Vulnerability Details : CVE-2012-5671
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.
Vulnerability category: OverflowExecute code
Threat overview for CVE-2012-5671
Top countries where our scanners detected CVE-2012-5671
Top open port discovered on systems with this issue
80
IPs affected by CVE-2012-5671 1,615
Threat actors abusing to this issue?
Yes
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Exploit prediction scoring system (EPSS) score for CVE-2012-5671
Probability of exploitation activity in the next 30 days: 70.17%
Percentile, the proportion of vulnerabilities that are scored at or less: ~ 98 % EPSS Score History EPSS FAQ
CVSS scores for CVE-2012-5671
Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source |
---|---|---|---|---|---|
6.8
|
MEDIUM | AV:N/AC:M/Au:N/C:P/I:P/A:P |
8.6
|
6.4
|
NIST |
CWE ids for CVE-2012-5671
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The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer.Assigned by: nvd@nist.gov (Primary)
References for CVE-2012-5671
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https://exchange.xforce.ibmcloud.com/vulnerabilities/79615
Exim dkim_exim_query_dns_txt() buffer overflow CVE-2012-5671 Vulnerability Report
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http://lists.fedoraproject.org/pipermail/package-announce/2012-October/090963.html
[SECURITY] Fedora 16 Update: exim-4.76-4.fc16.2
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http://lists.fedoraproject.org/pipermail/package-announce/2012-October/090900.html
[SECURITY] Fedora 17 Update: exim-4.76-9.fc17
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http://lists.fedoraproject.org/pipermail/package-announce/2012-November/091664.html
[SECURITY] Fedora 18 Update: exim-4.80.1-1.fc18
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http://www.securityfocus.com/bid/56285
Exim DKIM DNS Decoding CVE-2012-5671 Remote Buffer Overflow Vulnerability
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http://www.ubuntu.com/usn/USN-1618-1
USN-1618-1: Exim vulnerability | Ubuntu security notices
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http://lists.opensuse.org/opensuse-security-announce/2012-10/msg00018.html
[security-announce] openSUSE-SU-2012:1404-1: critical: exim: overflow in
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http://www.openwall.com/lists/oss-security/2012/10/26/5
oss-security - CVE-2012-5671: Exim <= 4.80 DKIM heap-based buffer overflow
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http://www.debian.org/security/2012/dsa-2566
Debian -- Security Information -- DSA-2566-1 exim4
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https://lists.exim.org/lurker/message/20121026.080330.74b9147b.en.html
[exim-announce] Exim 4.80.1 Security Release
Products affected by CVE-2012-5671
- cpe:2.3:a:exim:exim:4.70:*:*:*:*:*:*:*
- cpe:2.3:a:exim:exim:4.71:*:*:*:*:*:*:*
- cpe:2.3:a:exim:exim:4.74:*:*:*:*:*:*:*
- cpe:2.3:a:exim:exim:4.75:*:*:*:*:*:*:*
- cpe:2.3:a:exim:exim:4.72:*:*:*:*:*:*:*
- cpe:2.3:a:exim:exim:4.73:*:*:*:*:*:*:*
- cpe:2.3:a:exim:exim:4.76:*:*:*:*:*:*:*
- cpe:2.3:a:exim:exim:4.77:*:*:*:*:*:*:*
- cpe:2.3:a:exim:exim:4.80:*:*:*:*:*:*:*