what you don't know can hurt you

ABB IDAL FTP Server Buffer Overflow

ABB IDAL FTP Server Buffer Overflow
Posted Jun 21, 2019
Authored by Eldar Marcussen

The IDAL FTP server is vulnerable to a buffer overflow where a large string is sent by an authenticated attacker that causes a buffer overflow. This overflow is handled, but terminates the process. An authenticated attacker can send a FTP command string of 472 bytes or more to overflow a buffer causing an exception that terminates the server. An unauthenticated attacker can take advantage of the hardcoded or default credential pair exor/exor to become an authenticated attacker.

tags | exploit, overflow
advisories | CVE-2019-7231
MD5 | fc10a0c030b5fa18e687345426253408

ABB IDAL FTP Server Buffer Overflow

Change Mirror Download
XL-19-007 - ABB IDAL FTP Server Buffer Overflow Vulnerability
========================================================================

Identifiers
-----------
XL-19-007
CVE-2019-7231
ABBVU-IAMF-1902010


CVSS Score
----------
6.5 (AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)


Affected vendor
---------------
ABB (new.abb.com)


Credit
------
Eldar Marcussen - xen1thLabs - Software Labs


Vulnerability summary
---------------------
The IDAL FTP server is vulnerable to a buffer overflow where a large string is sent by an authenticated attacker that causes a buffer overflow. This overflow is handled, but terminates the process.


Technical details
-----------------
An authenticated attacker can send a FTP command string of 472 bytes or more to overflow a buffer causing an exception that terminates the server. An unauthenticated attacker can take advantage of the hardcoded or default credential pair exor/exor to become an authenticated attacker.


Proof of concept
----------------
```
perl -e 'print "USER exor\r\nPASS exor\r\n" . "A" x 472 . "\r\n";' | nc targetip 22
```

Affected systems
----------------
PB610 Panel Builder 600, order code: 1SAP500900R0101, versions 1.91 ... 2.8.0.367

Solution
--------
Apply the patches and instructions from vendor:
- ABB PB610 - https://search.abb.com/library/Download.aspx?DocumentID=3ADR010377&LanguageCode=en&DocumentPartId=&Action=Launch


Disclosure timeline
-------------------
04/02/2019 - Contacted ABB requesting disclosure coordination
05/02/2019 - Provided vulnerability details
05/06/2019 - Patch available
13/06/2019 - ABB Updated advisory to include this vulnerability
17/06/2019 - xen1thLabs public disclosure


Login or Register to add favorites

File Archive:

July 2020

  • Su
  • Mo
  • Tu
  • We
  • Th
  • Fr
  • Sa
  • 1
    Jul 1st
    15 Files
  • 2
    Jul 2nd
    19 Files
  • 3
    Jul 3rd
    11 Files
  • 4
    Jul 4th
    0 Files
  • 5
    Jul 5th
    0 Files
  • 6
    Jul 6th
    0 Files
  • 7
    Jul 7th
    0 Files
  • 8
    Jul 8th
    0 Files
  • 9
    Jul 9th
    0 Files
  • 10
    Jul 10th
    0 Files
  • 11
    Jul 11th
    0 Files
  • 12
    Jul 12th
    0 Files
  • 13
    Jul 13th
    0 Files
  • 14
    Jul 14th
    0 Files
  • 15
    Jul 15th
    0 Files
  • 16
    Jul 16th
    0 Files
  • 17
    Jul 17th
    0 Files
  • 18
    Jul 18th
    0 Files
  • 19
    Jul 19th
    0 Files
  • 20
    Jul 20th
    0 Files
  • 21
    Jul 21st
    0 Files
  • 22
    Jul 22nd
    0 Files
  • 23
    Jul 23rd
    0 Files
  • 24
    Jul 24th
    0 Files
  • 25
    Jul 25th
    0 Files
  • 26
    Jul 26th
    0 Files
  • 27
    Jul 27th
    0 Files
  • 28
    Jul 28th
    0 Files
  • 29
    Jul 29th
    0 Files
  • 30
    Jul 30th
    0 Files
  • 31
    Jul 31st
    0 Files

Top Authors In Last 30 Days

File Tags

Systems

packet storm

© 2020 Packet Storm. All rights reserved.

Services
Security Services
Hosting By
Rokasec
close