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Vulnerability Details : CVE-2007-3108

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.
Publish Date : 2007-08-07 Last Update Date : 2010-08-21
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- CVSS Scores & Vulnerability Types

CVSS Score
1.2
Confidentiality Impact Partial (There is considerable informational disclosure.)
Integrity Impact None (There is no impact to the integrity of the system)
Availability Impact None (There is no impact to the availability of the system.)
Access Complexity High (Specialized access conditions exist. It is hard to exploit and several special conditions must be satisfied to exploit)
Authentication Not required (Authentication is not required to exploit the vulnerability.)
Gained Access None
Vulnerability Type(s)
CWE ID CWE id is not defined for this vulnerability

- Vendor Statements

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
Source: Redhat

- Additional Vendor Supplied Data

Vendor Impact CVSS Score CVSS Vector Report Date Publish Date
Redhat moderate 2007-06-26 2007-08-01
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- Related OVAL Definitions

Title Definition Id Class Family
DSA-1571 openssl -- predictable random number generator oval:org.mitre.oval:def:7946 unix
DSA-1571-1 openssl - predictable random number generator oval:org.mitre.oval:def:20219 unix
ELSA-2007:0964: openssl security update (Important) oval:org.mitre.oval:def:22488 unix
RHSA-2007:0813: openssl security update (Moderate) oval:com.redhat.rhsa:def:20070813 unix
RHSA-2007:0964: openssl security update (Important) oval:com.redhat.rhsa:def:20070964 unix
RHSA-2007:1003: openssl security and bug fix update (Moderate) oval:com.redhat.rhsa:def:20071003 unix
The BN_from_montgomery function in crypto/bn/bn_mont.c in OpenSSL 0.9.8e and earlier does not properly perform Montgomer... oval:org.mitre.oval:def:9984 unix
OVAL (Open Vulnerability and Assessment Language) definitions define exactly what should be done to verify a vulnerability or a missing patch. Check out the OVAL definitions if you want to learn what you should do to verify a vulnerability.

- Products Affected By CVE-2007-3108

# Product Type Vendor Product Version Update Edition Language
1 Application Openssl Openssl 0.9.8e Version Details Vulnerabilities

- Number Of Affected Versions By Product

Vendor Product Vulnerable Versions
Openssl Openssl 1

- References For CVE-2007-3108

http://secunia.com/advisories/26893
SECUNIA 26893
http://lists.vmware.com/pipermail/security-announce/2008/000002.html
MLIST [Security-announce] 20080107 VMSA-2008-0001 Moderate OpenPegasus PAM Authentication Buffer Overflow and updated service console packages
http://secunia.com/advisories/26411
SECUNIA 26411
http://secunia.com/advisories/27021
SECUNIA 27021
http://secunia.com/advisories/27078
SECUNIA 27078
http://secunia.com/advisories/27097
SECUNIA 27097
http://secunia.com/advisories/27205
SECUNIA 27205
http://secunia.com/advisories/27330
SECUNIA 27330
http://secunia.com/advisories/27770
SECUNIA 27770
http://secunia.com/advisories/27870
SECUNIA 27870
http://www.bluecoat.com/support/securityadvisories/advisory_openssl_rsa_key_reconstruction_vulnerability CONFIRM
http://secunia.com/advisories/28368
SECUNIA 28368
http://secunia.com/advisories/30161
SECUNIA 30161
http://secunia.com/advisories/30220
SECUNIA 30220
http://security.gentoo.org/glsa/glsa-200710-06.xml
GENTOO GLSA-200710-06
http://support.avaya.com/elmodocs2/security/ASA-2007-485.htm CONFIRM
http://www.redhat.com/support/errata/RHSA-2007-1003.html
REDHAT RHSA-2007:1003
http://www.redhat.com/support/errata/RHSA-2007-0964.html
REDHAT RHSA-2007:0964
http://www.redhat.com/support/errata/RHSA-2007-0813.html
REDHAT RHSA-2007:0813
http://www.mandriva.com/security/advisories?name=MDKSA-2007:193
MANDRIVA MDKSA-2007:193
http://www.gentoo.org/security/en/glsa/glsa-200805-07.xml
GENTOO GLSA-200805-07
http://www.frsirt.com/english/advisories/2008/0064
VUPEN ADV-2008-0064
http://www.frsirt.com/english/advisories/2007/4010
VUPEN ADV-2007-4010
http://www.debian.org/security/2008/dsa-1571
DEBIAN DSA-1571
https://issues.rpath.com/browse/RPL-1633 CONFIRM
https://issues.rpath.com/browse/RPL-1613 CONFIRM
http://www.vmware.com/security/advisories/VMSA-2008-0001.html CONFIRM
http://www.ubuntulinux.org/support/documentation/usn/usn-522-1
UBUNTU USN-522-1
http://www.securityfocus.com/archive/1/archive/1/486859/100/0/threaded
BUGTRAQ 20080123 UPDATED VMSA-2008-0001.1 Moderate OpenPegasus PAM Authentication Buffer Overflow and updated service console packages
http://www.securityfocus.com/archive/1/archive/1/485936/100/0/threaded
BUGTRAQ 20080108 VMSA-2008-0001 Moderate OpenPegasus PAM Authentication Buffer Overflow and updated service console packages
http://cvs.openssl.org/chngview?cn=16275 CONFIRM
http://openssl.org/news/patch-CVE-2007-3108.txt CONFIRM
http://secunia.com/advisories/31467
SECUNIA 31467
http://secunia.com/advisories/31531
SECUNIA 31531
http://secunia.com/advisories/31489
SECUNIA 31489
http://support.attachmate.com/techdocs/2374.html CONFIRM
http://www.frsirt.com/english/advisories/2008/2361
VUPEN ADV-2008-2361
http://www.securityfocus.com/archive/1/archive/1/476341/100/0/threaded
BUGTRAQ 20070813 FLEA-2007-0043-1 openssl
http://www.kb.cert.org/vuls/id/RGII-74KLP3 CONFIRM
http://www.frsirt.com/english/advisories/2008/2396
VUPEN ADV-2008-2396
http://www.frsirt.com/english/advisories/2007/2759
VUPEN ADV-2007-2759
http://www.vmware.com/security/advisories/VMSA-2008-0013.html CONFIRM
http://www.kb.cert.org/vuls/id/724968
CERT-VN VU#724968
http://www.securityfocus.com/bid/25163
BID 25163 OpenSSL Montgomery Exponentiation Side-Channel Local Information Disclosure Vulnerability Release Date:2010-04-14
http://www.frsirt.com/english/advisories/2008/2362
VUPEN ADV-2008-2362

- Metasploit Modules Related To CVE-2007-3108

There are not any metasploit modules related to this CVE entry (Please visit www.metasploit.com for more information)


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