Vulnerability Bulletins |
Obtención de claves privadas RSA en OpenSSL |
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Vulnerability classification |
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| Property | Value |
| Confidence level | Oficial |
| Impact | Confidencialidad |
| Dificulty | Experto |
| Required attacker level | Acceso remoto sin cuenta a un servicio estandar |
System information |
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| Property | Value |
| Affected manufacturer | GNU/Linux |
| Affected software | OpenSSL <= 0.9.8e |
Description |
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Se ha encontrado una vulnerabilidad en OpenSSL en la versión 0.9.8e y todas las anteriores en los archivos crypto/bn/bn_mont.c en la función BN_from_montgomery. La vulnerabilidad reside al no realizar correctamente la multiplicación Montgomery. Un atacante local podría obtener las claves privadas RSA mediante un ataque del tipo side channel. |
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Solution |
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Actualización de software Mandriva (MDKSA-2007:193) Corporate Server 3.0 X86 ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/corporate/3.0/i586/libopenssl0.9.7-0.9.7c-3.8.C30mdk.i586.rpm ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/corporate/3.0/i586/libopenssl0.9.7-devel-0.9.7c-3.8.C30mdk.i586.rpm ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/corporate/3.0/i586/libopenssl0.9.7-static-devel-0.9.7c-3.8.C30mdk.i586.rpm ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/corporate/3.0/i586/openssl-0.9.7c-3.8.C30mdk.i586.rpm ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/corporate/3.0/SRPMS/openssl-0.9.7c-3.8.C30mdk.src.rpm X86_64 ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/corporate/3.0/x86_64/lib64openssl0.9.7-0.9.7c-3.8.C30mdk.x86_64.rpm ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/corporate/3.0/x86_64/lib64openssl0.9.7-devel-0.9.7c-3.8.C30mdk.x86_64.rpm ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/corporate/3.0/x86_64/lib64openssl0.9.7-static-devel-0.9.7c-3.8.C30mdk.x86_64.rpm ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/corporate/3.0/x86_64/openssl-0.9.7c-3.8.C30mdk.x86_64.rpm ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/corporate/3.0/SRPMS/openssl-0.9.7c-3.8.C30mdk.src.rpm Multi Network Firewall 2.0 X86 ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/mnf/2.0/i586/libopenssl0.9.7-0.9.7c-3.8.M20mdk.i586.rpm ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/mnf/2.0/i586/libopenssl0.9.7-devel-0.9.7c-3.8.M20mdk.i586.rpm ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/mnf/2.0/i586/libopenssl0.9.7-static-devel-0.9.7c-3.8.M20mdk.i586.rpm ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/mnf/2.0/i586/openssl-0.9.7c-3.8.M20mdk.i586.rpm ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/mnf/2.0/SRPMS/openssl-0.9.7c-3.8.M20mdk.src.rpm Mandriva Linux 2007 X86 ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/2007.0/i586/libopenssl0.9.8-0.9.8b-2.3mdv2007.0.i586.rpm ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/2007.0/i586/libopenssl0.9.8-devel-0.9.8b-2.3mdv2007.0.i586.rpm ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/2007.0/i586/libopenssl0.9.8-static-devel-0.9.8b-2.3mdv2007.0.i586.rpm ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/2007.0/i586/openssl-0.9.8b-2.3mdv2007.0.i586.rpm ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/2007.0/SRPMS/openssl-0.9.8b-2.3mdv2007.0.src.rpm X86_64 ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/2007.0/x86_64/lib64openssl0.9.8-0.9.8b-2.3mdv2007.0.x86_64.rpm ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/2007.0/x86_64/lib64openssl0.9.8-devel-0.9.8b-2.3mdv2007.0.x86_64.rpm ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/2007.0/x86_64/lib64openssl0.9.8-static-devel-0.9.8b-2.3mdv2007.0.x86_64.rpm ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/2007.0/x86_64/openssl-0.9.8b-2.3mdv2007.0.x86_64.rpm ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/2007.0/SRPMS/openssl-0.9.8b-2.3mdv2007.0.src.rpm Corporate Server 4.0 X86 ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/corporate/4.0/i586/libopenssl0.9.7-0.9.7g-2.6.20060mlcs4.i586.rpm ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/corporate/4.0/i586/libopenssl0.9.7-devel-0.9.7g-2.6.20060mlcs4.i586.rpm ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/corporate/4.0/i586/libopenssl0.9.7-static-devel-0.9.7g-2.6.20060mlcs4.i586.rpm ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/corporate/4.0/i586/openssl-0.9.7g-2.6.20060mlcs4.i586.rpm ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/corporate/4.0/SRPMS/openssl-0.9.7g-2.6.20060mlcs4.src.rpm X86_64 ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/corporate/4.0/x86_64/lib64openssl0.9.7-0.9.7g-2.6.20060mlcs4.x86_64.rpm ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/corporate/4.0/x86_64/lib64openssl0.9.7-devel-0.9.7g-2.6.20060mlcs4.x86_64.rpm ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/corporate/4.0/x86_64/lib64openssl0.9.7-static-devel-0.9.7g-2.6.20060mlcs4.x86_64.rpm ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/corporate/4.0/x86_64/openssl-0.9.7g-2.6.20060mlcs4.x86_64.rpm ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/corporate/4.0/SRPMS/openssl-0.9.7g-2.6.20060mlcs4.src.rpm Mandriva Linux 2007.1 X86 ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/2007.1/i586/libopenssl0.9.8-0.9.8e-2.2mdv2007.1.i586.rpm ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/2007.1/i586/libopenssl0.9.8-devel-0.9.8e-2.2mdv2007.1.i586.rpm ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/2007.1/i586/libopenssl0.9.8-static-devel-0.9.8e-2.2mdv2007.1.i586.rpm ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/2007.1/i586/openssl-0.9.8e-2.2mdv2007.1.i586.rpm ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/2007.1/SRPMS/openssl-0.9.8e-2.2mdv2007.1.src.rpm X86_64 ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/2007.1/x86_64/lib64openssl0.9.8-0.9.8e-2.2mdv2007.1.x86_64.rpm ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/2007.1/x86_64/lib64openssl0.9.8-devel-0.9.8e-2.2mdv2007.1.x86_64.rpm ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/2007.1/x86_64/lib64openssl0.9.8-static-devel-0.9.8e-2.2mdv2007.1.x86_64.rpm ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/2007.1/x86_64/openssl-0.9.8e-2.2mdv2007.1.x86_64.rpm ftp://ftp.ps.pl/mirrors/Mandrakelinux/official/updates/2007.1/SRPMS/openssl-0.9.8e-2.2mdv2007.1.src.rpm Red Hat (RHSA-2007:0964-4) RHEL Desktop Workstation (v. 5 client) Red Hat Enterprise Linux (v. 5 server) Red Hat Enterprise Linux Desktop (v. 5 client) https://rhn.redhat.com/ Red Hat (RHSA-2007:0813-2) Red Hat Desktop (v. 3) Red Hat Enterprise Linux AS (v. 2.1) Red Hat Enterprise Linux AS (v. 3) Red Hat Enterprise Linux ES (v. 2.1) Red Hat Enterprise Linux ES (v. 3) Red Hat Enterprise Linux WS (v. 2.1) Red Hat Enterprise Linux WS (v. 3) Red Hat Linux Advanced Workstation 2.1 for the Itanium Processor https://rhn.redhat.com/ Red Hat (RHSA-2007:1003-2) Red Hat Desktop (v. 4) Red Hat Enterprise Linux AS (v. 4) Red Hat Enterprise Linux ES (v. 4) Red Hat Enterprise Linux WS (v. 4) https://rhn.redhat.com/ |
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Standar resources |
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| Property | Value |
| CVE | CVE-2007-3108 |
| BID | 25163 |
Other resources |
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Mandriva Security Advisory (MDKSA-2007:193) http://www.mandriva.com/security/advisories?name=MDKSA-2007:193 Red Hat Security Advisory (RHSA-2007:0964-4) https://rhn.redhat.com/errata/RHSA-2007-0964.html Red Hat Security Advisory (RHSA-2007:0813-2) https://rhn.redhat.com/errata/RHSA-2007-0813.html Red Hat Security Advisory (RHSA-2007:1003-2) https://rhn.redhat.com/errata/RHSA-2007-1003.html |
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Version history |
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| Version | Comments | Date |
| 1.0 | Aviso emitido | 2007-10-08 |
| 1.1 | Aviso emitido por Red Hat (RHSA-2007:0964-4) | 2007-10-16 |
| 1.2 | Aviso emitido por Red Hat (RHSA-2007:0813-2) | 2007-10-24 |
| 1.3 | Aviso emitido por Red Hat (RHSA-2007:1003-2) | 2007-11-19 |