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GoogleOSV:GHSA-6748-36QP-FX6RHistoryMay 17, 2022 - 4:56 a.m.
PyOpenSSL Mishandles NUL Byte In Certificate Subject Alternative Name
2022-05-1704:56:46
Google
osv.dev
3
The X509Extension in pyOpenSSL before 0.13.1 does not properly handle a \0 character in a domain name in the Subject Alternative Name field of an X.509 certificate, which allows man-in-the-middle attackers to spoof arbitrary SSL servers via a crafted certificate issued by a legitimate Certification Authority.
References
lists.opensuse.org/opensuse-updates/2013-11/msg00015.html
www.debian.org/security/2013/dsa-2763
www.openwall.com/lists/oss-security/2013/09/06/2
www.ubuntu.com/usn/USN-1965-1
bugzilla.redhat.com/show_bug.cgi?id=1005325
github.com/pyca/pyopenssl
github.com/pyca/pyopenssl/commit/6bbf44a00b35fb28df1f66aa194b2fe95eab1ab2
mail.python.org/pipermail/pyopenssl-users/2013-September/000478.html
nvd.nist.gov/vuln/detail/CVE-2013-4314
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PyOpenSSL Mishandles NUL Byte In Certificate Subject Alternative Name
2022-05-17 04:56:46