CVE-2021-33913 Detail
This vulnerability is currently awaiting analysis.
Description
libspf2 before 1.2.11 has a 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 SPF_record_expand_data in spf_expand.c. The amount of overflowed data depends on the relationship between the length of an entire domain name and the length of its leftmost label. 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.
Severity
References to Advisories, Solutions, and Tools
By selecting these links, you will be leaving NIST webspace. We have provided these links to other web sites because they may have information that would be of interest to you. No inferences should be drawn on account of other sites being referenced, or not, from this page. There may be other web sites that are more appropriate for your purpose. NIST does not necessarily endorse the views expressed, or concur with the facts presented on these sites. Further, NIST does not endorse any commercial products that may be mentioned on these sites. Please address comments about this page to [email protected].
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|
Change History
1 change records found show changes
CVE Modified by MITRE 1/20/2022 10:15:07 PM
| Action | Type | Old Value | New Value |
|---|---|---|---|
| Added | Reference |
https://lists.debian.org/debian-lts-announce/2022/01/msg00015.html [No Types Assigned] |
Quick Info
CVE Dictionary Entry:
CVE-2021-33913
NVD Published Date:
01/19/2022
NVD Last Modified:
01/20/2022
Source:
MITRE