A memory corruption vulnerability is present in bspatch as shipped in Colin Percival’s bsdiff tools version 4.3. Insufficient checks when handling external inputs allows an attacker to bypass the sanity checks in place and write out of a dynamically allocated buffer boundaries. References: https://www.openwall.com/lists/oss-security/2020/07/09/2
Created bsdiff tracking bugs for this issue: Affects: epel-6 [bug 1856749] Affects: fedora-all [bug 1856748]
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.
External References: https://www.openwall.com/lists/oss-security/2020/07/09/2 https://www.x41-dsec.de/lab/advisories/x41-2020-006-bspatch/