libspf2 prior to 1.2.11 has a four-byte heap-based buffer overflow that might allow remote malicious users to execute arbitrary code (via an unauthenticated e-mail message from anywhere on the Internet) with a crafted SPF DNS record, because of incorrect sprintf usage in SPF_record_expand_data in spf_expand.c. The vulnerable code may be part of the supply chain of a site's e-mail infrastructure (e.g., with additional configuration, Exim can use libspf2; the Postfix web site links to unofficial patches for use of libspf2 with Postfix; older versions of spfquery relied on libspf2) but most often is not.
| Vulnerable Product | Search on Vulmon | Subscribe to Product |
|---|---|---|
libspf2 project libspf2 |
||
debian debian linux 9.0 |
Vulmon