Auth bypass in OpenStack Swauth
CVE-2017-16613
An issue was discovered in middleware.py in OpenStack Swauth through 1.2.0 when used with OpenStack Swift through 2.15.1. The Swift object store and proxy server are saving (unhashed) tokens retrieved from the Swauth middleware authentication mechanism to a log file as part of a GET URI. This allows attackers to bypass authentication by inserting a token into an X-Auth-Token header of a new request. NOTE: github.com/openstack/swauth URLs do not mean that Swauth is maintained by an official OpenStack project team.
Vulnerability class: Broken Authentication
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.084 (95.0th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 95th percentile — 95.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.084 · newest: 0.084 · change: 0.000
Affected products
- OpenStack Swauth
- OpenStack Swift
- Debian Linux — versions 9.0
Weakness classification (CWE)
References
- www.securityfocus.com/bid/101926 (VDB Entry, Third Party Advisory, vdb-entry)
- bugs.debian.org/cgi-bin/bugreport.cgi (Patch, Third Party Advisory, Issue Tracking)
- www.debian.org/security/2017/dsa-4044 (vendor-advisory, Third Party Advisory, Issue Tracking)
- bugs.launchpad.net/swift/+bug/1655781 (Patch, Third Party Advisory, Issue Tracking)
- github.com/openstack/swauth/commit/70af7986265a3defea054c46efc82d0698917298 (Patch, Third Party Advisory, Issue Tracking)
Frequently asked questions
- What is CVE-2017-16613?
- CVE-2017-16613 is a critical-severity vulnerability in OpenStack Swauth, classified under Improper Authentication. CVSS score: 9.8/10. Published 2017-11-21.
- How severe is CVE-2017-16613?
- Critical severity. CVSS v3 base score is 9.8 out of 10.