Bug 1468493 – CVE-2017-10980 freeradius: Memory leak in decode_tlv()

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Bug 1468493 - (CVE-2017-10980) CVE-2017-10980 freeradius: Memory leak in decode_tlv()

Summary:	CVE-2017-10980 freeradius: Memory leak in decode_tlv()

Status:	CLOSED ERRATA

Aliases:	CVE-2017-10980

Product:	Security Response
Classification:	Other
Component:	vulnerability (Show other bugs)
Sub Component:
Version:	unspecified
Hardware:	All Linux

Priority	medium Severity medium
Target Milestone:	---
Target Release:	---
Assigned To:	Red Hat Product Security
QA Contact:
Docs Contact:

URL:
Whiteboard:	impact=moderate,public=20170717,repor...
Keywords:	Security

Depends On:	1469120 1469121 1471852
Blocks:	1468570
	Show dependency tree / graph

Reported:	2017-07-07 05:01 EDT by Adam Mariš
Modified:	2017-08-02 05:46 EDT (History)
CC List:	6 users (show)

See Also:
Fixed In Version:	freeradius 2.2.10
Doc Type:	If docs needed, set a value
Doc Text:	A memory leak flaw was found in the way FreeRADIUS server handles decoding of DHCP packets. A remote attacker could use this flaw to cause the FreeRADIUS server to consume an increasing amount of memory resources over time possibly leading to a crash due to memory exhaustion.
Story Points:	---
Clone Of:
Environment:
Last Closed:	2017-08-02 05:37:51 EDT
Type:	---
Regression:	---
Mount Type:	---
Documentation:	---
CRM:
Verified Versions:
Category:	---
oVirt Team:	---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---

Attachments	(Terms of Use)
Proposed patch (755 bytes, patch) 2017-07-07 08:14 EDT, Adam Mariš	no flags	Details \| Diff
Add an attachment (proposed patch, testcase, etc.)

External Trackers
Tracker	ID	Priority	Status	Summary	Last Updated
Red Hat Product Errata	RHSA-2017:1759	normal	SHIPPED_LIVE	Important: freeradius security update	2017-07-18 03:41:08 EDT

Groups: None (edit)

Description Adam Mariš 2017-07-07 05:01:09 EDT

It was discovered that decode_tlv() function leaked memory in certain circumstances.

The security impact is denial of service by any network device capable of sending DHCP packets to FreeRADIUS, which sends option 82 with multiple sub-options.

Affected versions: 2.0.0 through 2.2.9, inclusive.

Comment 1 Adam Mariš 2017-07-07 05:01:15 EDT

Acknowledgments:

Name: the FreeRADIUS project
Upstream: Guido Vranken

Comment 2 Adam Mariš 2017-07-07 08:14 EDT

Created attachment 1295280 [details]
Proposed patch

Comment 6 Dhiru Kholia 2017-07-17 10:32:40 EDT

Created freeradius tracking bugs for this issue:

Affects: fedora-all [bug 1471852]

Comment 7 errata-xmlrpc 2017-07-17 23:42:08 EDT

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 6

Via RHSA-2017:1759 https://access.redhat.com/errata/RHSA-2017:1759

Comment 8 Dhiru Kholia 2017-08-02 05:46:21 EDT

External References:

http://freeradius.org/security/fuzzer-2017.html

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