Vulnerability Description
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.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Exim | Exim | 4.70 |
Related Weaknesses (CWE)
References
- http://lists.fedoraproject.org/pipermail/package-announce/2012-November/091664.h
- http://lists.fedoraproject.org/pipermail/package-announce/2012-October/090900.ht
- http://lists.fedoraproject.org/pipermail/package-announce/2012-October/090963.ht
- http://lists.opensuse.org/opensuse-security-announce/2012-10/msg00018.html
- http://osvdb.org/86616
- http://secunia.com/advisories/51098Vendor Advisory
- http://secunia.com/advisories/51115
- http://secunia.com/advisories/51153
- http://secunia.com/advisories/51155
- http://www.debian.org/security/2012/dsa-2566
- http://www.openwall.com/lists/oss-security/2012/10/26/5
- http://www.securityfocus.com/bid/56285
- http://www.ubuntu.com/usn/USN-1618-1
- https://exchange.xforce.ibmcloud.com/vulnerabilities/79615
- https://lists.exim.org/lurker/message/20121026.080330.74b9147b.en.html
FAQ
What is CVE-2012-5671?
CVE-2012-5671 is a vulnerability with a CVSS score of 6.8 (MEDIUM). 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...
How severe is CVE-2012-5671?
CVE-2012-5671 has been rated MEDIUM with a CVSS base score of 6.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2012-5671?
Check the references section above for vendor advisories and patch information. Affected products include: Exim Exim.