CVE-2024-5642 | 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).
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).
- 🔗 jbp.io/2024/06/27/cve-2024-5535-openssl-memory-s…
- 🔗 github.com/python/cpython/pull/23014
- 🔗 mail.python.org/archives/list/[email protected]…
- 🔗 github.com/python/cpython/commit/39258d3595300bc7b95…
- 🔗 www.openwall.com/lists/oss-security/2024/06/28/4
- 🔗 github.com/python/cpython/issues/121227
- 🔗 security.netapp.com/advisory/ntap-20240726-0005/
- 🔗 github.com/python/cpython/commit/a2cdbb6e8188ba9ba8b…
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CVE-2024-5642 | 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).
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 fo