Based on commit 01a61d7040
by Leo Famulari <leo@famulari.name>.
* gnu/packages/patches/libtasn1-CVE-2017-10790.patch: New file.
* gnu/local.mk (dist_patch_DATA): Add it.
* gnu/packages/tls.scm (libtasn1)[replacement]: New field.
(libtasn1/fixed): New variable.
Mark H Weaver