In Wireshark 2.6.0 to 2.6.1, 2.4.0 to 2.4.7, and 2.2.0 to 2.2.15, the BGP protocol dissector could go into a large loop. This was addressed in epan/dissectors/packet-bgp.c by validating Path Attribute lengths.
The MITRE CVE dictionary describes this issue as:
Find out more about CVE-2018-14342 from the MITRE CVE dictionary dictionary and NIST NVD.
This issue did not affect the versions of wireshark as shipped with Red Hat Enterprise Linux 6 and 7 (versions 1.8.10 and 1.10.14, respectively).
NOTE: The following CVSS v3 metrics and score provided are preliminary and subject to review.
| CVSS3 Base Score | 5.9 |
|---|---|
| CVSS3 Base Metrics | CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H |
| Attack Vector | Network |
| Attack Complexity | High |
| Privileges Required | None |
| User Interaction | None |
| Scope | Unchanged |
| Confidentiality | None |
| Integrity Impact | None |
| Availability Impact | High |
| Platform | Package | State |
|---|---|---|
| Red Hat Enterprise Linux 7 | wireshark | Not affected |
| Red Hat Enterprise Linux 6 | wireshark | Not affected |
Vulmon