Out-of-bounds Read in Oracle Zfs Storage Appliance Kit
CVE-2020-26421
Crash in USB HID protocol dissector and possibly other dissectors in Wireshark 3.4.0 and 3.2.0 to 3.2.8 allows denial of service via packet injection or crafted capture file.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.2 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:L.
EPSS exploit prediction
EPSS: 0.025 (84.5th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 84th percentile — 84.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.026 · newest: 0.025 · change: -0.000
Affected products
- Oracle Zfs Storage Appliance Kit — versions 8.8
- The Wireshark Foundation — versions 3.4.0, >= 3.2.0 to < 3.2.9
- Wireshark — versions 3.4.0
- Debian Linux — versions 9.0
- Fedoraproject Fedora — versions 32, 33
Weakness classification (CWE)
Public proof-of-concept exploits
References
- www.wireshark.org/security/wnpa-sec-2020-17.html (Vendor Advisory)
- gitlab.com/wireshark/wireshark/-/issues/16958 (Exploit, Third Party Advisory, Issue Tracking)
- gitlab.com/gitlab-org/cves/-/blob/master/2020/CVE-2020-26421.json (Third Party Advisory)
- security.gentoo.org/glsa/202101-12 (vendor-advisory, Third Party Advisory)
- lists.debian.org/debian-lts-announce/2021/02/msg00008.html (mailing-list, Mailing List, Third Party Advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- www.oracle.com/security-alerts/cpuApr2021.html (Patch, Third Party Advisory)
Frequently asked questions
- What is CVE-2020-26421?
- CVE-2020-26421 is a medium-severity vulnerability in Oracle Zfs Storage Appliance Kit, classified under Out-of-bounds Read. CVSS score: 4.2/10. Published 2020-12-11.
- How severe is CVE-2020-26421?
- Medium severity. CVSS v3 base score is 4.2 out of 10.
- Is CVE-2020-26421 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.