Bug 1771909 (CVE-2019-17133)

Summary: CVE-2019-17133 kernel: buffer overflow in cfg80211_mgd_wext_giwessid in net/wireless/wext-sme.c
Product: [Other] Security Response Reporter: Dhananjay Arunesh <darunesh>
Component: vulnerabilityAssignee: Red Hat Product Security <security-response-team>
Status: CLOSED ERRATA QA Contact:
Severity: high Docs Contact:
Priority: high    
Version: unspecifiedCC: acaringi, airlied, asavkov, bdettelb, bhu, blc, brdeoliv, bskeggs, dhoward, dvlasenk, esammons, fhrbata, hdegoede, hkrzesin, iboverma, ichavero, itamar, jarodwilson, jeremy, jforbes, jglisse, jlelli, joe.lawrence, john.j5live, jonathan, josef, jpoimboe, jross, jschorr, jshortt, jstancek, jthierry, jwboyer, kernel-maint, kernel-mgr, labbott, lgoncalv, lilu, linville, masami256, matt, mchehab, mcressma, mjg59, mlangsdo, nmurray, plougher, qzhao, rhandlin, rt-maint, rvrbovsk, steved, williams, wmealing, ycote, ykopkova
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: Doc Type: If docs needed, set a value
Doc Text:
A vulnerability was found in the Linux kernel's generic WiFi ESSID handling implementation. The flaw allows a system to join a wireless network where the ESSID is longer than the maximum length of 32 characters, which can cause the system to crash or execute code.
Story Points: ---
Clone Of: Environment:
Last Closed: 2020-01-21 20:09:57 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Bug Depends On: 1771910, 1778625, 1778626, 1778627, 1778628, 1778629, 1778630, 1778631, 1778632, 1778633, 1778634, 1778635, 1778636, 1778637, 1778648, 1778649, 1778650, 1778651, 1778652, 1778653, 1778654, 1778655, 1778991, 1778992, 1778993, 1778994, 1778995, 1778996, 1778997, 1778998, 1778999    
Bug Blocks: 1771911    

Description Dhananjay Arunesh 2019-11-13 08:43:15 UTC
A vulnerability was found in the Linux kernels generic wifi management system in the function cfg80211_mgd_wext_giwessid.   Many of the wifi drivers use this software and if an attacker could trick or coerce a system to joining a wifi network with an essid longer than the standard could create a situation which could the essid data could corrupt kernel stack memory and possibly escalate privileges. 


Reference:
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=4ac2813cc867ae563a1ba5a9414bfb554e5796fa

Comment 1 Dhananjay Arunesh 2019-11-13 08:44:02 UTC
Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 1771910]

Comment 2 Justin M. Forbes 2019-11-13 13:15:19 UTC
This was fixed for Fedora with the 5.3.8 stable kernel updates

Comment 5 Wade Mealing 2019-12-02 08:48:38 UTC
From my initial understanding it appears as though this flaw requires getting the system to join a wireless network that has longer than the maximum expected length (32 characters according to the standard http://standards.ieee.org/getieee802/download/802.11-2007.pdf Section 7.3.2.1).

The attacker could possibly corrupt elements on the stack or the stack value itself.

Comment 12 errata-xmlrpc 2020-01-21 15:50:07 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2020:0174 https://access.redhat.com/errata/RHSA-2020:0174

Comment 13 Product Security DevOps Team 2020-01-21 20:09:57 UTC
This bug is now closed. Further updates for individual products will be reflected on the CVE page(s):

https://access.redhat.com/security/cve/cve-2019-17133

Comment 15 errata-xmlrpc 2020-02-04 19:30:32 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2020:0374 https://access.redhat.com/errata/RHSA-2020:0374

Comment 16 errata-xmlrpc 2020-02-04 19:30:50 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2020:0375 https://access.redhat.com/errata/RHSA-2020:0375

Comment 18 errata-xmlrpc 2020-02-18 14:43:48 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7.5 Extended Update Support

Via RHSA-2020:0543 https://access.redhat.com/errata/RHSA-2020:0543

Comment 19 errata-xmlrpc 2020-02-25 12:10:52 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7.4 Advanced Update Support
  Red Hat Enterprise Linux 7.4 Update Services for SAP Solutions
  Red Hat Enterprise Linux 7.4 Telco Extended Update Support

Via RHSA-2020:0592 https://access.redhat.com/errata/RHSA-2020:0592

Comment 20 errata-xmlrpc 2020-02-26 09:16:06 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise MRG 2

Via RHSA-2020:0609 https://access.redhat.com/errata/RHSA-2020:0609

Comment 21 errata-xmlrpc 2020-03-03 08:36:45 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7.3 Advanced Update Support
  Red Hat Enterprise Linux 7.3 Update Services for SAP Solutions
  Red Hat Enterprise Linux 7.3 Telco Extended Update Support

Via RHSA-2020:0653 https://access.redhat.com/errata/RHSA-2020:0653

Comment 22 errata-xmlrpc 2020-03-03 10:04:28 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7.2 Advanced Update Support

Via RHSA-2020:0661 https://access.redhat.com/errata/RHSA-2020:0661

Comment 23 errata-xmlrpc 2020-03-03 15:17:46 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7.6 Extended Update Support

Via RHSA-2020:0664 https://access.redhat.com/errata/RHSA-2020:0664

Comment 24 errata-xmlrpc 2020-03-11 16:45:47 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 6

Via RHSA-2020:0790 https://access.redhat.com/errata/RHSA-2020:0790