Description
CPython 3.9 and earlier doesn't disallow configuring an empty list ("[]") for SSLContext.set_npn_protocols() which is an invalid value for the underlying OpenSSL API. This results in a buffer over-read when NPN is used (see CVE-2024-5535 for OpenSSL). This vulnerability is of low severity due to NPN being not widely used and specifying an empty list likely being uncommon in-practice (typically a protocol name would be configured).
Mitigation
Minimal update. May introduce new vulnerabilities or breaking changes.
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 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 || =7.3.5+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 | | | 7.3.10+dfsg-1 |
debian 13 | | | 7.3.10+dfsg-1 |
debian 14 | | | 7.3.10+dfsg-1 |
debian 11 | | =2.7.18-10 || =2.7.18-11 || =2.7.18-12 || =2.7.18-13 || =2.7.18-13.1 || =2.7.18-13.1~exp1 || =2.7.18-13.2 || =2.7.18-8 || =2.7.18-8+deb11u1 || =2.7.18-9 | - |
debian 11 | | =3.9.10-1 || =3.9.10-2 || =3.9.11-1 || =3.9.12-1 || =3.9.13-1 || =3.9.2-1 || =3.9.2-1+deb11u1 || =3.9.2-1+deb11u2 || =3.9.2-1+deb11u3 || =3.9.2-1+deb11u4 || =3.9.2-1+deb11u5 || =3.9.2-1+deb11u6 || =3.9.3-1 || =3.9.3-2 || =3.9.4-1 || =3.9.5-1 || =3.9.5-2 || =3.9.5-3 || =3.9.6-1 || =3.9.7-1 || =3.9.7-2 || =3.9.7-4 || =3.9.8-1 || =3.9.8-2 || =3.9.9-1 || =3.9.9-2 || =3.9.9-3 || =3.9.9-4 | - |
 rpm rhel8 | | <0:3.9.25-2.module+el8.10.0+23718+1842ae33 | 0:3.9.25-2.module+el8.10.0+23718+1842ae33 |
rpm rhel8 | | - | - |
rpm rhel7 | | - | - |
rpm rhel8 | | <0:3.9.25-2.module+el8.10.0+23718+1842ae33 | 0:3.9.25-2.module+el8.10.0+23718+1842ae33 |
