RHEL Engineering is moving the tracking of its product development work on RHEL 6 through RHEL 9 to Red Hat Jira (issues.redhat.com). If you're a Red Hat customer, please continue to file support cases via the Red Hat customer portal. If you're not, please head to the "RHEL project" in Red Hat Jira and file new tickets here. Individual Bugzilla bugs in the statuses "NEW", "ASSIGNED", and "POST" are being migrated throughout September 2023. Bugs of Red Hat partners with an assigned Engineering Partner Manager (EPM) are migrated in late September as per pre-agreed dates. Bugs against components "kernel", "kernel-rt", and "kpatch" are only migrated if still in "NEW" or "ASSIGNED". If you cannot log in to RH Jira, please consult article #7032570. That failing, please send an e-mail to the RH Jira admins at rh-issues@redhat.com to troubleshoot your issue as a user management inquiry. The email creates a ServiceNow ticket with Red Hat. Individual Bugzilla bugs that are migrated will be moved to status "CLOSED", resolution "MIGRATED", and set with "MigratedToJIRA" in "Keywords". The link to the successor Jira issue will be found under "Links", have a little "two-footprint" icon next to it, and direct you to the "RHEL project" in Red Hat Jira (issue links are of type "https://issues.redhat.com/browse/RHEL-XXXX", where "X" is a digit). This same link will be available in a blue banner at the top of the page informing you that that bug has been migrated.
Bug 714154 - overrunning array when executing nss_pcache
Summary: overrunning array when executing nss_pcache
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: Red Hat Enterprise Linux 6
Classification: Red Hat
Component: mod_nss
Version: 6.1
Hardware: Unspecified
OS: Unspecified
unspecified
high
Target Milestone: rc
: ---
Assignee: Rob Crittenden
QA Contact: Chandrasekar Kannan
URL:
Whiteboard:
Depends On:
Blocks: 714255 1022298 1022717
TreeView+ depends on / blocked
 
Reported: 2011-06-17 13:26 UTC by Rob Crittenden
Modified: 2015-01-04 23:49 UTC (History)
4 users (show)

Fixed In Version: mod_nss-1.0.8-13.el6
Doc Type: Bug Fix
Doc Text:
Previously, a static array containing the arguments for launching the nss_pcache command was overflowing the size by one. This could lead to a variety of issues including unexpected termination. This bug has been fixed, and mod_nss now uses properly sized static array when launching nss_pcache.
Clone Of:
: 714255 1022298 1022717 (view as bug list)
Environment:
Last Closed: 2011-12-06 16:37:32 UTC
Target Upstream Version:
Embargoed:


Attachments (Terms of Use)
Use properly sized static array (740 bytes, patch)
2011-08-01 17:28 UTC, Rob Crittenden
no flags Details | Diff


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHBA-2011:1656 0 normal SHIPPED_LIVE mod_nss bug fix update 2011-12-06 00:50:24 UTC

Description Rob Crittenden 2011-06-17 13:26:01 UTC
Description of problem:

mod_nss-1.0.8/nss_engine_init.c:467: overrun-local: Overrunning static array "child_argv", with 5 elements, at position 5 with index variable "5".

Version-Release number of selected component (if applicable):
mod_nss-1.0.8-12.el6

Comment 1 Jenny Severance 2011-06-20 19:12:47 UTC
can you please add some more information about this issue? steps to reproduce and verify?

Comment 2 Rob Crittenden 2011-06-20 19:19:19 UTC
In the worst case this would result in core dump. mod_nss is allocating an array of 5 elements and writing 6 to it. Through good fortune it isn't overwriting the memory or something else.

Comment 3 Rob Crittenden 2011-08-01 17:28:25 UTC
Created attachment 516182 [details]
Use properly sized static array

Comment 5 Tomas Capek 2011-08-22 09:39:30 UTC
    Technical note added. If any revisions are required, please edit the "Technical Notes" field
    accordingly. All revisions will be proofread by the Engineering Content Services team.
    
    New Contents:
Previously, a static array containing the arguments for launching the nss_pcache command was overflowing the size by one. This could lead to a variety of issues including unexpected termination. This bug has been fixed, and mod_nss now uses properly sized static array when launching nss_pcache.

Comment 6 Jenny Severance 2011-09-30 13:56:38 UTC
please add steps to reproduce this issue.

Comment 7 Rob Crittenden 2011-10-03 17:10:32 UTC
This bug was identified by Coverity. It requires code inspection to verify, we never saw this in the wild.

Comment 8 Jenny Severance 2011-10-03 17:41:42 UTC
Will we verify Sanity Only then, that no regressions occur during testing.

Comment 10 errata-xmlrpc 2011-12-06 16:37:32 UTC
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

http://rhn.redhat.com/errata/RHBA-2011-1656.html


Note You need to log in before you can comment on or make changes to this bug.