Bug 1231246
| Summary: | tcpdump CDP dissector broken | ||
|---|---|---|---|
| Product: | Red Hat Enterprise Linux 7 | Reporter: | Martin Žember <mzember> |
| Component: | tcpdump | Assignee: | Michal Sekletar <msekleta> |
| Status: | CLOSED ERRATA | QA Contact: | Jaroslav Aster <jaster> |
| Severity: | high | Docs Contact: | |
| Priority: | high | ||
| Version: | 7.2 | CC: | ebenes, jaster, msekleta, mvadkert |
| Target Milestone: | rc | Keywords: | Patch |
| Target Release: | --- | ||
| Hardware: | All | ||
| OS: | Linux | ||
| URL: | https://github.com/the-tcpdump-group/tcpdump/issues/401 | ||
| Whiteboard: | |||
| Fixed In Version: | tcpdump-4.5.1-3.el7 | Doc Type: | Bug Fix |
| Doc Text: |
Previously, the tcpdump Cisco Discovery Protocol (CDP) dissector did not completely dissect CDP packets that contained certain type-length-value (TLV) fields. When the dissector encountered a CDP packet containing a TLV field that was not associated with any data and whose length was equal to 0, the dissector ended prematurely. The code that handles CDP packet parsing has been modified to no longer stop parsing in this situation. As a result, the tcpdump CDP dissector dissects CDP packets containing TLV fields with the length of 0 and no data as expected.
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Story Points: | --- |
| Clone Of: | 1130111 | Environment: | |
| Last Closed: | 2015-11-19 11:22:16 UTC | Type: | Bug |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
| Embargoed: | |||
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Comment 2
Michal Sekletar
2015-06-18 15:41:20 UTC
Since the problem described in this bug report should be resolved in a recent advisory, it has been closed with a resolution of ERRATA. For information on the advisory, and where to find the updated files, follow the link below. If the solution does not work for you, open a new bug report. https://rhn.redhat.com/errata/RHBA-2015-2143.html |