| 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, ELA-477-1 |
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| libspf2 (PTS) | jessie, jessie (lts) | 1.2.10-5+deb8u2 | fixed |
| stretch (security), stretch (lts), stretch | 1.2.10-7+deb9u2 | fixed | |
| buster (security), buster, buster (lts) | 1.2.10-7.1~deb10u1 | fixed | |
| 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.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| libspf2 | source | jessie | 1.2.10-5+deb8u1 | ELA-477-1 | ||
| libspf2 | source | stretch | 1.2.10-7+deb9u1 | DLA-2739-1 | ||
| libspf2 | source | buster | 1.2.10-7.1~deb10u1 | DSA-4955-1 | ||
| libspf2 | source | bullseye | 1.2.10-7.1~deb11u1 | |||
| libspf2 | source | (unstable) | 1.2.10-7.1 |
https://github.com/shevek/libspf2/commit/c37b7c13c30e225183899364b9f2efdfa85552ef
https://www.openwall.com/lists/oss-security/2021/08/11/6