CVE-2020-21674

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.

Red Hat Product Security has set the Severity of this flaw to Low for libarchive as shipped with Red Hat Enterprise Linux 8 because we could not reproduce the issue and it states "NOTE: this only affects users who downloaded the development code from GitHub. Users of the product's official releases are unaffected."

This flaw is out of support scope for libarchive as shipped with Red Hat Enterprise Linux 6 and 7.

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.