[SECURITY] [DSA 1195-1] new openssl096 packages fix denial of service

ID DEBIAN:DSA-1195-1:12A42
Type debian
Reporter Debian
Modified 2006-10-10T00:00:00


Debian Security Advisory DSA-1195-1 security@debian.org http://www.debian.org/security/ Noah Meyerhans October 10, 2006

Package : openssl096 Vulnerability : denial of service (multiple) Problem-Type : remote Debian-specific: no CVE ID : CVE-2006-2940 CVE-2006-3738 CVE-2006-4343

Multiple vulnerabilities have been discovered in the OpenSSL cryptographic software package that could allow an attacker to launch a denial of service attack by exhausting system resources or crashing processes on a victim's computer.

CVE-2006-3738 Tavis Ormandy and Will Drewry of the Google Security Team discovered a buffer overflow in SSL_get_shared_ciphers utility function, used by some applications such as exim and mysql. An attacker could send a list of ciphers that would overrun a buffer.

CVE-2006-4343 Tavis Ormandy and Will Drewry of the Google Security Team discovered a possible DoS in the sslv2 client code. Where a client application uses OpenSSL to make a SSLv2 connection to a malicious server that server could cause the client to crash.

CVE-2006-2940 Dr S N Henson of the OpenSSL core team and Open Network Security recently developed an ASN1 test suite for NISCC (www.niscc.gov.uk). When the test suite was run against OpenSSL a DoS was discovered.

    Certain types of public key can take disproportionate amounts
    of time to process. This could be used by an attacker in a
    denial of service attack.

For the stable distribution (sarge) these problems have been fixed in version 0.9.6m-1sarge4

This package exists only for compatibility with older software, and is not present in the unstable or testing branches of Debian.

We recommend that you upgrade your openssl096 package. Note that services linking against the openssl shared libraries will need to be restarted. Common examples of such services include most Mail Transport Agents, SSH servers, and web servers.

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 3.1 (stable)

Stable updates are available for alpha, amd64, arm, hppa, i386, ia64, m68k, mips, mipsel, powerpc, s390 and sparc.

Source archives:

http://security.debian.org/pool/updates/main/o/openssl096/openssl096_0.9.6m-1sarge4.diff.gz Size/MD5 checksum: 21115 9019caf796eb866f24d5949503b1cdb5 http://security.debian.org/pool/updates/main/o/openssl096/openssl096_0.9.6m.orig.tar.gz Size/MD5 checksum: 2184918 1b63bfdca1c37837dddde9f1623498f9 http://security.debian.org/pool/updates/main/o/openssl096/openssl096_0.9.6m-1sarge4.dsc Size/MD5 checksum: 617 7d60c6c3ecdf502734068ab2a8b32118

alpha architecture (DEC Alpha)

http://security.debian.org/pool/updates/main/o/openssl096/libssl0.9.6_0.9.6m-1sarge4_alpha.deb Size/MD5 checksum: 1966534 9f78dcc0f9685641a7fc3d927370d819

amd64 architecture (AMD x86_64 (AMD64))

http://security.debian.org/pool/updates/main/o/openssl096/libssl0.9.6_0.9.6m-1sarge4_amd64.deb Size/MD5 checksum: 578632 f1574a0058e85cb0e2c6cff996530c97

arm architecture (ARM)

http://security.debian.org/pool/updates/main/o/openssl096/libssl0.9.6_0.9.6m-1sarge4_arm.deb Size/MD5 checksum: 519304 66fa4a65d803f0115dd80d5359944a2d

hppa architecture (HP PA RISC)

http://security.debian.org/pool/updates/main/o/openssl096/libssl0.9.6_0.9.6m-1sarge4_hppa.deb Size/MD5 checksum: 587946 353d46f3351d5a19dfdaf22f605fc627

i386 architecture (Intel ia32)

http://security.debian.org/pool/updates/main/o/openssl096/libssl0.9.6_0.9.6m-1sarge4_i386.deb Size/MD5 checksum: 1756270 2747688d91dfe1cd00430a74bdef6265

ia64 architecture (Intel ia64)

http://security.debian.org/pool/updates/main/o/openssl096/libssl0.9.6_0.9.6m-1sarge4_ia64.deb Size/MD5 checksum: 815662 45a5b6503ed631149fea28b37a980e21

m68k architecture (Motorola Mc680x0)

http://security.debian.org/pool/updates/main/o/openssl096/libssl0.9.6_0.9.6m-1sarge4_m68k.deb Size/MD5 checksum: 477288 da4ddff773fd7d6af0604363719b368a

mips architecture (MIPS (Big Endian))

http://security.debian.org/pool/updates/main/o/openssl096/libssl0.9.6_0.9.6m-1sarge4_mips.deb Size/MD5 checksum: 577284 d2bf3c9d86dbba15bbb9d1cb93a6fc51

mipsel architecture (MIPS (Little Endian))

http://security.debian.org/pool/updates/main/o/openssl096/libssl0.9.6_0.9.6m-1sarge4_mipsel.deb Size/MD5 checksum: 569246 75d69f033f833b7928a8ca521efb95ea

powerpc architecture (PowerPC)

http://security.debian.org/pool/updates/main/o/openssl096/libssl0.9.6_0.9.6m-1sarge4_powerpc.deb Size/MD5 checksum: 582928 72be71aae8b781ca5a7b1d1b2e738541

s390 architecture (IBM S/390)

http://security.debian.org/pool/updates/main/o/openssl096/libssl0.9.6_0.9.6m-1sarge4_s390.deb Size/MD5 checksum: 602874 e671b41d37d34b7d2055eaca112be269

sparc architecture (Sun SPARC/UltraSPARC)

http://security.debian.org/pool/updates/main/o/openssl096/libssl0.9.6_0.9.6m-1sarge4_sparc.deb Size/MD5 checksum: 1460162 acfb3e17f005c32268fa1def17ea884b

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: debian-security-announce@lists.debian.org Package info: `apt-cache show <pkg>' and http://packages.debian.org/<pkg>