Bug 1175369 (CVE-2014-9402)

Summary: CVE-2014-9402 glibc: denial of service in getnetbyname function
Product: [Other] Security Response Reporter: Vasyl Kaigorodov <vkaigoro>
Component: vulnerabilityAssignee: Red Hat Product Security <security-response-team>
Status: CLOSED ERRATA QA Contact:
Severity: low Docs Contact:
Priority: low    
Version: unspecifiedCC: arjun.is, ashankar, btotty, carnil, codonell, dsirrine, fweimer, glibc-bugzilla, jakub, jrusnack, law, mnewsome, pfrankli, security-response-team, spoyarek
Target Milestone: ---Keywords: Reopened, Security
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2019-06-08 02:37:13 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On: 1175370, 1497132    
Bug Blocks: 1175371, 1188240, 1498774    

Description Vasyl Kaigorodov 2014-12-17 15:28:06 UTC 
It was reported [1] that getnetbyname function in glibc 2.21 in earlier will enter an infinite loop if the DNS backend is activated in the system Name Service Switch configuration, and the DNS resolver receives a positive answer while processing the network name.

Upstream commit that fixes this issue:
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=11e3417af6e354f1942c68a271ae51e892b2814d

[1]: https://sourceware.org/bugzilla/show_bug.cgi?id=17630
Comment 1 Vasyl Kaigorodov 2014-12-17 15:29:00 UTC 
Created glibc tracking bugs for this issue:

Affects: fedora-all [bug 1175370]
Comment 2 Murray McAllister 2014-12-18 02:54:39 UTC 
MITRE assigned CVE-2014-9402 to this issue:

http://seclists.org/oss-sec/2014/q4/1080
Comment 5 Vincent Danen 2015-02-13 20:35:43 UTC 
Statement:

A non-standard system configuration ("networks: file dns" in /etc/nsswitch.conf) and possibly a DNS spoofing attack is required to exploit this flaw.

Red Hat Product Security has rated this issue as having Low security impact. This issue is not currently planned to be addressed in future updates. For additional information, refer to the Issue Severity Classification: https://access.redhat.com/security/updates/classification/.
Comment 9 errata-xmlrpc 2018-04-10 08:20:33 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2018:0805 https://access.redhat.com/errata/RHSA-2018:0805