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Debian Security Advisory DSA 102-2                     security@debian.org

http://www.debian.org/security/                             Martin Schulze

January 18th, 2002  

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Package        : at

Vulnerability  : daemon exploit

Problem-Type   : local

Debian-specific: no



Basically, this is the same Security Advisory as DSA 102-1, except

that the uploaded binary packages really fix the problem this time.

Unfortunately the bugfix from DSA 102-1 wasn't propagated properly due

to a packaging bug.  While the file parsetime.y was fixed, and

yy.tab.c should be generated from it, yy.tab.c from the original

source was still used.  This has been fixed now.



The original advisory said:



zen-parse found a bug in the current implementation of at which leads

into a heap corruption vulnerability which in turn could potentially

lead into an exploit of the daemon user.



This has been fixed in at 3.1.8-10.2 for the stable Debian release and

3.1.8-11 for the unstable and testing release.  Packages for unstable

have just been uploaded into <http://incoming.debian.org/>.  We

recommend that you upgrade your at packages immediately since an

exploit has already been published.



wget url

	will fetch the file for you

dpkg -i file.deb

        will install the referenced file.



If you are using the apt-get package manager, use the line for

sources.list as given below:



apt-get update

        will update the internal database

apt-get upgrade

        will install corrected packages



You may use an automated update by adding the resources from the

footer to the proper configuration.





Debian GNU/Linux 2.2 alias potato

------------------------------------



  Source archives:



    at_3.1.8-10.2.dsc
      MD5 checksum: 9375f0d34c84c87a80a161ee40dde042

    at_3.1.8-10.2.diff.gz
      MD5 checksum: 08d299a876e16819f4b93c9c7254e743

    at_3.1.8.orig.tar.gz
      MD5 checksum: 1e83522666118b3eab4cb8e345e6da5a



  Alpha architecture:



    at_3.1.8-10.2_alpha.deb
      MD5 checksum: 9d05ea0036ec9bb6dc9181cce75816b6



  ARM architecture:



    at_3.1.8-10.2_arm.deb
      MD5 checksum: 2e969a1f2e138b5484d7a7e57fd57f28



  Intel ia32 architecture:



    at_3.1.8-10.2_i386.deb
      MD5 checksum: 3bd377404b28aafe13d9f4640fa82daf



  Motorola 680x0 architecture:



    at_3.1.8-10.2_m68k.deb
      MD5 checksum: e882ac1a01fe4cba4f173ae037f45578



  PowerPC architecture:



    at_3.1.8-10.2_powerpc.deb
      MD5 checksum: 62b2b344129a9ef92f53fceca0ad000a



  Sun Sparc architecture:



    at_3.1.8-10.2_sparc.deb
      MD5 checksum: f7f14d76692d28d70c494ee32273a449





  These files will probably be moved into the stable distribution on

  its next revision.



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For apt-get: deb http://security.debian.org/ stable/updates main

For dpkg-ftp: ftp://security.debian.org/debian-securitydists/stable/updates/main

Mailing list: debian-security-announce@lists.debian.org

Package info: `apt-cache show <pkg>' and http://packages.debian.org/<pkg>



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