Debian Security Advisory

DSA-393-1 openssl -- denial of service

Date Reported:

01 Oct 2003

Affected Packages:

openssl

Vulnerable:

Yes

Security database references:

In Mitre's CVE dictionary: CAN-2003-0543, CAN-2003-0544.

More information:

Dr. Stephen Henson (steve@openssl.org), using a test suite provided by NISCC (http://www.niscc.gov.uk/), discovered a number of errors in the OpenSSL ASN1 code. Combined with an error that causes the OpenSSL code to parse client certificates even when it should not, these errors can cause a denial of service (DoS) condition on a system using the OpenSSL code, depending on how that code is used. For example, even though apache-ssl and ssh link to OpenSSL libraries, they should not be affected by this vulnerability. However, other SSL-enabled applications may be vulnerable and an OpenSSL upgrade is recommended.

For the current stable distribution (woody) these problems have been fixed in version 0.9.6c-2.woody.4.

For the unstable distribution (sid) these problems have been fixed in version 0.9.7c-1.

We recommend that you update your openssl package. Note that you will need to restart services which use the libssl library for this update to take effect.

Fixed in:

Debian GNU/Linux 3.0 (woody)

Source:

http://security.debian.org/pool/updates/main/o/openssl/openssl_0.9.6c-2.woody.4.dsc

http://security.debian.org/pool/updates/main/o/openssl/openssl_0.9.6c.orig.tar.gz

http://security.debian.org/pool/updates/main/o/openssl/openssl_0.9.6c-2.woody.4.diff.gz

Architecture-independent component:

http://security.debian.org/pool/updates/main/o/openssl/ssleay_0.9.6c-2.woody.4_all.deb

Alpha:

http://security.debian.org/pool/updates/main/o/openssl/libssl-dev_0.9.6c-2.woody.4_alpha.deb

http://security.debian.org/pool/updates/main/o/openssl/libssl0.9.6_0.9.6c-2.woody.4_alpha.deb

http://security.debian.org/pool/updates/main/o/openssl/openssl_0.9.6c-2.woody.4_alpha.deb

ARM:

http://security.debian.org/pool/updates/main/o/openssl/libssl0.9.6_0.9.6c-2.woody.4_arm.deb

http://security.debian.org/pool/updates/main/o/openssl/libssl-dev_0.9.6c-2.woody.4_arm.deb

http://security.debian.org/pool/updates/main/o/openssl/openssl_0.9.6c-2.woody.4_arm.deb

HPPA:

http://security.debian.org/pool/updates/main/o/openssl/libssl-dev_0.9.6c-2.woody.4_hppa.deb

http://security.debian.org/pool/updates/main/o/openssl/libssl0.9.6_0.9.6c-2.woody.4_hppa.deb

http://security.debian.org/pool/updates/main/o/openssl/openssl_0.9.6c-2.woody.4_hppa.deb

Intel IA-32:

http://security.debian.org/pool/updates/main/o/openssl/libssl0.9.6_0.9.6c-2.woody.4_i386.deb

http://security.debian.org/pool/updates/main/o/openssl/openssl_0.9.6c-2.woody.4_i386.deb

http://security.debian.org/pool/updates/main/o/openssl/libssl-dev_0.9.6c-2.woody.4_i386.deb

Intel IA-64:

http://security.debian.org/pool/updates/main/o/openssl/openssl_0.9.6c-2.woody.4_ia64.deb

http://security.debian.org/pool/updates/main/o/openssl/libssl0.9.6_0.9.6c-2.woody.4_ia64.deb

http://security.debian.org/pool/updates/main/o/openssl/libssl-dev_0.9.6c-2.woody.4_ia64.deb

Motorola 680x0:

http://security.debian.org/pool/updates/main/o/openssl/openssl_0.9.6c-2.woody.4_m68k.deb

http://security.debian.org/pool/updates/main/o/openssl/libssl0.9.6_0.9.6c-2.woody.4_m68k.deb

http://security.debian.org/pool/updates/main/o/openssl/libssl-dev_0.9.6c-2.woody.4_m68k.deb

Big endian MIPS:

http://security.debian.org/pool/updates/main/o/openssl/openssl_0.9.6c-2.woody.4_mips.deb

http://security.debian.org/pool/updates/main/o/openssl/libssl-dev_0.9.6c-2.woody.4_mips.deb

http://security.debian.org/pool/updates/main/o/openssl/libssl0.9.6_0.9.6c-2.woody.4_mips.deb

Little endian MIPS:

http://security.debian.org/pool/updates/main/o/openssl/openssl_0.9.6c-2.woody.4_mipsel.deb

http://security.debian.org/pool/updates/main/o/openssl/libssl-dev_0.9.6c-2.woody.4_mipsel.deb

http://security.debian.org/pool/updates/main/o/openssl/libssl0.9.6_0.9.6c-2.woody.4_mipsel.deb

PowerPC:

http://security.debian.org/pool/updates/main/o/openssl/libssl-dev_0.9.6c-2.woody.4_powerpc.deb

http://security.debian.org/pool/updates/main/o/openssl/openssl_0.9.6c-2.woody.4_powerpc.deb

http://security.debian.org/pool/updates/main/o/openssl/libssl0.9.6_0.9.6c-2.woody.4_powerpc.deb

IBM S/390:

http://security.debian.org/pool/updates/main/o/openssl/libssl0.9.6_0.9.6c-2.woody.4_s390.deb

http://security.debian.org/pool/updates/main/o/openssl/openssl_0.9.6c-2.woody.4_s390.deb

http://security.debian.org/pool/updates/main/o/openssl/libssl-dev_0.9.6c-2.woody.4_s390.deb

Sun Sparc:

http://security.debian.org/pool/updates/main/o/openssl/libssl0.9.6_0.9.6c-2.woody.4_sparc.deb

http://security.debian.org/pool/updates/main/o/openssl/libssl-dev_0.9.6c-2.woody.4_sparc.deb

http://security.debian.org/pool/updates/main/o/openssl/openssl_0.9.6c-2.woody.4_sparc.deb

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