| Name | CVE-2021-20314 |
| Description | 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. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| References | DLA-2739-1, DSA-4955-1 |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| libspf2 (PTS) | bullseye (security), bullseye | 1.2.10-7.1~deb11u1 | fixed |
| bookworm | 1.2.10-7.2 | fixed |
| sid, trixie | 1.2.10-8.2 | fixed |
The information below is based on the following data on fixed versions.
Notes
https://github.com/shevek/libspf2/commit/c37b7c13c30e225183899364b9f2efdfa85552ef
https://www.openwall.com/lists/oss-security/2021/08/11/6