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Bug 1187109 - (CVE-2013-7423) CVE-2013-7423 glibc: getaddrinfo() writes DNS queries to random file descriptors under high load
CVE-2013-7423 glibc: getaddrinfo() writes DNS queries to random file descript...
Status: CLOSED ERRATA
Product: Security Response
Classification: Other
Component: vulnerability (Show other bugs)
unspecified
All Linux
medium Severity medium
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Assigned To: Red Hat Product Security
impact=moderate,public=20130912,repor...
: Security
Depends On: 1144019 1194143 1207995 1207996 1266110 1339960
Blocks: 1187112 1199526 1210268 1262918
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Reported: 2015-01-29 06:25 EST by Vasyl Kaigorodov
Modified: 2016-06-07 01:37 EDT (History)
21 users (show)

See Also:
Fixed In Version:
Doc Type: Bug Fix
Doc Text:
It was discovered that, under certain circumstances, glibc's getaddrinfo() function would send DNS queries to random file descriptors. An attacker could potentially use this flaw to send DNS queries to unintended recipients, resulting in information disclosure or data loss due to the application encountering corrupted data.
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Clone Of:
Environment:
Last Closed: 2015-11-20 00:46:38 EST
Type: ---
Regression: ---
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CRM:
Verified Versions:
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oVirt Team: ---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: ---

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External Trackers
Tracker ID Priority Status Summary Last Updated
Sourceware 15946 None None None Never
Red Hat Product Errata RHSA-2015:0863 normal SHIPPED_LIVE Moderate: glibc security and bug fix update 2015-04-21 11:34:41 EDT
Red Hat Product Errata RHSA-2015:2199 normal SHIPPED_LIVE Moderate: glibc security, bug fix, and enhancement update 2015-11-19 03:04:22 EST
Red Hat Product Errata RHSA-2015:2589 normal SHIPPED_LIVE Important: glibc security update 2015-12-09 08:57:25 EST
Red Hat Product Errata RHSA-2016:1207 normal SHIPPED_LIVE Moderate: glibc security update 2016-06-07 05:37:49 EDT

  None (edit)
Description Vasyl Kaigorodov 2015-01-29 06:25:30 EST 
It was reported [1] that under high load, getaddrinfo() starts sending DNS queries to random file descriptors, e.g. some unrelated socket connected to a remote service.

[1]: https://sourceware.org/bugzilla/show_bug.cgi?id=15946
Comment 1 Siddhesh Poyarekar 2015-01-29 08:45:30 EST 
FYI, there's a rhel-6.7 bug for this already:

https://bugzilla.redhat.com/show_bug.cgi?id=1144019
Comment 8 errata-xmlrpc 2015-04-21 07:35:03 EDT 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 6

Via RHSA-2015:0863 https://rhn.redhat.com/errata/RHSA-2015-0863.html
Comment 10 Vasyl Kaigorodov 2015-06-30 05:46:51 EDT 
Statement:

This issue did not affect the versions of glibc as shipped with Red Hat Enterprise Linux 5 as they did not include the vulnerable code, which was introduced in later versions.
Comment 13 Akemi Yagi 2015-07-08 15:48:08 EDT 
Is there a plan to address the issue in RHEL-7?
Comment 14 Andrew Gunnerson 2015-07-16 16:11:38 EDT 
Any updates on whether this will be fixed in RHEL7? It's particularly easy to trigger on a docker host (we have 4 concurrent short-lived containers spinning up every few minutes). As soon as we have high load, DNS queries break until we restart the daemon.
Comment 19 errata-xmlrpc 2015-11-18 23:15:53 EST 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2015:2199 https://rhn.redhat.com/errata/RHSA-2015-2199.html
Comment 20 errata-xmlrpc 2015-12-09 03:58:03 EST 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7.1 EUS - Server and Compute Node Only
  Red Hat Enterprise Linux 7.1 EUS  - Server and Compute Node Only

Via RHSA-2015:2589 https://rhn.redhat.com/errata/RHSA-2015-2589.html
Comment 21 errata-xmlrpc 2016-06-07 01:37:59 EDT 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 6.5 Advanced Update Support

Via RHSA-2016:1207 https://access.redhat.com/errata/RHSA-2016:1207
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