CVE-2021-33913
Summary
| CVE | CVE-2021-33913 |
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| State | PUBLIC |
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| Assigner | [email protected] |
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| Source Priority | CVE Program / NVD first with legacy fallback |
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| Published | 2022-01-19 18:15:00 UTC |
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| Updated | 2024-01-15 17:15:00 UTC |
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| 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. |
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NVD Known Affected Configurations (CPE 2.3)
References
| Reference | Source | Link | Tags |
|---|
| CVE-2021-33912 and CVE-2021-33913: Heap overflows in email validation library LibSPF2 | Nathaniel Bennett |
MISC |
nathanielbennett.com |
|
| GitHub - shevek/libspf2 at 8131fe140704eaae695e76b5cd09e39bd1dd220b |
MISC |
github.com |
|
| libspf2: Multiple vulnerabilities (GLSA 202401-22) — Gentoo security |
|
security.gentoo.org |
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| [SECURITY] [DLA 2890-1] libspf2 security update |
MLIST |
lists.debian.org |
|
| CVE Program record |
CVE.ORG |
www.cve.org |
canonical |
| NVD vulnerability detail |
NVD |
nvd.nist.gov |
canonical, analysis |
No vendor comments have been submitted for this CVE.
Legacy QID Mappings
- 179014 Debian Security Update for libspf2 (DLA 2890-1)
- 179714 Debian Security Update for libspf2 (CVE-2021-33913)
- 200049 Ubuntu Security Notification for Libspf2 Vulnerabilities (USN-6584-1)
- 200128 Ubuntu Security Notification for Libspf2 Vulnerabilities (USN-6584-2)
- 502222 Alpine Linux Security Update for libspf2
- 503678 Alpine Linux Security Update for libspf2
- 505886 Alpine Linux Security Update for libspf2
- 710839 Gentoo Linux libspf2 Multiple Vulnerabilities (GLSA 202401-22)
