CVE-2018-1002105
Description
In all Kubernetes versions prior to v1.10.11, v1.11.5, and v1.12.3, incorrect handling of error responses to proxied upgrade requests in the kube-apiserver allowed specially crafted requests to establish a connection through the Kubernetes API server to backend servers, then send arbitrary requests over the same connection directly to the backend, authenticated with the Kubernetes API server's TLS credentials used to establish the backend connection.
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.
Exploits
Public proof-of-concept code below. AS-IS, for defenders and authorised testing only.
Exploit-DB
Kubernetes - (Authenticated) Arbitrary Requests
Kubernetes - (Unauthenticated) Arbitrary Requests
OS impact
SUSE Affected 1 release
| Version | Status | Fixed in |
|---|---|---|
| — | Affected | — |
Debian Fixed 5 releases
| Version | Status | Fixed in |
|---|---|---|
| trixie | Fixed | 1.17.4-1 |
| sid | Fixed | 1.17.4-1 |
| forky | Fixed | 1.17.4-1 |
| bullseye | Fixed | 1.17.4-1 |
| bookworm | Fixed | 1.17.4-1 |
Package impact
| Ecosystem | Package | Vulnerable | Fixed |
|---|---|---|---|
| Go | github.com/kubernetes/kubernetes | <1.10.11 | 1.10.11 |
| Go | github.com/kubernetes/kubernetes | >=1.11.0,<1.11.5 | 1.11.5 |
| Go | github.com/kubernetes/kubernetes | >=1.12.0,<1.12.3 | 1.12.3 |
References
- https://www.suse.com/security/cve/CVE-2018-1002105.html
- https://nvd.nist.gov/vuln/detail/CVE-2018-1002105
- https://github.com/kubernetes/kubernetes/issues/71411
- https://github.com/kubernetes/kubernetes/commit/2257c1ecbe3c0cf71dd50b82752ae189c94ec905
- https://www.securityfocus.com/bid/106068
- https://www.openwall.com/lists/oss-security/2019/07/06/4
- https://www.openwall.com/lists/oss-security/2019/07/06/3
- https://www.openwall.com/lists/oss-security/2019/06/28/2
- https://www.exploit-db.com/exploits/46053
- https://www.exploit-db.com/exploits/46052
- https://www.coalfire.com/The-Coalfire-Blog/December-2018/Kubernetes-Vulnerability-What-You-Can-Should-Do
- https://security.netapp.com/advisory/ntap-20190416-0001
- https://lists.opensuse.org/opensuse-security-announce/2020-04/msg00041.html
- https://groups.google.com/forum/#!topic/kubernetes-announce/GVllWCg6L88
- https://github.com/evict/poc_CVE-2018-1002105
- https://access.redhat.com/errata/RHSA-2018:3754
- https://access.redhat.com/errata/RHSA-2018:3752
- https://access.redhat.com/errata/RHSA-2018:3742
- https://access.redhat.com/errata/RHSA-2018:3624
- https://access.redhat.com/errata/RHSA-2018:3598
- https://access.redhat.com/errata/RHSA-2018:3551
- https://access.redhat.com/errata/RHSA-2018:3549
- https://access.redhat.com/errata/RHSA-2018:3537
- https://github.com/advisories/GHSA-579h-mv94-g4gp
- https://security-tracker.debian.org/tracker/CVE-2018-1002105
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.