DSA-1430-1 libnss-ldap -- denial of service

Debian Security Advisory

DSA-1430-1 libnss-ldap -- denial of service

Date Reported:

11 Dec 2007

Affected Packages:

libnss-ldap

Vulnerable:

Yes

Security database references:

In the Debian bugtracking system: Bug 453868.
In Mitre's CVE dictionary: CVE-2007-5794.

More information:

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 if applications use pthreads.

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

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

For the stable distribution (etch), this problem has been fixed in version 251-7.5etch4.

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

We recommend that you upgrade your libnss-ldap package.

Fixed in:

Debian GNU/Linux 3.1 (sarge)

Source:

http://security.debian.org/pool/updates/main/libn/libnss-ldap/libnss-ldap_238.orig.tar.gz

http://security.debian.org/pool/updates/main/libn/libnss-ldap/libnss-ldap_238-1sarge1.diff.gz

http://security.debian.org/pool/updates/main/libn/libnss-ldap/libnss-ldap_238-1sarge1.dsc

Alpha:

http://security.debian.org/pool/updates/main/libn/libnss-ldap/libnss-ldap_238-1sarge1_alpha.deb

AMD64:

http://security.debian.org/pool/updates/main/libn/libnss-ldap/libnss-ldap_238-1sarge1_amd64.deb

ARM:

http://security.debian.org/pool/updates/main/libn/libnss-ldap/libnss-ldap_238-1sarge1_arm.deb

HP Precision:

http://security.debian.org/pool/updates/main/libn/libnss-ldap/libnss-ldap_238-1sarge1_hppa.deb

Intel IA-32:

http://security.debian.org/pool/updates/main/libn/libnss-ldap/libnss-ldap_238-1sarge1_i386.deb

Intel IA-64:

http://security.debian.org/pool/updates/main/libn/libnss-ldap/libnss-ldap_238-1sarge1_ia64.deb

Motorola 680x0:

http://security.debian.org/pool/updates/main/libn/libnss-ldap/libnss-ldap_238-1sarge1_m68k.deb

Big-endian MIPS:

http://security.debian.org/pool/updates/main/libn/libnss-ldap/libnss-ldap_238-1sarge1_mips.deb

Little-endian MIPS:

http://security.debian.org/pool/updates/main/libn/libnss-ldap/libnss-ldap_238-1sarge1_mipsel.deb

PowerPC:

http://security.debian.org/pool/updates/main/libn/libnss-ldap/libnss-ldap_238-1sarge1_powerpc.deb

IBM S/390:

http://security.debian.org/pool/updates/main/libn/libnss-ldap/libnss-ldap_238-1sarge1_s390.deb

Sun Sparc:

http://security.debian.org/pool/updates/main/libn/libnss-ldap/libnss-ldap_238-1sarge1_sparc.deb

Debian GNU/Linux 4.0 (etch)

Source:

http://security.debian.org/pool/updates/main/libn/libnss-ldap/libnss-ldap_251-7.5etch4.diff.gz

http://security.debian.org/pool/updates/main/libn/libnss-ldap/libnss-ldap_251.orig.tar.gz

http://security.debian.org/pool/updates/main/libn/libnss-ldap/libnss-ldap_251-7.5etch4.dsc

Alpha:

http://security.debian.org/pool/updates/main/libn/libnss-ldap/libnss-ldap_251-7.5etch4_alpha.deb

AMD64:

http://security.debian.org/pool/updates/main/libn/libnss-ldap/libnss-ldap_251-7.5etch4_amd64.deb

ARM:

http://security.debian.org/pool/updates/main/libn/libnss-ldap/libnss-ldap_251-7.5etch4_arm.deb

HP Precision:

http://security.debian.org/pool/updates/main/libn/libnss-ldap/libnss-ldap_251-7.5etch4_hppa.deb

Intel IA-32:

http://security.debian.org/pool/updates/main/libn/libnss-ldap/libnss-ldap_251-7.5etch4_i386.deb

Intel IA-64:

http://security.debian.org/pool/updates/main/libn/libnss-ldap/libnss-ldap_251-7.5etch4_ia64.deb

Big-endian MIPS:

http://security.debian.org/pool/updates/main/libn/libnss-ldap/libnss-ldap_251-7.5etch4_mips.deb

Little-endian MIPS:

http://security.debian.org/pool/updates/main/libn/libnss-ldap/libnss-ldap_251-7.5etch4_mipsel.deb

PowerPC:

http://security.debian.org/pool/updates/main/libn/libnss-ldap/libnss-ldap_251-7.5etch4_powerpc.deb

IBM S/390:

http://security.debian.org/pool/updates/main/libn/libnss-ldap/libnss-ldap_251-7.5etch4_s390.deb

Sun Sparc:

http://security.debian.org/pool/updates/main/libn/libnss-ldap/libnss-ldap_251-7.5etch4_sparc.deb

MD5 checksums of the listed files are available in the original advisory.