CVE-2015-3193
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
02 Description
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
03 Exploitation and scoring
- Exploitation
- Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
- SSVC decision
- Not assessed by CISA
- EPSS probability
- 25.13% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 97.7% of scored records. A rank, not a probability.
- NVD base score
- 7.5 (CVSS v3.x), scored by the NVD independently of the CNA.
- NVD CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
- NVD analysis status
- Modified. NVD last modified this record on 2026-06-17.
- Red Hat severity
- Moderate. Red Hat's rating for its own products, not a CVSS rating.
Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.
04 Metadata
- Published
- 2015-12-06 00:00Z10 YR AGO
- Last updated
- 2024-08-06 05:39Z2 YR AGO
- Reserved
- 2015-04-10
- Assigning CNA
- redhat
- Record state
- PUBLISHED
- Severity
- Not rated by the issuing CNA
- CNA CVSS vector
- Not published by the issuing CNA
- Weaknesses
- CWE-200Exposure of Sensitive Information to an Unauthorized ActorClass
- Data version
- 5.1
- Document digest
- c87df3cb84ac70bec324e8af2ff18310ea8b96adcbb75728ca40873932fe4ad3
05 Affected products
06 References
- tools.cisco.com20151204 Multiple Vulnerabilities in OpenSSL (December 2015) Affecting Cisco Productshttp://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20151204-openssl
- kb.isc.orghttps://kb.isc.org/article/AA-01438
- www.oracle.comhttp://www.oracle.com/technetwork/security-advisory/cpujul2016-2881720.html
- blog.fuzzing-project.orghttps://blog.fuzzing-project.org/31-Fuzzing-Math-miscalculations-in-OpenSSLs-BN_mod_exp-CVE-2015-3193.html
- www.fortiguard.comhttp://www.fortiguard.com/advisory/openssl-advisory-december-2015
- www.slackware.comSSA:2015-349-04http://www.slackware.com/security/viewer.php?l=slackware-security&y=2015&m=slackware-security.754583
- www.oracle.comhttp://www.oracle.com/technetwork/security-advisory/cpuoct2017-3236626.html
- kb.pulsesecure.nethttps://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA40100
- www.slackware.comSSA:2015-349-01http://www.slackware.com/security/viewer.php?l=slackware-security&y=2015&m=slackware-security.539966
- kb.juniper.nethttp://kb.juniper.net/InfoCenter/index?page=content&id=JSA10761
- www.ubuntu.comUSN-2830-1http://www.ubuntu.com/usn/USN-2830-1
- www.securityfocus.com78705http://www.securityfocus.com/bid/78705
- www.oracle.comhttp://www.oracle.com/technetwork/security-advisory/cpuapr2016v3-2985753.html
- www.securityfocus.com91787http://www.securityfocus.com/bid/91787
- bugzilla.redhat.comhttps://bugzilla.redhat.com/show_bug.cgi?id=1288317
- openssl.orghttp://openssl.org/news/secadv/20151203.txt
- www.securitytracker.com1034294http://www.securitytracker.com/id/1034294
- git.openssl.orghttps://git.openssl.org/?p=openssl.git%3Ba=commit%3Bh=d73cc256c8e256c32ed959456101b73ba9842f72
- fortiguard.comhttp://fortiguard.com/advisory/openssl-advisory-december-2015
- h20566.www2.hpe.comhttps://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05398322
- kb.juniper.nethttp://kb.juniper.net/InfoCenter/index?page=content&id=JSA10759
- cert-portal.siemens.comhttps://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf
07 Fixed in
Debian 12
- openssl Fixed in 1.0.2e-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 13
- openssl Fixed in 1.0.2e-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 14
- openssl Fixed in 1.0.2e-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.