Protect yourself against future threats.
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AUSCERT External Security Bulletin Redistribution
ESB-2019.3261
dovecot security update
29 August 2019
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AusCERT Security Bulletin Summary
---------------------------------
Product: dovecot
Publisher: Debian
Operating System: Debian GNU/Linux 9
Debian GNU/Linux 10
Linux variants
Impact/Access: Denial of Service -- Existing Account
Execute Arbitrary Code/Commands -- Existing Account
Resolution: Patch/Upgrade
CVE Names: CVE-2019-11500
Original Bulletin:
http://www.debian.org/security/2019/dsa-4510
Comment: This advisory references vulnerabilities in products which run on
platforms other than Debian. It is recommended that administrators
running dovecot check for an updated version of the software for
their operating system.
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Debian Security Advisory DSA-4510-1 security@debian.org
https://www.debian.org/security/ Salvatore Bonaccorso
August 28, 2019 https://www.debian.org/security/faq
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Package : dovecot
CVE ID : CVE-2019-11500
Nick Roessler and Rafi Rubin discovered that the IMAP and ManageSieve
protocol parsers in the Dovecot email server do not properly validate
input (both pre- and post-login). A remote attacker can take advantage
of this flaw to trigger out of bounds heap memory writes, leading to
information leaks or potentially the execution of arbitrary code.
For the oldstable distribution (stretch), this problem has been fixed
in version 1:2.2.27-3+deb9u5.
For the stable distribution (buster), this problem has been fixed in
version 1:2.3.4.1-5+deb10u1.
We recommend that you upgrade your dovecot packages.
For the detailed security status of dovecot please refer to its security
tracker page at:
https://security-tracker.debian.org/tracker/dovecot
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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