National Cyber Awareness System

Vulnerability Summary for CVE-2012-5671

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.

Impact

CVSS Severity (version 2.0):

CVSS Version 2 Metrics:

References to Advisories, Solutions, and Tools

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External Source: MLIST

Name: [exim-announce] 20121026 Exim 4.80.1 Security Release

Hyperlink:https://lists.exim.org/lurker/message/20121026.080330.74b9147b.en.html

External Source: XF

Name: exim-dkimeximquerydnstxt-bo(79615)

Hyperlink:http://xforce.iss.net/xforce/xfdb/79615

External Source: UBUNTU

Name: USN-1618-1

Hyperlink:http://www.ubuntu.com/usn/USN-1618-1

External Source: BID

Name: 56285

Hyperlink:http://www.securityfocus.com/bid/56285

External Source: MLIST

Name: [oss-security] 20121027 CVE-2012-5671: Exim <= 4.80 DKIM heap-based buffer overflow

Hyperlink:http://www.openwall.com/lists/oss-security/2012/10/26/5

External Source: DEBIAN

Name: DSA-2566

Hyperlink:http://www.debian.org/security/2012/dsa-2566

External Source: SECUNIA

Name: 51155

Hyperlink:http://secunia.com/advisories/51155

External Source: SECUNIA

Name: 51153

Hyperlink:http://secunia.com/advisories/51153

External Source: SECUNIA

Name: 51115

Hyperlink:http://secunia.com/advisories/51115

External Source: SECUNIA

Name: 51098

Type: Advisory

Hyperlink:http://secunia.com/advisories/51098

External Source: OSVDB

Name: 86616

Hyperlink:http://osvdb.org/86616

External Source: SUSE

Name: openSUSE-SU-2012:1404

Hyperlink:http://lists.opensuse.org/opensuse-security-announce/2012-10/msg00018.html

External Source: FEDORA

Name: FEDORA-2012-17085

Hyperlink:http://lists.fedoraproject.org/pipermail/package-announce/2012-October/090963.html

External Source: FEDORA

Name: FEDORA-2012-17044

Hyperlink:http://lists.fedoraproject.org/pipermail/package-announce/2012-October/090900.html

External Source: FEDORA

Name: FEDORA-2012-16899

Hyperlink:http://lists.fedoraproject.org/pipermail/package-announce/2012-November/091664.html