Vulnerability in Red Hat Enterprise Linux
CVE-2020-27836
A flaw was found in cluster-ingress-operator. A change to how the router-default service allows only certain IP source ranges could allow an attacker to access resources that would otherwise be restricted to specified IP ranges. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability..
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.012 (67.4th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 67th percentile — 67.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.012 · newest: 0.012 · change: +0.000
Affected products
- Red Hat Enterprise Linux — versions 8.0
- Red Hat Openshift Container Platform — versions 4.6
- Cluster-Ingress-Operator — versions Fixed in ose-cluster-ingress-operator-container-v4.6.0-202012161211.p0.
Weakness classification (CWE)
Public proof-of-concept exploits
References
- bugzilla.redhat.com/show_bug.cgi (Patch, Issue Tracking, Vendor Advisory)
- bugzilla.redhat.com/show_bug.cgi (Permissions Required, Issue Tracking, Vendor Advisory)
- access.redhat.com/security/cve/CVE-2020-27836 (Vendor Advisory)
- github.com/openshift/cluster-ingress-operator/pull/507/commits/92c83f281ba5fb6a… (Patch, Third Party Advisory)
Frequently asked questions
- What is CVE-2020-27836?
- CVE-2020-27836 is a critical-severity vulnerability in Red Hat Enterprise Linux, classified under Incorrect Permission Assignment for Critical Resource. CVSS score: 9.8/10. Published 2022-08-22.
- How severe is CVE-2020-27836?
- Critical severity. CVSS v3 base score is 9.8 out of 10.
- Is CVE-2020-27836 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.