Debian Security Advisory

DSA-1795-1 ldns -- buffer overflow

Date Reported:
07 May 2009
Affected Packages:
ldns
Vulnerable:
Yes
Security database references:
In Mitre's CVE dictionary: CVE-2009-1086.
More information:

Stefan Kaltenbrunner discovered that ldns, a library and set of utilities to facilitate DNS programming, did not correctly implement a buffer boundary check in its RR DNS record parser. This weakness could enable overflow of a heap buffer if a maliciously-crafted record is parsed, potentially allowing the execution of arbitrary code. The scope of compromise will vary with the context in which ldns is used, and could present either a local or remote attack vector.

The old stable distribution (etch) is not affected by this issue.

For the stable distribution (lenny), this problem has been fixed in version 1.4.0-1+lenny1.

For the unstable distribution (sid), this problem was fixed in version 1.5.1-1.

We recommend that you upgrade your ldns packages.

Fixed in:

Debian GNU/Linux 5.0 (lenny)

Source:
http://security.debian.org/pool/updates/main/l/ldns/ldns_1.4.0.orig.tar.gz
http://security.debian.org/pool/updates/main/l/ldns/ldns_1.4.0-1+lenny1.diff.gz
http://security.debian.org/pool/updates/main/l/ldns/ldns_1.4.0-1+lenny1.dsc
Alpha:
http://security.debian.org/pool/updates/main/l/ldns/ldnsutils_1.4.0-1+lenny1_alpha.deb
http://security.debian.org/pool/updates/main/l/ldns/libldns-dev_1.4.0-1+lenny1_alpha.deb
http://security.debian.org/pool/updates/main/l/ldns/libldns1_1.4.0-1+lenny1_alpha.deb
AMD64:
http://security.debian.org/pool/updates/main/l/ldns/libldns-dev_1.4.0-1+lenny1_amd64.deb
http://security.debian.org/pool/updates/main/l/ldns/libldns1_1.4.0-1+lenny1_amd64.deb
http://security.debian.org/pool/updates/main/l/ldns/ldnsutils_1.4.0-1+lenny1_amd64.deb
ARM:
http://security.debian.org/pool/updates/main/l/ldns/libldns-dev_1.4.0-1+lenny1_arm.deb
http://security.debian.org/pool/updates/main/l/ldns/ldnsutils_1.4.0-1+lenny1_arm.deb
http://security.debian.org/pool/updates/main/l/ldns/libldns1_1.4.0-1+lenny1_arm.deb
ARM EABI:
http://security.debian.org/pool/updates/main/l/ldns/libldns1_1.4.0-1+lenny1_armel.deb
http://security.debian.org/pool/updates/main/l/ldns/libldns-dev_1.4.0-1+lenny1_armel.deb
http://security.debian.org/pool/updates/main/l/ldns/ldnsutils_1.4.0-1+lenny1_armel.deb
HP Precision:
http://security.debian.org/pool/updates/main/l/ldns/libldns1_1.4.0-1+lenny1_hppa.deb
http://security.debian.org/pool/updates/main/l/ldns/libldns-dev_1.4.0-1+lenny1_hppa.deb
http://security.debian.org/pool/updates/main/l/ldns/ldnsutils_1.4.0-1+lenny1_hppa.deb
Intel IA-32:
http://security.debian.org/pool/updates/main/l/ldns/libldns1_1.4.0-1+lenny1_i386.deb
http://security.debian.org/pool/updates/main/l/ldns/ldnsutils_1.4.0-1+lenny1_i386.deb
http://security.debian.org/pool/updates/main/l/ldns/libldns-dev_1.4.0-1+lenny1_i386.deb
Intel IA-64:
http://security.debian.org/pool/updates/main/l/ldns/libldns-dev_1.4.0-1+lenny1_ia64.deb
http://security.debian.org/pool/updates/main/l/ldns/libldns1_1.4.0-1+lenny1_ia64.deb
http://security.debian.org/pool/updates/main/l/ldns/ldnsutils_1.4.0-1+lenny1_ia64.deb
Big-endian MIPS:
http://security.debian.org/pool/updates/main/l/ldns/ldnsutils_1.4.0-1+lenny1_mips.deb
http://security.debian.org/pool/updates/main/l/ldns/libldns-dev_1.4.0-1+lenny1_mips.deb
http://security.debian.org/pool/updates/main/l/ldns/libldns1_1.4.0-1+lenny1_mips.deb
Little-endian MIPS:
http://security.debian.org/pool/updates/main/l/ldns/libldns-dev_1.4.0-1+lenny1_mipsel.deb
http://security.debian.org/pool/updates/main/l/ldns/ldnsutils_1.4.0-1+lenny1_mipsel.deb
http://security.debian.org/pool/updates/main/l/ldns/libldns1_1.4.0-1+lenny1_mipsel.deb
PowerPC:
http://security.debian.org/pool/updates/main/l/ldns/libldns1_1.4.0-1+lenny1_powerpc.deb
http://security.debian.org/pool/updates/main/l/ldns/ldnsutils_1.4.0-1+lenny1_powerpc.deb
http://security.debian.org/pool/updates/main/l/ldns/libldns-dev_1.4.0-1+lenny1_powerpc.deb
IBM S/390:
http://security.debian.org/pool/updates/main/l/ldns/libldns-dev_1.4.0-1+lenny1_s390.deb
http://security.debian.org/pool/updates/main/l/ldns/ldnsutils_1.4.0-1+lenny1_s390.deb
http://security.debian.org/pool/updates/main/l/ldns/libldns1_1.4.0-1+lenny1_s390.deb
Sun Sparc:
http://security.debian.org/pool/updates/main/l/ldns/libldns1_1.4.0-1+lenny1_sparc.deb
http://security.debian.org/pool/updates/main/l/ldns/libldns-dev_1.4.0-1+lenny1_sparc.deb
http://security.debian.org/pool/updates/main/l/ldns/ldnsutils_1.4.0-1+lenny1_sparc.deb

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