created
Created
Modified
Modified
Summary
The remote host is missing an update for the 'opensmtpd' package(s) announced via the DSA-4611-1 advisory.
Insight
Insight
Qualys discovered that the OpenSMTPD SMTP server performed insufficient validation of email addresses which could result in the execution of arbitrary commands as root. In addition this update fixes a denial of service by triggering an opportunistic TLS downgrade.
Affected Software
Affected Software
'opensmtpd' package(s) on Debian Linux.
Detection Method
Detection Method
Checks if a vulnerable package version is present on the target host.
Solution
Solution
For the oldstable distribution (stretch), these problems have been fixed in version 6.0.2p1-2+deb9u2. For the stable distribution (buster), these problems have been fixed in version 6.0.3p1-5+deb10u3. This update also includes non-security bugfixes which were already lined up for the Buster 10.3 point release. We recommend that you upgrade your opensmtpd packages.