CVE-2020-25660
First published: Thu Oct 22 2020(Updated: )
A flaw was found in the Cephx authentication protocol in versions before 15.2.6 and before 14.2.14, where it does not verify Ceph clients correctly and is then vulnerable to replay attacks in Nautilus. This flaw allows an attacker with access to the Ceph cluster network to authenticate with the Ceph service via a packet sniffer and perform actions allowed by the Ceph service. This issue is a reintroduction of CVE-2018-1128, affecting the msgr2 protocol. The msgr 2 protocol is used for all communication except older clients that do not support the msgr2 protocol. The msgr1 protocol is not affected. The highest threat from this vulnerability is to confidentiality, integrity, and system availability.
Credit: secalert@redhat.com secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| redhat/ceph | <2:14.2.8-115.el7c | 2:14.2.8-115.el7c |
| redhat/ceph | <2:14.2.11-95.el7c | 2:14.2.11-95.el7c |
| redhat/ceph | <15.2.6 | 15.2.6 |
| redhat/ceph | <14.2.14 | 14.2.14 |
| ubuntu/ceph | <15.2.7-0ubuntu0.20.04.2 | 15.2.7-0ubuntu0.20.04.2 |
| ubuntu/ceph | <15.2.7-0ubuntu0.20.10.3 | 15.2.7-0ubuntu0.20.10.3 |
| ubuntu/ceph | <15.2.6 | 15.2.6 |
| Redhat Ceph | <14.2.14 | |
| Redhat Ceph | >=15.0.0<15.2.6 | |
| Redhat Ceph Storage | =2.0 | |
| Redhat Ceph Storage | =4.0 | |
| Redhat Openshift Container Platform | =4.0 | |
| Fedoraproject Fedora | =33 | |
| debian/ceph | 12.2.11+dfsg1-2.1 12.2.11+dfsg1-2.1+deb10u1 14.2.21-1 16.2.11+ds-2 18.2.1+ds-9 |
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Reference Links
- https://www.cve.org/CVERecord?id=CVE-2020-25660 https://nvd.nist.gov/vuln/detail/CVE-2020-25660 https://ceph.io/community/v15-2-6-octopus-released/ https://ceph.io/releases/v14-2-14-nautilus-released/
- https://bugzilla.redhat.com/show_bug.cgi?id=1890354
- https://access.redhat.com/errata/RHSA-2020:5325
- https://access.redhat.com/errata/RHSA-2021:0081
- https://access.redhat.com/errata/RHBA-2021:0305
- https://access.redhat.com/security/cve/cve-2020-25660
- https://ceph.io/community/v15-2-6-octopus-released/
- https://ceph.io/releases/v14-2-14-nautilus-released/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/UBC4KZ44QUQENTYZPVHORGL4K2KV5V4F/
- https://security.gentoo.org/glsa/202105-39
- https://launchpad.net/bugs/cve/CVE-2020-25660
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UBC4KZ44QUQENTYZPVHORGL4K2KV5V4F/
- https://github.com/ceph/ceph/pull/30524
- https://github.com/ceph/ceph/pull/30523
- https://access.redhat.com/security/cve/CVE-2018-1128
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1898551
- https://github.com/ceph/ceph/commit/6c14c2fb5650426285428dfe6ca1597e5ea1d07d
- https://github.com/ceph/ceph/commit/1316c82aae8c51b3fe10d8a8f0a87b60db54ee16
- https://github.com/ceph/ceph/commit/bafdfec8f974f1a3f7d404bcfd0a4cfad784937d
- https://github.com/ceph/ceph/commit/2927fd91d41e505237cc73f9700e5c6a63e5cb4f
- https://github.com/ceph/ceph/commit/4c11203122d729c832a645c9e3f5092db4963840
- https://github.com/ceph/ceph/commit/bb5d3d58bfcae96d2e5f796eaa74fc0987f79e77
- https://www.openwall.com/lists/oss-security/2020/11/17/4
- https://www.openwall.com/lists/oss-security/2020/11/17/3
- https://github.com/ceph/ceph/commit/321548010578d6ff7bbf2e5ce8a550008b131423
- https://security-tracker.debian.org/tracker/CVE-2020-25660
- https://ubuntu.com/security/notices/USN-4706-1
- https://www.cve.org/CVERecord?id=CVE-2020-25660
- https://nvd.nist.gov/vuln/detail/CVE-2020-25660
- https://github.com/ceph/ceph/commit/4a82c72e3bdddcb625933e83af8b50a444b961f1
- https://ubuntu.com/security/CVE-2020-25660
Parent vulnerabilities
(Appears in the following advisories)
Frequently Asked Questions
What is CVE-2020-25660?
CVE-2020-25660 is a vulnerability in the Cephx authentication protocol that allows replay attacks in versions before 15.2.6 and before 14.2.14.
What is the severity of CVE-2020-25660?
CVE-2020-25660 has a severity rating of 8.8 (high).
How does CVE-2020-25660 affect Ceph?
CVE-2020-25660 affects Ceph versions before 15.2.6 and before 14.2.14, making them vulnerable to replay attacks.
How can I fix CVE-2020-25660?
To fix CVE-2020-25660, you should update Ceph to version 15.2.6 or 14.2.14.
Are there any references for CVE-2020-25660?
Yes, you can find references for CVE-2020-25660 at the following links: [GitHub Pull Request 1](https://github.com/ceph/ceph/pull/30524), [GitHub Pull Request 2](https://github.com/ceph/ceph/pull/30523), [Red Hat Security Advisory](https://access.redhat.com/security/cve/CVE-2018-1128).
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