CVE-2015-3193
7.5 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
6.3 Medium
AI Score
Confidence
High
5 Medium
CVSS2
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
NONE
AV:N/AC:L/Au:N/C:P/I:N/A:N
0.005 Low
EPSS
Percentile
74.9%
The Montgomery squaring implementation in crypto/bn/asm/x86_64-mont5.pl in OpenSSL 1.0.2 before 1.0.2e on the x86_64 platform, as used by the BN_mod_exp function, mishandles carry propagation and produces incorrect output, which makes it easier for remote attackers to obtain sensitive private-key information via an attack against use of a (1) Diffie-Hellman (DH) or (2) Diffie-Hellman Ephemeral (DHE) ciphersuite.
References
fortiguard.com/advisory/openssl-advisory-december-2015
kb.juniper.net/InfoCenter/index?page=content&id=JSA10759
kb.juniper.net/InfoCenter/index?page=content&id=JSA10761
openssl.org/news/secadv/20151203.txt
tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20151204-openssl
www.fortiguard.com/advisory/openssl-advisory-december-2015
www.oracle.com/technetwork/security-advisory/cpuapr2016v3-2985753.html
www.oracle.com/technetwork/security-advisory/cpujul2016-2881720.html
www.oracle.com/technetwork/security-advisory/cpuoct2017-3236626.html
www.securityfocus.com/bid/78705
www.securityfocus.com/bid/91787
www.securitytracker.com/id/1034294
www.slackware.com/security/viewer.php?l=slackware-security&y=2015&m=slackware-security.539966
www.slackware.com/security/viewer.php?l=slackware-security&y=2015&m=slackware-security.754583
www.ubuntu.com/usn/USN-2830-1
blog.fuzzing-project.org/31-Fuzzing-Math-miscalculations-in-OpenSSLs-BN_mod_exp-CVE-2015-3193.html
bugzilla.redhat.com/show_bug.cgi?id=1288317
cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf
git.openssl.org/?p=openssl.git%3Ba=commit%3Bh=d73cc256c8e256c32ed959456101b73ba9842f72
h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05398322
kb.isc.org/article/AA-01438
kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA40100
Social References
More
Related
7.5 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
6.3 Medium
AI Score
Confidence
High
5 Medium
CVSS2
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
NONE
AV:N/AC:L/Au:N/C:P/I:N/A:N
0.005 Low
EPSS
Percentile
74.9%