Vulnerability Description
In Wireshark 3.2.0 to 3.2.6, 3.0.0 to 3.0.13, and 2.6.0 to 2.6.20, the TCP dissector could crash. This was addressed in epan/dissectors/packet-tcp.c by changing the handling of the invalid 0xFFFF checksum.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Wireshark | Wireshark | >= 2.6.0, <= 2.6.20 |
| Fedoraproject | Fedora | 31 |
| Opensuse | Leap | 15.1 |
| Debian | Debian Linux | 9.0 |
| Oracle | Zfs Storage Appliance Firmware | 8.8 |
Related Weaknesses (CWE)
References
- http://lists.opensuse.org/opensuse-security-announce/2020-11/msg00035.htmlMailing ListThird Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2020-11/msg00038.htmlMailing ListThird Party Advisory
- https://gitlab.com/wireshark/wireshark/-/commit/7f3fe6164a68b76d9988c4253b24d43fPatchThird Party Advisory
- https://gitlab.com/wireshark/wireshark/-/issues/16816ExploitIssue TrackingThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2021/02/msg00008.htmlMailing ListThird Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro
- https://www.oracle.com/security-alerts/cpujan2021.htmlPatchThird Party Advisory
- https://www.wireshark.org/security/wnpa-sec-2020-12.htmlVendor Advisory
- http://lists.opensuse.org/opensuse-security-announce/2020-11/msg00035.htmlMailing ListThird Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2020-11/msg00038.htmlMailing ListThird Party Advisory
- https://gitlab.com/wireshark/wireshark/-/commit/7f3fe6164a68b76d9988c4253b24d43fPatchThird Party Advisory
- https://gitlab.com/wireshark/wireshark/-/issues/16816ExploitIssue TrackingThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2021/02/msg00008.htmlMailing ListThird Party Advisory
FAQ
What is CVE-2020-25862?
CVE-2020-25862 is a vulnerability with a CVSS score of 7.5 (HIGH). In Wireshark 3.2.0 to 3.2.6, 3.0.0 to 3.0.13, and 2.6.0 to 2.6.20, the TCP dissector could crash. This was addressed in epan/dissectors/packet-tcp.c by changing the handling of the invalid 0xFFFF chec...
How severe is CVE-2020-25862?
CVE-2020-25862 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2020-25862?
Check the references section above for vendor advisories and patch information. Affected products include: Wireshark Wireshark, Fedoraproject Fedora, Opensuse Leap, Debian Debian Linux, Oracle Zfs Storage Appliance Firmware.