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Debian: 'rxvt' buffer overflow vulnerability Print E-mail
User Rating:      How can I rate this item?
Posted by LinuxSecurity.com Team   
Debian Since rxvt is installed sgid utmp an attacker could use thisto gain utmp which would allow him to modify the utmp file.

------------------------------------------------------------------------
Debian Security Advisory DSA-062-1                   security@debian.org 
http://www.debian.org/security/                         Wichert Akkerman
June 16, 2001
------------------------------------------------------------------------


Package        : rxvt
Problem type   : buffer overflow
Debian-specific: no

Samuel Dralet reported on bugtraq that version 2.6.2 of rxvt (a
VT102 terminal emulator for X) have a buffer overflow in the
tt_printf() function. A local user could abuse this making rxvt
print a special string using that function, for example by using
the -T or -name command-line options. That string would cause a
stack overflow and contain code which rxvt will execute.

Since rxvt is installed sgid utmp an attacker could use this
to gain utmp which would allow him to modify the utmp file.

This has been fixed in version 2.6.2-2.1, and we recommend that
you upgrade your rxvt package.

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


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

  Potato was released for alpha, arm, i386, m68k, powerpc and sparc.

  Source archives:
     http://security.debian.org/dists/stable/updates/main/source/rxvt_2.6.2-2.1.diff.gz
      MD5 checksum: 2f0bc5f6be93de9058b70aa798e3107b
     http://security.debian.org/dists/stable/updates/main/source/rxvt_2.6.2-2.1.dsc
      MD5 checksum: cb15b91b306310b3a14b2530bedb45ce
     http://security.debian.org/dists/stable/updates/main/source/rxvt_2.6.2.orig.tar.gz
      MD5 checksum: f1866fd8d7c6b92d0f5b11ccbe348f73

  Alpha architecture:
     http://security.debian.org/dists/stable/updates/main/binary-alpha/rxvt-ml_2.6.2-2.1_alpha.deb
      MD5 checksum: ea3b35ff253c79b3a83ecfe837fe0189
     http://security.debian.org/dists/stable/updates/main/binary-alpha/rxvt_2.6.2-2.1_alpha.deb
      MD5 checksum: 4d4bce3b3632b2391ce282c67034d558

  ARM architecture:
     http://security.debian.org/dists/stable/updates/main/binary-arm/rxvt-ml_2.6.2-2.1_arm.deb
      MD5 checksum: 94e13605d75cf071ef22e320c2a841d6
     http://security.debian.org/dists/stable/updates/main/binary-arm/rxvt_2.6.2-2.1_arm.deb
      MD5 checksum: 3f45cc0c414874c9065b2c21e174ef3c

  Intel IA-32 architecture:
     http://security.debian.org/dists/stable/updates/main/binary-i386/rxvt-ml_2.6.2-2.1_i386.deb
      MD5 checksum: 1d6ad4bcaca88243f83a9cfa0b5d6753
     http://security.debian.org/dists/stable/updates/main/binary-i386/rxvt_2.6.2-2.1_i386.deb
      MD5 checksum: 30c7114e67c17a47c4ac8abf15ded74e

  Motorola 680x0 architecture:
     http://security.debian.org/dists/stable/updates/main/binary-m68k/rxvt-ml_2.6.2-2.1_m68k.deb
      MD5 checksum: 9fd344e418b551535facc6ae7a9484ba
     http://security.debian.org/dists/stable/updates/main/binary-m68k/rxvt_2.6.2-2.1_m68k.deb
      MD5 checksum: bded59c5b4061dab92c907a9df2db259

  PowerPC architecture:
     http://security.debian.org/dists/stable/updates/main/binary-powerpc/rxvt-ml_2.6.2-2.1_powerpc.deb
      MD5 checksum: c5f20b67ceb084d1e1226f52a1a8cda1
     http://security.debian.org/dists/stable/updates/main/binary-powerpc/rxvt_2.6.2-2.1_powerpc.deb
      MD5 checksum: 48566b5a60f937bfd0b1a54ac09dd081

  Sun Sparc architecture:
     http://security.debian.org/dists/stable/updates/main/binary-sparc/rxvt-ml_2.6.2-2.1_sparc.deb
      MD5 checksum: 29074cfb3a849199500192eca0fc650b
     http://security.debian.org/dists/stable/updates/main/binary-sparc/rxvt_2.6.2-2.1_sparc.deb
      MD5 checksum: d501d5de8283d33a1915c0b52dd33c28

  These packages will be moved into the stable distribution on its next
  revision.

For not yet released architectures please refer to the appropriate
directory  ftp://ftp.debian.org/debian/dists/sid/binary-$arch/ .

--
----------------------------------------------------------------------------
apt-get: deb  http://security.debian.org/ stable/updates main
dpkg-ftp:  ftp://security.debian.org/debian-security dists/stable/updates/main
Mailing list: debian-security-announce@lists.debian.org


 
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