Advisories
Mandriva Advisories
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| Problem Description |
A severe vulnerability was discovered in GnuPG by Phong Nguyen
relating to ElGamal sign+encrypt keys. From Werner Koch's email
message:
"Phong Nguyen identified a severe bug in the way GnuPG creates and uses
ElGamal keys for signing. This is a significant security failure
which can lead to a compromise of almost all ElGamal keys used for
signing. Note that this is a real world vulnerability which will
reveal your private key within a few seconds.
Please *take immediate action and revoke your ElGamal signing keys*.
Furthermore you should take whatever measures necessary to limit the
damage done for signed or encrypted documents using that key."
And also:
"Note that the standard keys as generated by GnuPG (DSA and ElGamal
encryption) as well as RSA keys are NOT vulnerable. Note also that
ElGamal signing keys cannot be generated without the use of a special
flag to enable hidden options and even then overriding a warning
message about this key type. See below for details on how to identify
vulnerable keys."
MandrakeSoft urges any users who use the ElGamal sign+encrypt keys to
immediately revoke these keys and discontinue use of them. Updated
packages are provided that remove the ability to create these keys and
to create signatures using these keys (thanks to David Shaw for
writing the patch).
| Updated Packages |
Mandrakelinux 9.0
f4f876cd0988362fba3718450727fd95 9.0/RPMS/gnupg-1.0.7-3.2.90mdk.i586.rpm a459cb6e80e56562eac4a40a2ece3777 9.0/SRPMS/gnupg-1.0.7-3.2.90mdk.src.rpm
Mandrakelinux 9.1
cdec75d7675fdb36874e61795800f582 9.1/RPMS/gnupg-1.2.2-1.2.91mdk.i586.rpm 08bba4f56d5d5eb581be7170e058133a 9.1/SRPMS/gnupg-1.2.2-1.2.91mdk.src.rpm
Mandrakelinux 9.1/PPC
4c41071186f40d9895a1032ced8d0601 ppc/9.1/RPMS/gnupg-1.2.2-1.2.91mdk.ppc.rpm 08bba4f56d5d5eb581be7170e058133a ppc/9.1/SRPMS/gnupg-1.2.2-1.2.91mdk.src.rpm
Mandrakelinux 9.2
03d66699b92149590b078298063a1744 9.2/RPMS/gnupg-1.2.3-3.1.92mdk.i586.rpm 0f5d1244d156a0b229c0d27e07c67b35 9.2/SRPMS/gnupg-1.2.3-3.1.92mdk.src.rpm
Mandrakelinux 9.2/AMD64
07ff9b065fabb157ae141015f7db0a77 amd64/9.2/RPMS/gnupg-1.2.3-3.1.92mdk.amd64.rpm 0f5d1244d156a0b229c0d27e07c67b35 amd64/9.2/SRPMS/gnupg-1.2.3-3.1.92mdk.src.rpm
Multi Network Firewall 8.2
b59a3c9a6c27c8d0c52e7a83d1ca3c75 mnf8.2/RPMS/gnupg-1.0.7-3.2.M82mdk.i586.rpm d4dbfe3968a94705f7a7e175e00d03c9 mnf8.2/SRPMS/gnupg-1.0.7-3.2.M82mdk.src.rpm
Corporate Server 2.1
d134c826e4fae506ccde3be7686888bc corporate/2.1/RPMS/gnupg-1.0.7-3.2.C21mdk.i586.rpm 9294c6b3587a3a177b1d7ac57c1a0db2 corporate/2.1/SRPMS/gnupg-1.0.7-3.2.C21mdk.src.rpm
Corporate Server 2.1/X86_64
7c4be5a2e952dd10c10f9242b91b51de x86_64/corporate/2.1/RPMS/gnupg-1.0.7-3.2.C21mdk.x86_64.rpm 9294c6b3587a3a177b1d7ac57c1a0db2 x86_64/corporate/2.1/SRPMS/gnupg-1.0.7-3.2.C21mdk.src.rpm
| References |
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2003-0971
http://lists.gnupg.org/pipermail/gnupg-announce/2003q4/000276.html
| Upgrade |
To upgrade automatically, use MandrivaUpdate.
| Verification |
Please verify the update prior to upgrading to ensure the integrity of the downloaded package. You can do this with the command :
rpm --checksig package.rpm
You can get the GPG public key of the Mandriva Security Team to verify the GPG signature of each RPM.
If you use MandrivaUpdate, the verification of md5 checksum and GPG signature is performed automatically for you.