Bug 730379 - libresolv is not compiled with the stack protector enabled
libresolv is not compiled with the stack protector enabled
Status: CLOSED ERRATA
Product: Red Hat Enterprise Linux 6
Classification: Red Hat
Component: glibc (Show other bugs)
6.1
All Unspecified
high Severity medium
: rc
: ---
Assigned To: Andreas Schwab
qe-baseos-tools
:
Depends On:
Blocks: 756453
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Reported: 2011-08-12 13:13 EDT by Steve Grubb
Modified: 2011-12-06 12:48 EST (History)
1 user (show)

See Also:
Fixed In Version: glibc-2.12-1.38.el6
Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of:
: 756453 (view as bug list)
Environment:
Last Closed: 2011-12-06 12:48:02 EST
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Regression: ---
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CRM:
Verified Versions:
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oVirt Team: ---
RHEL 7.3 requirements from Atomic Host:


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Description Steve Grubb 2011-08-12 13:13:59 EDT
Description of problem:
The libresolv library is not compiled with the stack protector enabled. Because it talks to remote DNS servers to do lookups, it might be subjected to malformed replies. Although there are no known bugs in this library that are exploitable, it is prudent to make sure we have used protection mechanisms built into the compiler "just in case". Because of network delays and server response times, any overhead created by the stack protector is likely to be unnoticed.

Steps to Reproduce:
1. checksec.sh --file /lib64/libresolv-2.12.so
  
Actual results:
Partial RELRO   No canary found   NX enabled    Dynamic Shared Object 

Expected results:
Partial RELRO   Canary found   NX enabled    Dynamic Shared Object
Comment 3 errata-xmlrpc 2011-12-06 12:48:02 EST
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/RHSA-2011-1526.html

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