Debian Security Advisory

DSA-1511-1 libicu -- various

Date Reported:

03 Mar 2008

Affected Packages:

libicu

Vulnerable:

Yes

Security database references:

In the Debian bugtracking system: Bug 463688.

More information:

Several local vulnerabilities have been discovered in libicu, International Components for Unicode, The Common Vulnerabilities and Exposures project identifies the following problems:

CVE-2007-4770
libicu in International Components for Unicode (ICU) 3.8.1 and earlier attempts to process backreferences to the nonexistent capture group zero (aka \0), which might allow context-dependent attackers to read from, or write to, out-of-bounds memory locations, related to corruption of REStackFrames.
CVE-2007-4771
Heap-based buffer overflow in the doInterval function in regexcmp.cpp in libicu in International Components for Unicode (ICU) 3.8.1 and earlier allows context-dependent attackers to cause a denial of service (memory consumption) and possibly have unspecified other impact via a regular expression that writes a large amount of data to the backtracking stack.

For the stable distribution (etch), these problems have been fixed in version 3.6-2etch1.

For the unstable distribution (sid), these problems have been fixed in version 3.8-6.

We recommend that you upgrade your libicu package.

Fixed in:

Debian GNU/Linux 4.0 (etch)

Source:: http://security.debian.org/pool/updates/main/i/icu/icu_3.6.orig.tar.gz; http://security.debian.org/pool/updates/main/i/icu/icu_3.6-2etch1.dsc; http://security.debian.org/pool/updates/main/i/icu/icu_3.6-2etch1.diff.gz
Architecture-independent component:: http://security.debian.org/pool/updates/main/i/icu/icu-doc_3.6-2etch1_all.deb
Alpha:: http://security.debian.org/pool/updates/main/i/icu/libicu36-dev_3.6-2etch1_alpha.deb; http://security.debian.org/pool/updates/main/i/icu/libicu36_3.6-2etch1_alpha.deb
AMD64:: http://security.debian.org/pool/updates/main/i/icu/libicu36-dev_3.6-2etch1_amd64.deb; http://security.debian.org/pool/updates/main/i/icu/libicu36_3.6-2etch1_amd64.deb
ARM:: http://security.debian.org/pool/updates/main/i/icu/libicu36-dev_3.6-2etch1_arm.deb; http://security.debian.org/pool/updates/main/i/icu/libicu36_3.6-2etch1_arm.deb
HP Precision:: http://security.debian.org/pool/updates/main/i/icu/libicu36-dev_3.6-2etch1_hppa.deb; http://security.debian.org/pool/updates/main/i/icu/libicu36_3.6-2etch1_hppa.deb
Intel IA-32:: http://security.debian.org/pool/updates/main/i/icu/libicu36_3.6-2etch1_i386.deb; http://security.debian.org/pool/updates/main/i/icu/libicu36-dev_3.6-2etch1_i386.deb
Intel IA-64:: http://security.debian.org/pool/updates/main/i/icu/libicu36-dev_3.6-2etch1_ia64.deb; http://security.debian.org/pool/updates/main/i/icu/libicu36_3.6-2etch1_ia64.deb
Big-endian MIPS:: http://security.debian.org/pool/updates/main/i/icu/libicu36-dev_3.6-2etch1_mips.deb; http://security.debian.org/pool/updates/main/i/icu/libicu36_3.6-2etch1_mips.deb
PowerPC:: http://security.debian.org/pool/updates/main/i/icu/libicu36_3.6-2etch1_powerpc.deb; http://security.debian.org/pool/updates/main/i/icu/libicu36-dev_3.6-2etch1_powerpc.deb
IBM S/390:: http://security.debian.org/pool/updates/main/i/icu/libicu36_3.6-2etch1_s390.deb; http://security.debian.org/pool/updates/main/i/icu/libicu36-dev_3.6-2etch1_s390.deb
Sun Sparc:: http://security.debian.org/pool/updates/main/i/icu/libicu36_3.6-2etch1_sparc.deb; http://security.debian.org/pool/updates/main/i/icu/libicu36-dev_3.6-2etch1_sparc.deb

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