Auth bypass in Nic Bird
CVE-2021-26928
BIRD through 2.0.7 does not provide functionality for password authentication of BGP peers. Because of this, products that use BIRD (which may, for example, include Tigera products in some configurations, as well as products of other vendors) may have been susceptible to route redirection for Denial of Service and/or Information Disclosure. NOTE: a researcher has asserted that the behavior is within Tigera’s area of responsibility; however, Tigera disagrees
Vulnerability class: Broken Authentication
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.8 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:H.
EPSS exploit prediction
EPSS: 0.010 (61.6th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 62nd percentile — 61.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.010 · newest: 0.010 · change: 0.000
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- www.cyberark.com/resources/threat-research-blog/attacking-kubernetes-clusters-t… (Exploit, Third Party Advisory, Mitigation)
Frequently asked questions
- What is CVE-2021-26928?
- CVE-2021-26928 is a medium-severity vulnerability in Nic Bird, classified under Missing Authentication for Critical Function. CVSS score: 6.8/10. Published 2021-06-04.
- How severe is CVE-2021-26928?
- Medium severity. CVSS v3 base score is 6.8 out of 10.
- Is CVE-2021-26928 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.