libspf2 before 1.2.11 has a four-byte heap-based buffer overflow that might allow remote attackers 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.
Metrics
Affected Vendors & Products
References
History
No history.
MITRE
Status: PUBLISHED
Assigner: mitre
Published: 2022-01-19T00:00:00
Updated: 2024-08-04T00:05:52.118Z
Reserved: 2021-06-07T00:00:00
Link: CVE-2021-33912
Vulnrichment
No data.
NVD
Status : Modified
Published: 2022-01-19T18:15:07.783
Modified: 2024-01-15T17:15:08.160
Link: CVE-2021-33912
Redhat
No data.