Bug 743758 (CVE-2011-3605) - CVE-2011-3605 radvd: temporary denial of service flaw in process_rs()
Summary: CVE-2011-3605 radvd: temporary denial of service flaw in process_rs()
Keywords:
Status: CLOSED WONTFIX
Alias: CVE-2011-3605
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
low
low
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 744116 744119 744120 744121 744122 744123
Blocks: 743759
TreeView+ depends on / blocked
 
Reported: 2011-10-05 21:58 UTC by Vincent Danen
Modified: 2021-02-24 14:34 UTC (History)
3 users (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Clone Of:
Environment:
Last Closed: 2019-06-10 10:58:03 UTC


Attachments (Terms of Use)

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.


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