Linux Security
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Linux Security

Debian: New libnss-ldap packages fix denial of service

Date 11 Dec 2007
2867
Posted By LinuxSecurity Advisories
It was reported that a race condition exists in libnss-ldap, an NSS module for using LDAP as a naming service, which could cause denial of service attacks when applications use pthreads.
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Debian Security Advisory DSA-1430-1                  This email address is being protected from spambots. You need JavaScript enabled to view it.
https://www.debian.org/security/                               Steve Kemp
December 11, 2007                     https://www.debian.org/security/faq
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Package        : libnss-ldap
Vulnerability  : denial of service
Problem type   : local
Debian-specific: no
CVE Id(s)      : CVE-2007-5794
Debian Bug     : 453868

It was reported that a race condition exists in libnss-ldap, an
NSS module for using LDAP as a naming service, which could cause
denial of service attacks when applications use pthreads.

This problem was spotted in the dovecot IMAP/POP server but
potentially affects more programs.

For the stable distribution (etch), this problem has been fixed in version
251-7.5etch1.

For the old stable distribution (sarge), this problem has been fixed in
version 238-1sarge1.

For the unstable distribution (sid), this problem has been fixed in
version 256-1.

We recommend that you upgrade your libnss-ldap package.


Upgrade instructions
- --------------------

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 3.1 alias sarge
- --------------------------------

Source archives:

  https://security.debian.org/pool/updates/main/libn/libnss-ldap/libnss-ldap_238.orig.tar.gz
    Size/MD5 checksum:   219945 97fd929b381329b972b3c3ddca5a4bbf
  https://security.debian.org/pool/updates/main/libn/libnss-ldap/libnss-ldap_238-1sarge1.diff.gz
    Size/MD5 checksum:    26236 c7191ee3845dc23ccf2712e78daed8f1
  https://security.debian.org/pool/updates/main/libn/libnss-ldap/libnss-ldap_238-1sarge1.dsc
    Size/MD5 checksum:      681 3176fefa1d8d04afa9d3b458e40694a6

alpha architecture (DEC Alpha)

  https://security.debian.org/pool/updates/main/libn/libnss-ldap/libnss-ldap_238-1sarge1_alpha.deb
    Size/MD5 checksum:    86756 30a9c1691dcec614e36fdea923ba3906

amd64 architecture (AMD x86_64 (AMD64))

  https://security.debian.org/pool/updates/main/libn/libnss-ldap/libnss-ldap_238-1sarge1_amd64.deb
    Size/MD5 checksum:    80218 18d9da468326040f466c10cac6f50734

arm architecture (ARM)

  https://security.debian.org/pool/updates/main/libn/libnss-ldap/libnss-ldap_238-1sarge1_arm.deb
    Size/MD5 checksum:    79216 adf473266dd1de600cc0360f697ec7d2

hppa architecture (HP PA RISC)

  https://security.debian.org/pool/updates/main/libn/libnss-ldap/libnss-ldap_238-1sarge1_hppa.deb
    Size/MD5 checksum:    86324 f98ade45a20c5426ef30cb1290e34164

i386 architecture (Intel ia32)

  https://security.debian.org/pool/updates/main/libn/libnss-ldap/libnss-ldap_238-1sarge1_i386.deb
    Size/MD5 checksum:    78894 7bb744d57899867a0b1c326372de76ce

ia64 architecture (Intel ia64)

  https://security.debian.org/pool/updates/main/libn/libnss-ldap/libnss-ldap_238-1sarge1_ia64.deb
    Size/MD5 checksum:    91930 d25cce59d45f8b8dc90b0fe3fcbf3ce0

m68k architecture (Motorola Mc680x0)

  https://security.debian.org/pool/updates/main/libn/libnss-ldap/libnss-ldap_238-1sarge1_m68k.deb
    Size/MD5 checksum:    76894 3c574bc294eb02c337664de43e814f7f

mips architecture (MIPS (Big Endian))

  https://security.debian.org/pool/updates/main/libn/libnss-ldap/libnss-ldap_238-1sarge1_mips.deb
    Size/MD5 checksum:    80482 0e54d051dde87e3b7984650c47bc3b3e

mipsel architecture (MIPS (Little Endian))

  https://security.debian.org/pool/updates/main/libn/libnss-ldap/libnss-ldap_238-1sarge1_mipsel.deb
    Size/MD5 checksum:    80594 9f3f4b5d6d7c9e6f84edd9ab40767e04

powerpc architecture (PowerPC)

  https://security.debian.org/pool/updates/main/libn/libnss-ldap/libnss-ldap_238-1sarge1_powerpc.deb
    Size/MD5 checksum:    81652 7ca152887a041fc3dc674a77e707d23f

s390 architecture (IBM S/390)

  https://security.debian.org/pool/updates/main/libn/libnss-ldap/libnss-ldap_238-1sarge1_s390.deb
    Size/MD5 checksum:    83806 eab2386a51d35e31a4dd7fd0ed832a6d

sparc architecture (Sun SPARC/UltraSPARC)

  https://security.debian.org/pool/updates/main/libn/libnss-ldap/libnss-ldap_238-1sarge1_sparc.deb
    Size/MD5 checksum:    79224 7d2ec91b89037fd137e98d3640ba1bb4


Debian GNU/Linux 4.0 alias etch
- -------------------------------

Source archives:

  https://security.debian.org/pool/updates/main/libn/libnss-ldap/libnss-ldap_251-7.5etch1.diff.gz
    Size/MD5 checksum:   149322 04aa24732e69f40e5c3ab629b7e412d4
  https://security.debian.org/pool/updates/main/libn/libnss-ldap/libnss-ldap_251.orig.tar.gz
    Size/MD5 checksum:   228931 a80718b3f7cf46f2579a26f9d6fbcd46
  https://security.debian.org/pool/updates/main/libn/libnss-ldap/libnss-ldap_251-7.5etch1.dsc
    Size/MD5 checksum:      683 007acb586d8bf61058c446a08aae4804

alpha architecture (DEC Alpha)

  https://security.debian.org/pool/updates/main/libn/libnss-ldap/libnss-ldap_251-7.5etch1_alpha.deb
    Size/MD5 checksum:   108812 1150911f5446d2bc7838fd3d9d56329d

amd64 architecture (AMD x86_64 (AMD64))

  https://security.debian.org/pool/updates/main/libn/libnss-ldap/libnss-ldap_251-7.5etch1_amd64.deb
    Size/MD5 checksum:   105206 7f2e2292e5c213a4d59e0c7240a9ca7e

arm architecture (ARM)

  https://security.debian.org/pool/updates/main/libn/libnss-ldap/libnss-ldap_251-7.5etch1_arm.deb
    Size/MD5 checksum:   103946 bb4984bf517834f0278f00e8ba32a4ba

hppa architecture (HP PA RISC)

  https://security.debian.org/pool/updates/main/libn/libnss-ldap/libnss-ldap_251-7.5etch1_hppa.deb
    Size/MD5 checksum:   111288 2a7f758efdf03c296b2feea08205cdc7

i386 architecture (Intel ia32)

  https://security.debian.org/pool/updates/main/libn/libnss-ldap/libnss-ldap_251-7.5etch1_i386.deb
    Size/MD5 checksum:   103732 0f29d1991d204b4a710e5f74bf056984

ia64 architecture (Intel ia64)

  https://security.debian.org/pool/updates/main/libn/libnss-ldap/libnss-ldap_251-7.5etch1_ia64.deb
    Size/MD5 checksum:   120362 e5649299793b90c3987305ac2212afad

mips architecture (MIPS (Big Endian))

  https://security.debian.org/pool/updates/main/libn/libnss-ldap/libnss-ldap_251-7.5etch1_mips.deb
    Size/MD5 checksum:   105148 1f42e34610dc974a6a5ff19a2dff1b24

mipsel architecture (MIPS (Little Endian))

  https://security.debian.org/pool/updates/main/libn/libnss-ldap/libnss-ldap_251-7.5etch1_mipsel.deb
    Size/MD5 checksum:   105360 af1ff4fd5a543b50f704a022798ebed0

powerpc architecture (PowerPC)

  https://security.debian.org/pool/updates/main/libn/libnss-ldap/libnss-ldap_251-7.5etch1_powerpc.deb
    Size/MD5 checksum:   106458 13b702d831bde6e52507fdd466573122

s390 architecture (IBM S/390)

  https://security.debian.org/pool/updates/main/libn/libnss-ldap/libnss-ldap_251-7.5etch1_s390.deb
    Size/MD5 checksum:   108466 10bc9129adbc56dd6c75569fc27a221c

sparc architecture (Sun SPARC/UltraSPARC)

  https://security.debian.org/pool/updates/main/libn/libnss-ldap/libnss-ldap_251-7.5etch1_sparc.deb
    Size/MD5 checksum:   103134 12c84546a715bca647b86943a226b361


  These files will probably be moved into the stable distribution on
  its next update.

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For apt-get: deb https://security.debian.org/ stable/updates main
For dpkg-ftp: ftp://security.debian.org/debian-security dists/stable/updates/main
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