National Vulnerability Database

National Vulnerability Database

National Vulnerability
Database

CVE-2007-3108 Detail

Description

The BN_from_montgomery function in crypto/bn/bn_mont.c in OpenSSL 0.9.8e and earlier does not properly perform Montgomery multiplication, which might allow local users to conduct a side-channel attack and retrieve RSA private keys.

Source:  MITRE
Description Last Modified:  08/07/2007

Impact

CVSS v2.0 Severity and Metrics:

Base Score: 1.2 LOW
Vector: (AV:L/AC:H/Au:N/C:P/I:N/A:N) (V2 legend)
Impact Subscore: 2.9
Exploitability Subscore: 1.9


Access Vector (AV): Local
Access Complexity (AC): High
Authentication (AU): None
Confidentiality (C): Partial
Integrity (I): None
Availability (A): None
Additional Information:
Allows unauthorized disclosure of information

Vendor Statements (disclaimer)

Official Statement from Red Hat (08/14/2007)

This paper describes a possible side-channel attack that hasn’t been proven outside of a lab environment. In reality many factors would make this harder to exploit. If exploited, a local user could obtain RSA private keys (for example for web sites being run on the server). We have rated this as affecting Red Hat products with moderate security severity. Although the OpenSSL team have produced a patch for this issue, it is non-trivial and will require more testing before we can deploy it in a future update. Our current plan is as follows: - To include a backported fix in an OpenSSL update as part of Enterprise Linux 4.6. This will get testing via beta and give time for more extensive internal and upstream testing - To release an update for OpenSSL for other platforms at the same time as 4.6 is released http://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=CVE-2007-3108

References to Advisories, Solutions, and Tools

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Hyperlink Resource
http://cvs.openssl.org/chngview?cn=16275
http://lists.vmware.com/pipermail/security-announce/2008/000002.html
http://openssl.org/news/patch-CVE-2007-3108.txt
http://security.gentoo.org/glsa/glsa-200710-06.xml
http://support.attachmate.com/techdocs/2374.html
http://support.avaya.com/elmodocs2/security/ASA-2007-485.htm
http://www.bluecoat.com/support/securityadvisories/advisory_openssl_rsa_key_reconstruction_vulnerability
http://www.debian.org/security/2008/dsa-1571
http://www.gentoo.org/security/en/glsa/glsa-200805-07.xml
http://www.kb.cert.org/vuls/id/724968 US Government Resource
http://www.kb.cert.org/vuls/id/RGII-74KLP3
http://www.mandriva.com/security/advisories?name=MDKSA-2007:193
http://www.redhat.com/support/errata/RHSA-2007-0813.html
http://www.redhat.com/support/errata/RHSA-2007-0964.html
http://www.redhat.com/support/errata/RHSA-2007-1003.html
http://www.securityfocus.com/archive/1/476341/100/0/threaded
http://www.securityfocus.com/archive/1/485936/100/0/threaded
http://www.securityfocus.com/archive/1/486859/100/0/threaded
http://www.securityfocus.com/bid/25163 Patch
http://www.vmware.com/security/advisories/VMSA-2008-0001.html
http://www.vmware.com/security/advisories/VMSA-2008-0013.html
http://www.vupen.com/english/advisories/2007/2759
http://www.vupen.com/english/advisories/2007/4010
http://www.vupen.com/english/advisories/2008/0064
http://www.vupen.com/english/advisories/2008/2361
http://www.vupen.com/english/advisories/2008/2362
http://www.vupen.com/english/advisories/2008/2396
https://issues.rpath.com/browse/RPL-1613
https://issues.rpath.com/browse/RPL-1633
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9984
https://usn.ubuntu.com/522-1/

References to Check Content

Identifier:
oval:org.mitre.oval:def:9984
Check System:
http://oval.mitre.org/XMLSchema/oval-definitions-5
Hyperlink:
http://oval.mitre.org/repository/data/DownloadDefinition?id=oval:org.mitre.oval:def:9984

Technical Details

Vulnerability Type (View All)

Change History

4 change records found - show changes

Quick Info

CVE Dictionary Entry:
CVE-2007-3108
NVD Published Date:
08/07/2007
NVD Last Modified:
10/16/2018