Bug 680358 (CVE-2011-1020) - CVE-2011-1020 kernel: no access restrictions of /proc/pid/* after setuid program exec
Summary: CVE-2011-1020 kernel: no access restrictions of /proc/pid/* after setuid prog...
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2011-1020
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 692038 692039 692040 692041 692042
Blocks:
TreeView+ depends on / blocked
 
Reported: 2011-02-25 08:56 UTC by Eugene Teo (Security Response)
Modified: 2023-05-11 17:08 UTC (History)
11 users (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Clone Of:
Environment:
Last Closed: 2015-07-29 13:59:39 UTC
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2011:1253 0 normal SHIPPED_LIVE Important: kernel-rt security and bug fix update 2011-09-12 19:43:48 UTC
Red Hat Product Errata RHSA-2011:1530 0 normal SHIPPED_LIVE Moderate: Red Hat Enterprise Linux 6 kernel security, bug fix and enhancement update 2011-12-06 01:45:35 UTC
Red Hat Product Errata RHSA-2012:0007 0 normal SHIPPED_LIVE Important: kernel security, bug fix, and enhancement update 2012-01-11 01:02:46 UTC
Red Hat Product Errata RHSA-2012:0116 0 normal SHIPPED_LIVE Moderate: kernel security and bug fix update 2012-02-15 05:42:54 UTC

Description Eugene Teo (Security Response) 2011-02-25 08:56:08 UTC 
Description:
The proc filesystem implementation does not restrict access to the /proc
directory tree of a process after this process performs an exec of a setuid
program, which allows local users to obtain sensitive information or
potentially cause other integrity issues.

References:
https://lkml.org/lkml/2011/2/7/368
http://seclists.org/fulldisclosure/2011/Jan/421
http://openwall.com/lists/oss-security/2011/02/24/18

Acknowledgements:

Red Hat would like to thank Kees Cook for reporting this issue.
Comment 7 Petr Matousek 2011-03-30 09:51:16 UTC 
Statement:

Red Hat Enterprise Linux 4 is now in Production 3 of the maintenance life-cycle, https://access.redhat.com/support/policy/updates/errata/, therefore the fix for this issue is not currently planned to be included in the future updates.

This has been addressed in Red Hat Enterprise Linux 5, 6 and Red Hat Enterprise MRG via RHSA-2012:0007, RHSA-2011:1530 and RHSA-2011:1253 respectively.
Comment 15 errata-xmlrpc 2011-09-12 19:44:53 UTC 
This issue has been addressed in following products:

  MRG for RHEL-6 v.2

Via RHSA-2011:1253 https://rhn.redhat.com/errata/RHSA-2011-1253.html
Comment 16 errata-xmlrpc 2011-12-06 12:44:19 UTC 
This issue has been addressed in following products:

  Red Hat Enterprise Linux 6

Via RHSA-2011:1530 https://rhn.redhat.com/errata/RHSA-2011-1530.html
Comment 17 errata-xmlrpc 2012-01-10 20:05:39 UTC 
This issue has been addressed in following products:

  Red Hat Enterprise Linux 5

Via RHSA-2012:0007 https://rhn.redhat.com/errata/RHSA-2012-0007.html
Comment 18 errata-xmlrpc 2012-02-15 00:43:12 UTC 
This issue has been addressed in following products:

  Red Hat Enterprise Linux 6.1 EUS - Server Only

Via RHSA-2012:0116 https://rhn.redhat.com/errata/RHSA-2012-0116.html
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