phpseclib before 2.0.31 and 3.x before 3.0.7 mishandles RSA PKCS#1 v1.5 signature verification.
Reference and upstream patch:
Created php-phpseclib tracking bugs for this issue:
Affects: epel-7 [bug 1946738]
Affects: fedora-all [bug 1946737]
This CVE Bugzilla entry is for community support informational purposes only as it does not affect a package in a commercially supported Red Hat product. Refer to the dependent bugs for status of those individual community products.