CVSS: 9.8EPSS: 1%CPEs: 2EXPL: 1CVE-2021-33912 – Ubuntu Security Notice USN-6584-2
https://notcve.org/view.php?id=CVE-2021-33912
19 Jan 2022 — 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 li... • https://github.com/shevek/libspf2/tree/8131fe140704eaae695e76b5cd09e39bd1dd220b • CWE-787: Out-of-bounds Write •
CVSS: 9.8EPSS: 1%CPEs: 1EXPL: 1CVE-2021-33913 – Gentoo Linux Security Advisory 202401-22
https://notcve.org/view.php?id=CVE-2021-33913
19 Jan 2022 — 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 additio... • https://github.com/shevek/libspf2/tree/8131fe140704eaae695e76b5cd09e39bd1dd220b • CWE-787: Out-of-bounds Write •
CVSS: 9.8EPSS: 0%CPEs: 5EXPL: 0CVE-2021-20314 – Ubuntu Security Notice USN-6584-2
https://notcve.org/view.php?id=CVE-2021-20314
12 Aug 2021 — Stack buffer overflow in libspf2 versions below 1.2.11 when processing certain SPF macros can lead to Denial of service and potentially code execution via malicious crafted SPF explanation messages. Un desbordamiento del búfer de la pila en libspf2 versiones por debajo a 1.2.11, cuando se procesan determinadas macros SPF puede conllevar a una Denegación de servicio y, potencialmente, una ejecución de código por medio de mensajes de explicación SPF diseñados de forma maliciosa Philipp Jeitner and Haya Shulma... • https://bugzilla.redhat.com/show_bug.cgi?id=1993070 • CWE-787: Out-of-bounds Write •