Heap-based buffer overflow in archive_string_append_from_wcs() (archive_string.c) in libarchive-3.4.1dev allows remote attackers to cause a denial of service (out-of-bounds write in heap memory resulting into a crash) via a crafted archive file. NOTE: this only affects users who downloaded the development code from GitHub. Users of the product’s official releases are unaffected.
Source: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-21674
Reference (s):
- https://github.com/libarchive/libarchive/commit/4f085eea879e2be745f4d9bf57e8513ae48157f4
- https://github.com/libarchive/libarchive/issues/1298