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Debian Security Advisory 4611-1

Debian Security Advisory 4611-1
Posted Jan 30, 2020
Authored by Debian | Site debian.org

Debian Linux Security Advisory 4611-1 - 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.

tags | advisory, denial of service, arbitrary, root
systems | linux, debian
advisories | CVE-2020-7247
SHA-256 | b13a8757f4f9e0b2f590ed0cdbe4d23e4718fa37e2ea6ca4ed4d48c3bfa33f2a

Debian Security Advisory 4611-1

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- -------------------------------------------------------------------------
Debian Security Advisory DSA-4611-1 security@debian.org
https://www.debian.org/security/ Moritz Muehlenhoff
January 29, 2020 https://www.debian.org/security/faq
- -------------------------------------------------------------------------

Package : opensmtpd
CVE ID : CVE-2020-7247
Debian Bug : 950121

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.

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.

For the detailed security status of opensmtpd please refer to
its security tracker page at:
https://security-tracker.debian.org/tracker/opensmtpd

Further information about Debian Security Advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://www.debian.org/security/

Mailing list: debian-security-announce@lists.debian.org
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