Linux Security
Linux Security
Linux Security

Debian: dhcp-client vulnerability

Date 28 Jul 2000
Posted By LinuxSecurity Advisories
Remote root exploit present in dhcp-client in debian 2.1 and 2.2.

- ------------------------------------------------------------------------
Debian Security Advisory                             This email address is being protected from spambots. You need JavaScript enabled to view it.                            Michael Stone
July 28, 2000
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Package: dhcp-client-beta (dhcp-client)
Vulnerability type: remote root exploit
Debian-specific: no

The versions of the ISC DHCP client in debian 2.1 (slink) and debian 2.2
(potato) are vulnerable to a root exploit. The OpenBSD team reports that
the client inappropriately executes commands embedded in replies sent
from a dhcp server. This means that a malicious dhcp server can execute
commands on the client with root privilages. A previous Debian security
advisory addressed this issue with package versions 2.0b1pl6-0.3 and
2.0-3potato1, but ISC has released a newer patch since the original
advisory. You should install the latest packages even if you upgraded
when the last advisory was released.

The reported vulnerability is fixed in the package dhcp-client-beta
2.0b1pl6-0.4 for the current stable release (debian 2.1) and in
dhcp-client 2.0-3potato2 for the frozen pre-release (debian 2.2). The
dhcp server and relay agents are built from the same source as the
client; however, the server and relay agents are not vulnerable to this
issue and do not need to be upgraded.  We recommend upgrading your
dhcp-client-beta and dhcp-client immediately.

wget url
        will fetch the file for you
dpkg -i file.deb
        will install the referenced file.

Debian GNU/Linux 2.1 alias slink
- --------------------------------

  This version of Debian was released only for Intel ia32, the Motorola
  680x0, the alpha and the Sun sparc architecture.

  Source archives:
      MD5 checksum: a6cb2d3ada66ce5ee6265cae14babcc7
      MD5 checksum: 148ec8de443e27a7df1c1c9343240a18
      MD5 checksum: 2b63a90b272f087afb24c8f4ca72d3bd

  Alpha architecture:
      MD5 checksum: 16953e78d254b09c0e5ae4437435dc7f
      MD5 checksum: 357ec5766a1ec1807fd5180cb9529c23
      MD5 checksum: 1b716855998f390c1e5b556f3fd8d011

  Intel ia32 architecture:
      MD5 checksum: dcd16de60fb440d49937b76db3c512b9
      MD5 checksum: c3c5fdbdfe28ed7ebfe4acdf793d2b32
      MD5 checksum: 48f4e09491bf4ecfd8ca041ec5630191

  Motorola 680x0 architecture:
      MD5 checksum: 979348386229afd7cda4c265c5a96b46
      MD5 checksum: 3f2d639eb5c8c7b997aaaf309f5f5253
      MD5 checksum: c5853a4ee1318f2cf0f9eafd8025375d

  Sun Sparc architecture:
      MD5 checksum: 2f2c21e092ea15cf57eb6bdf3dff7c5d
      MD5 checksum: 31b4b29303e4fca6166060635a22b169
      MD5 checksum: 9f4fc4b7a26b9dd725387873cd808d05

  These files will be moved into*/binary-$arch/ soon.

Debian GNU/Linux 2.2 alias potato
- ---------------------------------

  Please note that woody has not been released yet. However since potato
  is very close to being released security updates are already being
  made available on 
  Updates have been prepared for alpha, ia32, and sparc. These and other
  architectures will be included in the main potato distribution shortly.

  Source archives:
      MD5 checksum: 23247550b0e3e63d5c9c80a5ae10eed3
      MD5 checksum: 6af12e7b4993568ddfe41427c1c90b5e
      MD5 checksum: eff5d5359a50f878e4c0da082bf10475

  Alpha architecture:
      MD5 checksum: a7fef01c210b86218fcee724a2f1b72f
      MD5 checksum: 9b48d7941658b015564a7892c2cc7c07
      MD5 checksum: 9c169dfd5a9fd38649a71faed211e61d

  Intel ia32 architecture:
      MD5 checksum: a124872fc1fb2fe7297f3d8cec5e8b37
      MD5 checksum: 608f3b10ee1c628f8bb89c19e1bf4e73
      MD5 checksum: be49880f6f81b3dcce7b1344f816b48e

  Sun Sparc architecture:
      MD5 checksum: ee6122bbb20f97e82e24dd20e5c073a9
      MD5 checksum: 3bd860486c270ed3c16424f4ad2ed989
      MD5 checksum: 445cad98027354c65d931b73b806f212

For not yet released architectures please refer to the appropriate
directory$arch/ .

Version: 2.6.3ia
Charset: noconv


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