Description
A flaw was found in the email module in the Python standard library. When serializing an email message, the BytesGenerator class fails to properly quote newline characters for email headers. This issue is exploitable when the LiteralHeader class is used as it does not respect email folding rules, allowing an attacker to inject email headers and potentially modify message recipients or the email body, and spoof sender information.
Mitigation
Minimal update. May introduce new vulnerabilities or breaking changes.
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 debian 13 | | =3.13.5-2 || >=0 <3.13.5-2+deb13u1 | 3.13.5-2+deb13u1 |
debian 11 | | =3.9.2-1 || =3.9.2-1+deb11u1 || =3.9.2-1+deb11u2 || =3.9.2-1+deb11u3 || =3.9.2-1+deb11u4 || >=0 <3.9.2-1+deb11u5 | 3.9.2-1+deb11u5 |
debian 14 | | =7.3.19+dfsg-2 || =7.3.20+dfsg-1 || =7.3.20+dfsg-2 || =7.3.20+dfsg-3 || =7.3.20+dfsg-4 || >=0 <7.3.21+dfsg-1 | 7.3.21+dfsg-1 |
debian 11 | | =7.3.10+dfsg-1 || =7.3.10~rc3+dfsg-1 || =7.3.10~rc3+dfsg-2 || =7.3.11+dfsg-1 || =7.3.11+dfsg-2 || =7.3.12+dfsg-1 || =7.3.12~rc1+dfsg-1 || =7.3.12~rc2+dfsg-1 || =7.3.13+dfsg-1 || =7.3.14+dfsg-1 || =7.3.15+dfsg-1 || =7.3.16+dfsg-1 || =7.3.16+dfsg-2 || =7.3.17+dfsg-1 || =7.3.17+dfsg-2 || =7.3.17+dfsg-3 || =7.3.18+dfsg-1 || =7.3.18+dfsg-2 || =7.3.19+dfsg-1 || =7.3.19+dfsg-2 || =7.3.20+dfsg-1 || =7.3.20+dfsg-2 || =7.3.20+dfsg-3 || =7.3.20+dfsg-4 || =7.3.21+dfsg-1 || =7.3.21+dfsg-2 || =7.3.21+dfsg-3 || =7.3.21+dfsg-4 || =7.3.22+dfsg-1 || =7.3.5+dfsg-2 || =7.3.5+dfsg-2+deb11u1 || =7.3.5+dfsg-2+deb11u2 || =7.3.5+dfsg-2+deb11u3 || =7.3.5+dfsg-2+deb11u4 || =7.3.5+dfsg-2+deb11u5 || =7.3.6+dfsg-1 || =7.3.6~rc2+dfsg-1 || =7.3.6~rc2+dfsg-2 || =7.3.7+dfsg-1 || =7.3.7+dfsg-2 || =7.3.7+dfsg-3 || =7.3.7+dfsg-4 || =7.3.7+dfsg-5 || =7.3.8+dfsg-1 || =7.3.8+dfsg-2 || =7.3.8~rc1+dfsg-1 || =7.3.8~rc1+dfsg-2 || =7.3.9+dfsg-1 || =7.3.9+dfsg-2 || =7.3.9+dfsg-3 || =7.3.9+dfsg-4 || =7.3.9+dfsg-5 | - |
debian 12 | | =3.11.2-6 || =3.11.2-6+deb12u1 || =3.11.2-6+deb12u2 || =3.11.2-6+deb12u3 || =3.11.2-6+deb12u4 || =3.11.2-6+deb12u5 || =3.11.2-6+deb12u6 || >=0 <3.11.2-6+deb12u7 | 3.11.2-6+deb12u7 |
debian 14 | | =3.13.11-1 || =3.13.5-2 || =3.13.6-1 || =3.13.7-1 || =3.13.8-1 || =3.13.9-1 || >=0 <3.13.12-1 | 3.13.12-1 |
debian 12 | | =7.3.11+dfsg-2 || =7.3.11+dfsg-2+deb12u1 || =7.3.11+dfsg-2+deb12u2 || =7.3.11+dfsg-2+deb12u3 || =7.3.12+dfsg-1 || =7.3.12~rc1+dfsg-1 || =7.3.12~rc2+dfsg-1 || =7.3.13+dfsg-1 || =7.3.14+dfsg-1 || =7.3.15+dfsg-1 || =7.3.16+dfsg-1 || =7.3.16+dfsg-2 || =7.3.17+dfsg-1 || =7.3.17+dfsg-2 || =7.3.17+dfsg-3 || =7.3.18+dfsg-1 || =7.3.18+dfsg-2 || =7.3.19+dfsg-1 || =7.3.19+dfsg-2 || =7.3.20+dfsg-1 || =7.3.20+dfsg-2 || =7.3.20+dfsg-3 || =7.3.20+dfsg-4 || =7.3.21+dfsg-1 || =7.3.21+dfsg-2 || =7.3.21+dfsg-3 || =7.3.21+dfsg-4 || =7.3.22+dfsg-1 | - |
debian 14 | | =3.14.0-1 || =3.14.0-2 || =3.14.0-3 || =3.14.0-4 || =3.14.0-5 || =3.14.0~a7-1 || =3.14.0~b1-1 || =3.14.0~b2-1 || =3.14.0~b3-1 || =3.14.0~b4-1 || =3.14.0~rc1-1 || =3.14.0~rc2-1 || =3.14.0~rc3-1 || =3.14.2-1 || >=0 <3.14.3-1 | 3.14.3-1 |
debian 13 | | =7.3.19+dfsg-2 || =7.3.20+dfsg-1 || =7.3.20+dfsg-2 || =7.3.20+dfsg-3 || =7.3.20+dfsg-4 || =7.3.21+dfsg-1 || =7.3.21+dfsg-2 || =7.3.21+dfsg-3 || =7.3.21+dfsg-4 || =7.3.22+dfsg-1 | - |
 rpm rhel9 | | | 0:3.11.13-5.1.el9_7 |
