Buffer Overflow Vulnerabilities in Exim 4.43: Arbitrary Code Execution

CVE-2005-0021 · HIGH Severity

AV:L/AC:L/AU:N/C:C/I:C/A:C

Multiple buffer overflows in Exim before 4.43 may allow attackers to execute arbitrary code via (1) an IPv6 address with more than 8 components, as demonstrated using the -be command line option, which triggers an overflow in the host_aton function, or (2) the -bh command line option or dnsdb PTR lookup, which triggers an overflow in the dns_build_reverse function.

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