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HistoryDec 11, 2007 - 10:22 p.m.

[SECURITY] [DSA 1430-1] New libnss-ldap packages fix denial of service

2007-12-1122:22:13
lists.debian.org
19

CVSS2

4.3

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

NONE

Availability Impact

NONE

AV:N/AC:M/Au:N/C:P/I:N/A:N

AI Score

6

Confidence

Low

EPSS

0.011

Percentile

84.7%


Debian Security Advisory DSA-1430-1 [email protected]
http://www.debian.org/security/ Steve Kemp
December 11, 2007 http://www.debian.org/security/faq


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:

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

alpha architecture (DEC Alpha)

http://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))

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

arm architecture (ARM)

http://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)

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

i386 architecture (Intel ia32)

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

ia64 architecture (Intel ia64)

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

m68k architecture (Motorola Mc680x0)

http://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))

http://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))

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

powerpc architecture (PowerPC)

http://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)

http://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)

http://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:

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

alpha architecture (DEC Alpha)

http://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))

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

arm architecture (ARM)

http://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)

http://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)

http://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)

http://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))

http://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))

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

powerpc architecture (PowerPC)

http://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)

http://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)

http://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.


For apt-get: deb http://security.debian.org/ stable/updates main
For dpkg-ftp: ftp://security.debian.org/debian-security dists/stable/updates/main
Mailing list: [email protected]
Package info: `apt-cache show <pkg>' and http://packages.debian.org/&lt;pkg&gt;

CVSS2

4.3

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

NONE

Availability Impact

NONE

AV:N/AC:M/Au:N/C:P/I:N/A:N

AI Score

6

Confidence

Low

EPSS

0.011

Percentile

84.7%