CVE-2021-20314

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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTNIST
9.8 CRITICAL
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
redhatCNA
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CVEADP
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Base Score
CVSS 3.x
EPSS Score
Percentile: 38%
VendorProductVersion
libspf2libspf2
𝑥
< 1.2.11
redhatenterprise_linux
7.0
𝑥
= Vulnerable software versions
Debian logo
Debian Releases
Debian Product
Codename
libspf2
bullseye (security)
1.2.10-7.1~deb11u1
fixed
bullseye
1.2.10-7.1~deb11u1
fixed
bookworm
1.2.10-7.2
fixed
sid
1.2.10-8.2
fixed
trixie
1.2.10-8.2
fixed
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
libspf2
mantic
not-affected
lunar
not-affected
kinetic
ignored
jammy
not-affected
impish
ignored
hirsute
ignored
focal
Fixed 1.2.10-7+deb9u2build0.20.04.1
released
bionic
Fixed 1.2.10-7ubuntu0.18.04.1~esm1
released
xenial
Fixed 1.2.10-6ubuntu0.1~esm1
released
trusty
dne
Common Weakness Enumeration
References
https://bugzilla.redhat.com/show_bug.cgi?id=1993070
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CMSFT2NJDZ7PATRZSQPAOGSE7JD6ELOB/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GFXJRHPE5OSCPTNA3ZZ4ORDHT4JQH3Y4/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/Y6T4HYXXSUQCGJB2ES6X7Q74YYF7V7XU/
https://security.gentoo.org/glsa/202401-22
https://bugzilla.redhat.com/show_bug.cgi?id=1993070
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CMSFT2NJDZ7PATRZSQPAOGSE7JD6ELOB/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GFXJRHPE5OSCPTNA3ZZ4ORDHT4JQH3Y4/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/Y6T4HYXXSUQCGJB2ES6X7Q74YYF7V7XU/
https://security.gentoo.org/glsa/202401-22