Vulnerability in Fedoraproject Fedora
CVE-2020-25660
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.
EPSS: 0.010 (62.1th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Fedoraproject Fedora — versions 33
- Redhat Ceph
- Redhat Ceph_storage — versions 2.0, 4.0
- Redhat Openshift_container_platform — versions 4.0
- N/a Ceph — versions All ceph versions before 15.2.6 and before 14.2.14
Weakness classification (CWE)
References
- secalert@redhat.com (Third Party Advisory, x_refsource_MISC, Issue Tracking)
- secalert@redhat.com (x_refsource_MISC, Release Notes, Vendor Advisory)
- secalert@redhat.com (x_refsource_MISC, Release Notes, Vendor Advisory)
- secalert@redhat.com (x_refsource_FEDORA, vendor-advisory)
- secalert@redhat.com (vendor-advisory, Third Party Advisory, x_refsource_GENTOO)
Frequently asked questions
- What is CVE-2020-25660?
- CVE-2020-25660 is a high-severity vulnerability in Fedoraproject Fedora, classified under Authentication Bypass by Capture-replay. CVSS score: 8.8/10. Published 2020-11-23.
- How severe is CVE-2020-25660?
- High severity. CVSS v3 base score is 8.8 out of 10.