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Debian Security Advisory 4510-1

Debian Security Advisory 4510-1
Posted Aug 28, 2019
Authored by Debian | Site debian.org

Debian Linux Security Advisory 4510-1 - 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.

tags | advisory, remote, arbitrary, imap, protocol
systems | linux, debian
advisories | CVE-2019-11500
MD5 | e3cf7ec7b9e533f10132ece6c1ce8f6b

Debian Security Advisory 4510-1

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Hash: SHA512

- -------------------------------------------------------------------------
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
- -------------------------------------------------------------------------

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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