CVE-2016-2167
Description
The canonicalize_username function in svnserve/cyrus_auth.c in Apache Subversion before 1.8.16 and 1.9.x before 1.9.4, when Cyrus SASL authentication is used, allows remote attackers to authenticate and bypass intended access restrictions via a realm string that is a prefix of an expected repository realm string.
Predictions
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
No mitigations published for this CVE yet.
The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.
✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here withsource_tier=community-verified.
OS impact
SUSE Affected 1 release
| Version | Status | Fixed in |
|---|---|---|
| — | Affected | — |
Debian Fixed 5 releases
| Version | Status | Fixed in |
|---|---|---|
| trixie | Fixed | 1.9.4-1 |
| sid | Fixed | 1.9.4-1 |
| forky | Fixed | 1.9.4-1 |
| bullseye | Fixed | 1.9.4-1 |
| bookworm | Fixed | 1.9.4-1 |
Application impact
| Vendor | Product | Versions | Fixed |
|---|---|---|---|
| apache | subversion | {"endIncluding":"1.8.15"} | |
| apache | subversion | 1.9.0 | |
| apache | subversion | 1.9.1 | |
| apache | subversion | 1.9.2 | |
| apache | subversion | 1.9.3 | |
References
- https://www.suse.com/security/cve/CVE-2016-2167.html
- http://lists.fedoraproject.org/pipermail/package-announce/2016-May/184545.html
- http://lists.opensuse.org/opensuse-updates/2016-05/msg00043.html
- http://lists.opensuse.org/opensuse-updates/2016-05/msg00044.html
- http://mail-archives.apache.org/mod_mbox/subversion-announce/201604.mbox/%3CCAP_GPNgJet+7_MAhomFVOXPgLtewcUw9w=k9zdPCkq5tvPxVMA%40mail.gmail.com%3E
- http://mail-archives.apache.org/mod_mbox/subversion-announce/201604.mbox/%3CCAP_GPNgfn1iKueW51EpmXzXi_URNfGNofZSgOyW1_jnSeNm5DQ%40mail.gmail.com%3E
- http://subversion.apache.org/security/CVE-2016-2167-advisory.txt
- http://www.debian.org/security/2016/dsa-3561
- http://www.securityfocus.com/bid/89417
- http://www.securitytracker.com/id/1035706
- http://www.slackware.com/security/viewer.php?l=slackware-security&y=2016&m=slackware-security.417496
- https://security.gentoo.org/glsa/201610-05
- https://www.oracle.com/security-alerts/cpuoct2020.html
- https://security-tracker.debian.org/tracker/CVE-2016-2167
CWEs
CWE-284
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.