Buffer overflow in Exim
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 class: Buffer Overflow
EPSS: 0.084 (94.4th percentile) — read the EPSS interpretation.
Affected products
- Exim — versions 4.70, 4.71, 4.72
- N/a — versions n/a
Weakness classification (CWE)
Public proof-of-concept exploits
References
- cve@mitre.org (x_refsource_SECUNIA, third-party-advisory)
- cve@mitre.org (mailing-list, x_refsource_MLIST)
- cve@mitre.org (x_refsource_SECUNIA, third-party-advisory)
- cve@mitre.org (mailing-list, x_refsource_MLIST)
- cve@mitre.org (x_refsource_UBUNTU, vendor-advisory)
- cve@mitre.org (x_refsource_SECUNIA, Vendor Advisory, third-party-advisory)
- cve@mitre.org (vendor-advisory, x_refsource_FEDORA)
- cve@mitre.org (vendor-advisory, x_refsource_FEDORA)
- cve@mitre.org (x_refsource_SECUNIA, third-party-advisory)
- cve@mitre.org (x_refsource_OSVDB, vdb-entry)
Frequently asked questions
- What is CVE-2012-5671?
- CVE-2012-5671 is a vulnerability in Exim, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. Published 2012-10-31.
- Is CVE-2012-5671 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.