CVE-2020-25862: 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

High severity · published Oct 6, 2020

CVE-2020-25862

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

7.5

CVSS

2.4%

EPSS

On KEV

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 vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack vector

Network

Complexity

Low

Privileges

None

User interaction

None

Confidentiality

None

Integrity

None

Availability

High

Scope

Unchanged

Exploitation

Is it being used?

Exploit prediction (EPSS)2.4% · higher than 84% of CVEs

Exploited in the wildNo evidence yet

CISA KEVNot listed

Ransomware campaign useNot known

Affected products

Which versions

Debian Linux · Debian

9.0 · source: NVD

Fedora · Fedoraproject

31; 32; 33 · source: NVD

Leap · Opensuse

15.1; 15.2 · source: NVD

Wireshark · Wireshark

2.6.0 through 2.6.20; 3.0.0 through 3.0.13; 3.2.0 through 3.2.6 · source: NVD

Zfs Storage Appliance Firmware · Oracle

8.8 · source: NVD

Affected product

Debian Linux

Debian

All Debian Linux CVEs

References

NVD

https://nvd.nist.gov/vuln/detail/CVE-2020-25862

CVE.org

https://www.cve.org/CVERecord?id=CVE-2020-25862

Mailing List

http://lists.opensuse.org/opensuse-security-announce/2020-11/msg00035.html

Mailing List

http://lists.opensuse.org/opensuse-security-announce/2020-11/msg00038.html

Patch

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

Exploit

https://gitlab.com/wireshark/wireshark/-/issues/16816

Mailing List

https://lists.debian.org/debian-lts-announce/2021/02/msg00008.html

lists.fedoraproject.org

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4DQHPKZFQ7W3X34RYN3FWFYCFJD4FXJW/