Bug 743758 (CVE-2011-3605)

Summary:	CVE-2011-3605 radvd: temporary denial of service flaw in process_rs()
Product:	[Other] Security Response	Reporter:	Vincent Danen <vdanen>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED WONTFIX	QA Contact:
Severity:	low	Docs Contact:
Priority:	low
Version:	unspecified	CC:	aglotov, herrold, security-response-team
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2019-06-10 10:58:03 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:	744116, 744119, 744120, 744121, 744122, 744123
Bug Blocks:	743759

Description Vincent Danen 2011-10-05 21:58:58 UTC

A temporary denial of service flaw was found in radvd's process_rs() function, where it would call mdelay() on the same thread in which it handled all input.  If ->UnicastOnly were set, an attacker could cause a flood with ND_ROUTER_SOLICIT and fill the input queue of the daemon.  This would cause a brief outage of approximately MAX_RA_DELAY_TIME / 2 * sizeof_input_queue when handling new clients, where MAX_RA_DELAY_TIME is 500ms, leading to delays of more than a minute.  Note: this is only the case in unicast-only mode; there is no denial of service in the (normal, default) anycast mode. (CVE-2011-3605)

This is corrected in upstream git [1].

[1] https://github.com/reubenhwk/radvd/commit/2591d0189257caeaae2057dfed0a260310497a61

Acknowledgements:

Red Hat would like to thank Vasiliy Kulikov of Openwall for reporting this issue.

Comment 1 Huzaifa S. Sidhpurwala 2011-10-07 05:33:36 UTC

This issue affects the version of radvd as shipped with Red Hat Enterprise
Linux 4, 5 and 6.

This issue affects the version of radvd as shipped with Fedora 14 and 15.

Comment 2 Huzaifa S. Sidhpurwala 2011-10-07 05:33:57 UTC

Public via:
http://thread.gmane.org/gmane.comp.security.oss.general/5973

Comment 3 Huzaifa S. Sidhpurwala 2011-10-07 05:38:17 UTC

Created radvd tracking bugs for this issue

Affects: fedora-all [bug 744116]

Comment 6 Fedora Update System 2011-10-27 03:55:32 UTC

radvd-1.8.2-2.fc15 has been pushed to the Fedora 15 stable repository.  If problems still persist, please make note of it in this bug report.

Comment 7 Fedora Update System 2011-10-27 03:57:01 UTC

radvd-1.8.2-2.fc14 has been pushed to the Fedora 14 stable repository.  If problems still persist, please make note of it in this bug report.

Comment 8 Fedora Update System 2011-10-28 17:22:42 UTC

radvd-1.8.2-2.fc15 has been pushed to the Fedora 15 stable repository.  If problems still persist, please make note of it in this bug report.

Comment 9 Fedora Update System 2011-10-28 17:23:33 UTC

radvd-1.8.2-2.fc14 has been pushed to the Fedora 14 stable repository.  If problems still persist, please make note of it in this bug report.

Comment 10 Fedora Update System 2011-11-05 01:31:25 UTC

radvd-1.8.2-2.fc16 has been pushed to the Fedora 16 stable repository.  If problems still persist, please make note of it in this bug report.