high
7.5
CWE
354
Advisory Published
Updated

CVE-2020-25862

First published: Tue Oct 06 2020(Updated: )

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.

Credit: cve@mitre.org cve@mitre.org

Affected SoftwareAffected VersionHow to fix
Wireshark Wireshark>=2.6.0<=2.6.20
Wireshark Wireshark>=3.0.0<=3.0.13
Wireshark Wireshark>=3.2.0<=3.2.6
Fedoraproject Fedora=31
Fedoraproject Fedora=32
Fedoraproject Fedora=33
openSUSE Leap=15.1
openSUSE Leap=15.2
Debian Debian Linux=9.0
Oracle Zfs Storage Appliance Firmware=8.8
Oracle Zfs Storage Appliance Firmware
ubuntu/wireshark<3.2.3-1ubuntu0.1~
3.2.3-1ubuntu0.1~
ubuntu/wireshark<2.6.10-1~ubuntu14.04.0~
2.6.10-1~ubuntu14.04.0~
ubuntu/wireshark<2.6.10-1~ubuntu16.04.0+
2.6.10-1~ubuntu16.04.0+
ubuntu/wireshark<3.2.7-1
3.2.7-1
ubuntu/wireshark<2.6.10-1~ubuntu18.04.0+
2.6.10-1~ubuntu18.04.0+
All of
Oracle Zfs Storage Appliance Firmware=8.8
Oracle Zfs Storage Appliance Firmware
debian/wireshark
2.6.20-0+deb10u4
2.6.20-0+deb10u8
3.4.10-0+deb11u1
4.0.11-1~deb12u1
4.2.2-1
4.2.2-1.1

Remedy

https://gitlab.com/wireshark/wireshark/-/commit/7f3fe6164a68b76d9988c4253b24d43f498f1753

Remedy

https://www.oracle.com/security-alerts/cpujan2021.html

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Reference Links

Parent vulnerabilities

(Appears in the following advisories)

Frequently Asked Questions

  • What is CVE-2020-25862?

    CVE-2020-25862 is a vulnerability in Wireshark versions 3.2.0 to 3.2.6, 3.0.0 to 3.0.13, and 2.6.0 to 2.6.20 that could cause the TCP dissector to crash.

  • How severe is CVE-2020-25862?

    CVE-2020-25862 has a severity rating of 7.5, which is considered high.

  • How can I fix CVE-2020-25862?

    To fix CVE-2020-25862, update Wireshark to version 3.2.3-1ubuntu0.1~ or install the latest available version from the official Wireshark website.

  • Where can I find more information about CVE-2020-25862?

    You can find more information about CVE-2020-25862 in the following references: - [Wireshark GitLab Commit](https://gitlab.com/wireshark/wireshark/-/commit/7f3fe6164a68b76d9988c4253b24d43f498f1753) - [Wireshark GitLab Issue](https://gitlab.com/wireshark/wireshark/-/issues/16816) - [Wireshark Security Advisory](https://www.wireshark.org/security/wnpa-sec-2020-12.html)

  • What is the Common Weakness Enumeration (CWE) for CVE-2020-25862?

    The Common Weakness Enumeration (CWE) for CVE-2020-25862 is CWE-354, which refers to a Improper Handling of Non-Null Terminated String.

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