CVE-2016-8688
Published: 15 February 2017
The mtree bidder in libarchive 3.2.1 does not keep track of line sizes when extending the read-ahead, which allows remote attackers to cause a denial of service (crash) via a crafted file, which triggers an invalid read in the (1) detect_form or (2) bid_entry function in libarchive/archive_read_support_format_mtree.c.
Priority
Status
| Package | Release | Status |
|---|---|---|
|
libarchive Launchpad, Ubuntu, Debian |
precise |
Released
(3.0.3-6ubuntu1.4)
|
| trusty |
Released
(3.1.2-7ubuntu2.4)
|
|
| upstream |
Released
(3.2.1-5)
|
|
| xenial |
Released
(3.1.2-11ubuntu0.16.04.3)
|
|
| yakkety |
Released
(3.2.1-2ubuntu0.1)
|
|
|
Patches: upstream: https://github.com/libarchive/libarchive/commit/eec077f52bfa2d3f7103b4b74d52572ba8a15aca |
||
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 5.5 |
| Attack vector | Local |
| Attack complexity | Low |
| Privileges required | None |
| User interaction | Required |
| Scope | Unchanged |
| Confidentiality | None |
| Integrity impact | None |
| Availability impact | High |
| Vector | CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H |
References
- https://blogs.gentoo.org/ago/2016/09/11/libarchive-bsdtar-heap-based-buffer-overflow-in-detect_form-archive_read_support_format_mtree-c/
- https://blogs.gentoo.org/ago/2016/09/11/libarchive-bsdtar-memory-corruptionunknown-crash-in-bid_entry-archive_read_support_format_mtree-c/
- https://blogs.gentoo.org/ago/2016/09/11/libarchive-bsdtar-heap-based-buffer-overflow-in-bid_entry-archive_read_support_format_mtree-c/
- https://blogs.gentoo.org/ago/2016/09/11/libarchive-bsdtar-use-after-free-in-bid_entry-archive_read_support_format_mtree-c/
- https://blogs.gentoo.org/ago/2016/09/11/libarchive-bsdtar-use-after-free-in-detect_form-archive_read_support_format_mtree-c/
- https://ubuntu.com/security/notices/USN-3225-1
- https://www.cve.org/CVERecord?id=CVE-2016-8688
- NVD
- Launchpad
- Debian