CVE-2017-14064
Description
Ruby through 2.2.7, 2.3.x through 2.3.4, and 2.4.x through 2.4.1 can expose arbitrary memory during a JSON.generate call. The issues lies in using strdup in ext/json/ext/generator/generator.c, which will stop after encountering a '\0' byte, returning a pointer to a string of length zero, which is not the length stored in space_len.
Predictions
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
Vendor advisory: suse — https://www.suse.com/security/cve/CVE-2017-14064.html
Vendor advisory: cve@mitre.org — https://www.ruby-lang.org/en/news/2017/09/14/ruby-2-3-5-released/
Vendor advisory: cve@mitre.org — https://www.ruby-lang.org/en/news/2017/09/14/ruby-2-2-8-released/
Vendor advisory: cve@mitre.org — https://github.com/flori/json/commit/8f782fd8e181d9cfe9387ded43a5ca9692266b85
Vendor advisory: cve@mitre.org — https://bugs.ruby-lang.org/issues/13853
OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| sles | affected | | |
| debian | 8.0 | affected | |
| debian | 9.0 | affected | |
| rhel | 7.0 | affected | |
| ubuntu | 14.04 | affected | |
| ubuntu | 16.04 | affected | |
| ubuntu | 17.10 | affected | |
References
- http://www.securityfocus.com/bid/100890
- http://www.securitytracker.com/id/1039363
- http://www.securitytracker.com/id/1042004
- https://access.redhat.com/errata/RHSA-2017:3485
- https://access.redhat.com/errata/RHSA-2018:0378
- https://access.redhat.com/errata/RHSA-2018:0583
- https://access.redhat.com/errata/RHSA-2018:0585
- https://bugs.ruby-lang.org/issues/13853
- https://github.com/flori/json/commit/8f782fd8e181d9cfe9387ded43a5ca9692266b85
- https://hackerone.com/reports/209949
- https://lists.debian.org/debian-lts-announce/2018/07/msg00012.html
- https://security.gentoo.org/glsa/201710-18
- https://usn.ubuntu.com/3685-1/
- https://www.debian.org/security/2017/dsa-3966
- https://www.ruby-lang.org/en/news/2017/09/14/ruby-2-2-8-released/
- https://www.ruby-lang.org/en/news/2017/09/14/ruby-2-3-5-released/
- https://www.suse.com/security/cve/CVE-2017-14064.html
CWEs
CWE-119
Verify integrity in audit chain (admin only). AS-IS.