Bug 1321866 (CVE-2016-3075)

Summary: CVE-2016-3075 glibc: Stack overflow in nss_dns_getnetbyname_r
Product: [Other] Security Response Reporter: Adam Mariš <amaris>
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, codonell, dj, fweimer, glibc-bugzilla, law, mfabian, mnewsome, ngalvin, pfrankli, sardella, security-response-team, siddhesh, slawomir, yozone
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: glibc 2.24 Doc Type: Bug Fix
Doc Text:
A stack overflow vulnerability was found in _nss_dns_getnetbyname_r. On systems with nsswitch configured to include "networks: dns" with a privileged or network-facing service that would attempt to resolve user-provided network names, an attacker could provide an excessively long network name, resulting in stack corruption and code execution.
 Story Points: ---
Clone Of: Environment:
Last Closed: 2019-06-08 02:50:09 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: 1321954, 1321993    
Bug Blocks: 1321867, 1323912    
Attachments:
Description Flags
Crash report none

Description Adam Mariš 2016-03-29 09:47:04 UTC 
A stack overflow vulnerability (unbounded allocation) in _nss_dns_getnetbyname_r function was found.
Comment 1 Adam Mariš 2016-03-29 09:47:12 UTC 
Acknowledgments:

Name: Florian Weimer (Red Hat)
Comment 2 Adam Mariš 2016-03-29 09:49:54 UTC 
Created attachment 1141161 [details]
Crash report
Comment 4 Florian Weimer 2016-03-29 11:03:13 UTC 
Upstream bug: https://sourceware.org/bugzilla/show_bug.cgi?id=19879

Proposed patch: https://sourceware.org/ml/libc-alpha/2016-03/msg00692.html
Comment 5 Adam Mariš 2016-03-29 13:03:37 UTC 
Created glibc tracking bugs for this issue:

Affects: fedora-all [bug 1321954]
Comment 10 errata-xmlrpc 2016-11-03 08:31:23 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2016:2573 https://rhn.redhat.com/errata/RHSA-2016-2573.html