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Security Bulletin: IBM Domino server IMAP EXAMINE command stack buffer overflow (CVE-2017-1274)

Security Bulletin


Summary

A vulnerability in the IBM Domino server IMAP EXAMINE command potentially could be exploited by an authenticated user resulting in a stack buffer overflow. This could allow a remote attacker to execute code with the privileges of the Domino server. Current 64-bit platforms leverage ASLR (Address Space Layout Randomization) which dramatically reduces the probability of rogue code execution. Conversely, Windows 32-bit Domino servers, while not common, are at greater risk to this attack.

This attack has been referred to publicly with the code name "Emphasismine".

Vulnerability Details

CVEID: CVE-2017-1274

DESCRIPTION:
IBM Domino is vulnerable to a stack based overflow in the IMAP service that could allow an authenticated attacker to execute arbitrary code by specifying a large mailbox name.
CVSS Base Score: 8.8
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/124749 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H)

Affected Products and Versions

IBM Domino 9.0.1 through 9.0.1 Feature Pack 8 Interim Fix 1
IBM Domino 9.0 through 9.0 Interim Fix 7
IBM Domino 8.5.3 through 8.5.3 Fix Pack 6 Interim Fix 16
IBM Domino 8.5.2 through 8.5.2 Fix Pack 4
IBM Domino 8.5.1 through 8.5.1 Fix Pack 5

Remediation/Fixes

CVE-2017-1274 is tracked as SPR# SKAIALJE9N.


Fixes for the issues described above are introduced in Domino 9.0.1 Feature Pack 8 Interim Fix 2 and Domino 8.5.3 Fix Pack 6 Interim Fix 17. See the technotes linked below for fix download links.

Product Version Remediation
IBM Domino 9.0.1 FP8 IF2 http://www.ibm.com/support/docview.wss?uid=swg21657963
IBM Domino 8.5.3 FP6 IF17 http://www.ibm.com/support/docview.wss?uid=swg21663874



Customers who remain on the following releases may open a Service Request with IBM Support and reference SPR SKAIALJE9N for a custom hotfix:
  • IBM Domino 9.0.1 through 9.0.1 Fix Pack 7 Interim Fix 2
  • IBM Domino 9.0 through 9.0 Interim Fix 7
  • IBM Domino 8.5.3 through 8.5.3 Fix Pack 6 Interim Fix 16
  • IBM Domino 8.5.2 through 8.5.2 Fix Pack 4
  • IBM Domino 8.5.1 through 8.5.1 Fix Pack 5

Workarounds and Mitigations

IBM recommends all clients apply the fix. However, clients may disable IMAP services as a temporary fix.

Get Notified about Future Security Bulletins

References

Complete CVSS v3 Guide
On-line Calculator v3

Related information

IBM Secure Engineering Web Portal
IBM Product Security Incident Response Blog

Change History

20-Apr-2017. Original version published

*The CVSS Environment Score is customer environment specific and will ultimately impact the Overall CVSS Score. Customers can evaluate the impact of this vulnerability in their environments by accessing the links in the Reference section of this Security Bulletin.

Disclaimer

According to the Forum of Incident Response and Security Teams (FIRST), the Common Vulnerability Scoring System (CVSS) is an "industry open standard designed to convey vulnerability severity and help to determine urgency and priority of response." IBM PROVIDES THE CVSS SCORES "AS IS" WITHOUT WARRANTY OF ANY KIND, INCLUDING THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. CUSTOMERS ARE RESPONSIBLE FOR ASSESSING THE IMPACT OF ANY ACTUAL OR POTENTIAL SECURITY VULNERABILITY.

Document information

More support for: IBM Domino
POP3 / IMAP

Software version: 8.5.3, 8.5.3.6, 9.0, 9.0.1, 9.0.1.8

Operating system(s): Platform Independent

Reference #: 2002280

Modified date: 20 April 2017


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