Versions mentioned in the description apply to the upstream
Remediation section below for
Debian:9 relevant versions.
Integer overflow in the read_string function in libsvn_ra_svn/marshal.c in Apache Subversion 1.9.x before 1.9.3 allows remote attackers to execute arbitrary code via an svn:// protocol string, which triggers a heap-based buffer overflow and an out-of-bounds read.
subversion to version 1.9.3-1 or higher.