CVE-2021-33912
CVSS v3
9.8
CRITICAL
Score EPSS
1.4 %
probabilité d’exploitation
CISA KEV
Non
exploitation connue
Exploitation
—
statut SSVC
Description
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.
Détails techniques
- Publiée le
- 2022-01-19
Questions fréquentes
Qu’est-ce que CVE-2021-33912 ?
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.
CVE-2021-33912 est-elle activement exploitée ?
Aucune exploitation active de CVE-2021-33912 n’est confirmée. Le score EPSS est de 1.4 %, soit la probabilité estimée d’exploitation dans les 30 prochains jours.
Quel est le score CVSS de CVE-2021-33912 ?
CVE-2021-33912 a un score de base CVSS v3 de 9.8 (gravité CRITICAL).
CVE-2021-33912 touche-t-elle votre environnement ?
Utilisez isMalicious pour vérifier si l’une de vos IP ou l’un de vos domaines est associé aux IOC de cette vulnérabilité.
Sans carte bancaire · 500 vérifications gratuites par mois · Clé API gratuite
Autres vulnérabilités 2021 à trier
Classées par probabilité d’exploitation (EPSS).