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authorMatthew Whitehead <matthew1001@gmail.com>2018-10-15 16:27:28 +0100
committerJay Satiro <raysatiro@yahoo.com>2018-10-16 03:52:47 -0400
commitdf54b14fb77bc7f62f31971ed8bb26ec24bf27d5 (patch)
tree384f152db88c172b6b5f313a15a4f27c67e81688 /projects/Windows/VC14
parent03186b118784e067cccef7d469564d8fbb96725f (diff)
x509asn1: Fix SAN IP address verification
For IP addresses in the subject alternative name field, the length of the IP address (and hence the number of bytes to perform a memcmp on) is incorrectly calculated to be zero. The code previously subtracted q from name.end. where in a successful case q = name.end and therefore addrlen equalled 0. The change modifies the code to subtract name.beg from name.end to calculate the length correctly. The issue only affects libcurl with GSKit SSL, not other SSL backends. The issue is not a security issue as IP verification would always fail. Fixes #3102 Closes #3141
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