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Bug 599066 - ISC DHCP 4.1.1-P1 contains a pair of bug fixes including one for a security related bug
Summary: ISC DHCP 4.1.1-P1 contains a pair of bug fixes including one for a security r...
Alias: None
Product: Red Hat Enterprise Linux 6
Classification: Red Hat
Component: dhcp
Version: 6.0
Hardware: All
OS: Linux
Target Milestone: rc
: ---
Assignee: Jiri Popelka
QA Contact: Release Test Team
Depends On:
TreeView+ depends on / blocked
Reported: 2010-06-02 15:45 UTC by Jiri Popelka
Modified: 2010-11-10 20:11 UTC (History)
3 users (show)

Fixed In Version: dhcp-4.1.1-11.P1.el6
Doc Type: Rebase: Bug Fixes and Enhancements
Doc Text:
Clone Of:
Last Closed: 2010-11-10 20:11:52 UTC
Target Upstream Version:

Attachments (Terms of Use)
Fixes for [ISC-Bugs #21152] and [ISC-Bugs #21253] (deleted)
2010-06-02 15:45 UTC, Jiri Popelka
jpopelka: review? (vcrhonek)
Details | Diff

Description Jiri Popelka 2010-06-02 15:45:55 UTC
Created attachment 419080 [details]
Fixes for [ISC-Bugs #21152] and [ISC-Bugs #21253]

ISC DHCP 4.1.1-P1 is a patch release of ISC DHCP 4.1.1,
which contains a pair of bug fixes including
one for a security related bug.
- A bug was fixed that could cause the DHCPv6 server to advertise/assign a
  previously allocated (active) lease to a client that has changed subnets,
  despite being on different shared networks.  Dynamic prefixes specifically
  allocated in shared networks also now are not offered if the client has
  moved.  [ISC-Bugs #21152]

! Accept a client id of length 0 while hashing.  Previously the server would
  exit if it attempted to hash a zero length client id, providing attackers
  with a simple denial of service attack.  [ISC-Bugs #21253]

Version-Release number of selected component (if applicable):

Comment 1 RHEL Product and Program Management 2010-06-02 15:50:31 UTC
This request was evaluated by Red Hat Product Management for inclusion in a Red
Hat Enterprise Linux major release.  Product Management has requested further
review of this request by Red Hat Engineering, for potential inclusion in a Red
Hat Enterprise Linux Major release.  This request is not yet committed for

Comment 2 Jiri Popelka 2010-06-02 17:50:03 UTC
I'm not sure how to reproduce those two bugs.
I was unsuccessful in configuring client to send zero length client ID ([ISC-Bugs #21253]).
send dhcp-client-identifier "";
or something similar into dhclient.conf doesn't work.

Additional info:

Comment 6 Jiri Popelka 2010-06-04 11:37:43 UTC
Fixed in dhcp-4.1.1-11.P1.el6

Comment 8 2010-11-10 20:11:52 UTC
Red Hat Enterprise Linux 6.0 is now available and should resolve
the problem described in this bug report. This report is therefore being closed
with a resolution of CURRENTRELEASE. You may reopen this bug report if the
solution does not work for you.

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