Candidate: CVE-2020-21674
PublicDate: 2020-10-15 15:15:00 UTC
References:
 https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-21674
 https://github.com/libarchive/libarchive/commit/4f085eea879e2be745f4d9bf57e8513ae48157f4
 https://github.com/libarchive/libarchive/issues/1298
Description:
 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.
Ubuntu-Description:
Notes:
 ebarretto> this only affects users who downloaded the development code.
 ebarretto> Users of the product's official releases are unaffected.
Mitigation:
Bugs:
Priority: medium
Discovered-by:
Assigned-to:
CVSS:
 nvd: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H [6.5 MEDIUM]


Patches_libarchive:
upstream_libarchive: needs-triage
precise/esm_libarchive: DNE
trusty_libarchive: ignored (out of standard support)
trusty/esm_libarchive: not-affected (code not present)
xenial_libarchive: not-affected (code not present)
esm-infra/xenial_libarchive: not-affected (code not present)
bionic_libarchive: not-affected (code not present)
focal_libarchive: not-affected (code not present)
devel_libarchive: not-affected (3.4.1)