CVEvulnerability

CVE-2012-5671

6.8 MEDIUM Published 2012-10-31 Modified 2026-06-16 Official page ↗
Status
Modified
Published
2012-10-31
Last modified
2026-06-16
Assigner
[email protected]
CVSS 2.0 ([email protected])
6.8 MEDIUM — AV:N/AC:M/Au:N/C:P/I:P/A:P
Weaknesses
CWE-119

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.

Affected configurations

• exim exim 4.70 • exim exim 4.71 • exim exim 4.72 • exim exim 4.73 • exim exim 4.74 • exim exim 4.75 • exim exim 4.76 • exim exim 4.77 • exim exim 4.80

Related

Weakness · CWE (1)

  • CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer weakness

References