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Bug 1597824

Summary: TFTP transfer alters the file, when sent from server running tftp-5.2-22 to client running tftp-5.2-11
Product: Red Hat Enterprise Linux 7 Reporter: Ravindra Patil <ravpatil>
Component: tftpAssignee: Lukáš Nykrýn <lnykryn>
Status: CLOSED WONTFIX QA Contact: qe-baseos-daemons
Severity: high Docs Contact:
Priority: unspecified    
Version: 7.1CC: kwalker
Target Milestone: rc   
Target Release: ---   
Hardware: x86_64   
OS: Linux   
Whiteboard:
Fixed In Version: Doc Type: If docs needed, set a value
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2020-11-11 21:56:12 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:
Bug Depends On:    
Bug Blocks: 1630908, 1643104    
Attachments:
Description Flags
Binary file used to test this behavior of tftp none

Description Ravindra Patil 2018-07-03 16:46:15 UTC
Created attachment 1456293 [details]
Binary file used to test this behavior of tftp

Description of problem:
TFTP transfer between the server running tftp-5.2-22 and the client running tftp-5.2.11 changes the file.

Version-Release number of selected component (if applicable):
tftp-5.2-11.el7.x86_64

How reproducible:

On Server Side : tftp-5.2-22.el7.x86_64  : RHEL 7.5

# md5sum last
8e0ac1058ab6cb3876ecaa727b2313fd  last
# ls -l last
-rwxr-xr-x. 1 root root 19568 Jan 27  2014 last


Client Side : tftp-5.2-11.el7.x86_64  : RHEL 7.1
# md5sum last 
2398146098365baa85e8682b36037ceb  last
# ls -l last
-rw-r--r--. 1 root root 19555 Jun 30 07:42 last

Then updated it to tftp-5.2-22.el7.x86_64, and now checksum and size are same as that were on Server side
# md5sum last 
8e0ac1058ab6cb3876ecaa727b2313fd  last
# ls -l last
-rw-r--r--. 1 root root 19568 Jun 30 07:48 last

Steps to Reproduce:
1. Install tftp-5.2-22.el7.x86_64 on server 
2. Install tftp-5.2-11.el7.x86_64 on client side
3. Now transfer the file using tftp 
$> tftp <server-ip>
tftp> get last

File gets transferred but file size and checksum does not match

Actual results:
File checksum and size changed
# md5sum last 
2398146098365baa85e8682b36037ceb  last
# ls -l last
-rw-r--r--. 1 root root 19555 Jun 30 07:42 last

Expected results:
File checksum and file size should not change at all, it should be as it. 


Additional info:

Actual size and checksum of the file on server side is :

# md5sum last
8e0ac1058ab6cb3876ecaa727b2313fd  last
# ls -l last
-rwxr-xr-x. 1 root root 19568 Jan 27  2014 last

When using tftp-5.2-22.el7.x86_64 on client instead of tftp-5.2-11.el7.x86_64, files are getting transferred as expected. Without any changes.

Comment 10 Chris Williams 2020-11-11 21:56:12 UTC
Red Hat Enterprise Linux 7 shipped it's final minor release on September 29th, 2020. 7.9 was the last minor releases scheduled for RHEL 7.
From intial triage it does not appear the remaining Bugzillas meet the inclusion criteria for Maintenance Phase 2 and will now be closed. 

From the RHEL life cycle page:
https://access.redhat.com/support/policy/updates/errata#Maintenance_Support_2_Phase
"During Maintenance Support 2 Phase for Red Hat Enterprise Linux version 7,Red Hat defined Critical and Important impact Security Advisories (RHSAs) and selected (at Red Hat discretion) Urgent Priority Bug Fix Advisories (RHBAs) may be released as they become available."

If this BZ was closed in error and meets the above criteria please re-open it flag for 7.9.z, provide suitable business and technical justifications, and follow the process for Accelerated Fixes:
https://source.redhat.com/groups/public/pnt-cxno/pnt_customer_experience_and_operations_wiki/support_delivery_accelerated_fix_release_handbook  

Feature Requests can re-opened and moved to RHEL 8 if the desired functionality is not already present in the product. 

Please reach out to the applicable Product Experience Engineer[0] if you have any questions or concerns.  

[0] https://bugzilla.redhat.com/page.cgi?id=agile_component_mapping.html&product=Red+Hat+Enterprise+Linux+7