Vulnerability in OpenBSD
CVE-2020-26142
An issue was discovered in the kernel in OpenBSD 6.6. The WEP, WPA, WPA2, and WPA3 implementations treat fragmented frames as full frames. An adversary can abuse this to inject arbitrary network packets, independent of the network configuration.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:N.
EPSS exploit prediction
EPSS: 0.021 (80.7th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 81st percentile — 80.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.021 · newest: 0.021 · change: 0.000
Affected products
- OpenBSD — versions 6.6
Weakness classification (CWE)
Public proof-of-concept exploits
References
- tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-wifi-faf… (vendor-advisory, Third Party Advisory)
- www.fragattacks.com (Third Party Advisory)
- github.com/vanhoefm/fragattacks/blob/master/SUMMARY.md (Third Party Advisory)
- www.openwall.com/lists/oss-security/2021/05/11/12 (mailing-list, Mailing List, Third Party Advisory)
- www.arista.com/en/support/advisories-notices/security-advisories/12602-security… (Third Party Advisory)
Frequently asked questions
- What is CVE-2020-26142?
- CVE-2020-26142 is a medium-severity vulnerability in OpenBSD, classified under Improper Neutralization of Special Elements in Output Used by a Downstream Component (Injection). CVSS score: 5.3/10. Published 2021-05-11.
- How severe is CVE-2020-26142?
- Medium severity. CVSS v3 base score is 5.3 out of 10.
- Is CVE-2020-26142 known to be exploited?
- 4 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.