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CVE-2012-5671

Status Candidate

Overview

Heap-based buffer overflow in the dkim_exim_query_dns_txt function in dkim.c in Exim 4.70 through 4.80, when DKIM support is enabled and acl_smtp_connect and acl_smtp_rcpt are not set to "warn control = dkim_disable_verify," allows remote attackers to execute arbitrary code via an email from a malicious DNS server.

Related Files

Gentoo Linux Security Advisory 201401-32
Posted Jan 27, 2014
Authored by Gentoo | Site security.gentoo.org

Gentoo Linux Security Advisory 201401-32 - Multiple vulnerabilities were found in Exim, the worst of which leading to remote execution of arbitrary code with root privileges. Versions less than 4.80.1 are affected.

tags | advisory, remote, arbitrary, root, vulnerability
systems | linux, gentoo
advisories | CVE-2010-2023, CVE-2010-2024, CVE-2010-4344, CVE-2010-4345, CVE-2011-0017, CVE-2011-1407, CVE-2011-1764, CVE-2012-5671
SHA-256 | e3a4e4748cd68f2fd685d0f69f6b2dbf2c95867f71a5d365a61fe7544703c801
Debian Security Advisory 2566-1
Posted Oct 26, 2012
Authored by Debian | Site debian.org

Debian Linux Security Advisory 2566-1 - It was discovered that Exim, a mail transport agent, is not properly handling the decoding of DNS records for DKIM. Specifically, crafted records can yield to a heap-based buffer overflow. An attacker can exploit this flaw to execute arbitrary code.

tags | advisory, overflow, arbitrary
systems | linux, debian
advisories | CVE-2012-5671
SHA-256 | db45c689499a88f8489df5e20ca7f2308465812b000bd38146acd009a2dd42a1
Ubuntu Security Notice USN-1618-1
Posted Oct 26, 2012
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 1618-1 - It was discovered that Exim incorrectly handled DKIM DNS decoding. This flaw could allow a remote attacker to execute arbitrary code.

tags | advisory, remote, arbitrary
systems | linux, ubuntu
advisories | CVE-2012-5671
SHA-256 | 1aa6092f2eedee2d304f571946cd33139c425f5a72ba8acf5eae714670a9a625
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