MDKSA-2003:109
- Package name
- gnupg
- Date
- 2003-11-28
- Advisory ID
- MDKSA-2003:109
- Affected versions
- 9.2 amd64 , CS2.1 x86_64 , CS2.1 i586 , 9.2 i586 , 9.0 i586 , 9.1 i586 , MNF8.2 i586 , 9.1 i586
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
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
CS2.1 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
CS2.1 i586
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
9.2 i586
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
9.0 i586
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
9.1 i586
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
MNF8.2 i586
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
9.1 i586
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