** Package changed: linux (Ubuntu) => lftp (Ubuntu)
** Also affects: ubuntu-z-systems
Importance: Undecided
Status: New
** Changed in: ubuntu-z-systems
Importance: Undecided => High
** Changed in: ubuntu-z-systems
Assignee: (unassigned) => Skipper Bug Screeners (skipper-screen-team)
** Changed in: lftp (Ubuntu)
Assignee: Skipper Bug Screeners (skipper-screen-team) => (unassigned)
** Also affects: lftp (Ubuntu Oracular)
Importance: Undecided
Status: New
** Also affects: lftp (Ubuntu Plucky)
Importance: Undecided
Status: New
** Tags added: rls-oo-incoming rls-pp-incoming
--
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https://bugs.launchpad.net/bugs/2091440
Title:
[UBUNTU 24.10] lftp: buffer overflow detected when accessing z/VM FTP
server and changing the directory
Status in Ubuntu on IBM z Systems:
New
Status in lftp package in Ubuntu:
New
Status in lftp source package in Oracular:
New
Status in lftp source package in Plucky:
New
Bug description:
---Problem Description---
lftp: buffer overflow detected when accessing z/VM FTP server and changing
the directory
---uname output---
Linux lnxzvmd1 6.11.0-9-generic #9-Ubuntu SMP Mon Oct 14 12:18:15 UTC 2024
s390x s390x s390x GNU/Linux
---Steps to Reproduce---
1. Connect with lftp to z/VM FTP server:
lftp -u hartmafk gdlvm7.pok.ibm.com
2. Validate correct connection:
ls
> BOOKM FILE V 65 9 1 2016-08-10 04:45:31
HAR191
> CPFMTXA EXCORIG V 63 711 7 2005-10-10 07:52:28
HAR191
> CPFMTXA EXEC V 63 711 7 2005-10-10 07:52:28
HAR191
> CPFMTXA MODORIG V 96 3 1 2005-10-14 09:30:44
HAR191
> CPFMTXA MODULE V 96 3 1 2005-10-14 09:30:44
HAR191
> CRUISE LASTCMDS V 88 53 1 2024-12-04 09:28:24
HAR191
> DDOPTS OPTIONS V 58 1 1 2002-12-03 16:26:24
HAR191
3. Change directory to SFS directory or minidisk:
cd HARTMAFK.191
*** buffer overflow detected ***: terminated
Aborted
Machine Type = IBM/S390 3906
---Debugger---
A debugger is not configured
Contact Information = frederik.hartm...@de.ibm.com
Userspace tool common name: lftp
The userspace tool has the following bit modes: 64
Userspace rpm: lftp
Userspace tool obtained from project website: 4.9.2-3ubuntu1
*Additional Instructions for frederik.hartm...@de.ibm.com:
-Post a private note with access information to the machine that the bug is
occuring on.
-Attach ltrace and strace of userspace application.
===============================================================================
This issue can only be reproduced when lftp is compiled without debug option.
I was able to reproduce this issue with a self compiled lftp 4.9.3 on
s390x with the default build and with a plain ./configure, I was NOT
able to reproduce this issue with ./configure --with-debug
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