It was found that indefinite string encoding is decoded via recursion in _asn1_decode_simple_ber() which can lead to stack exhaustion when processing specially crafted string. Reference: https://lists.gnu.org/archive/html/help-libtasn1/2018-01/msg00000.html
Upstream patch: https://gitlab.com/gnutls/libtasn1/commit/c593ae84cfcde8fea45787e53950e0ac71e9ca97
Created libtasn1 tracking bugs for this issue: Affects: fedora-all [bug 1535926] Created mingw-libtasn1 tracking bugs for this issue: Affects: fedora-all [bug 1535925]
Statement: This issue affects the versions of libtasn1 as shipped with Red Hat Satellite version 6. Red Hat Product Security has rated this issue as having Moderate security impact. A future update may address this issue. For additional information, refer to the Issue Severity Classification: https://access.redhat.com/security/updates/classification/.