Executive Summary

Informations
Name CVE-2015-1793 First vendor Publication 2015-07-09
Vendor Cve Last vendor Modification 2023-11-07

Security-Database Scoring CVSS v3

Cvss vector : CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
Overall CVSS Score 6.5
Base Score 6.5 Environmental Score 6.5
impact SubScore 2.5 Temporal Score 6.5
Exploitabality Sub Score 3.9
 
Attack Vector Network Attack Complexity Low
Privileges Required None User Interaction None
Scope Unchanged Confidentiality Impact Low
Integrity Impact Low Availability Impact None
Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector : (AV:N/AC:L/Au:N/C:P/I:P/A:N)
Cvss Base Score 6.4 Attack Range Network
Cvss Impact Score 4.9 Attack Complexity Low
Cvss Expoit Score 10 Authentication None Required
Calculate full CVSS 2.0 Vectors scores

Detail

The X509_verify_cert function in crypto/x509/x509_vfy.c in OpenSSL 1.0.1n, 1.0.1o, 1.0.2b, and 1.0.2c does not properly process X.509 Basic Constraints cA values during identification of alternative certificate chains, which allows remote attackers to spoof a Certification Authority role and trigger unintended certificate verifications via a valid leaf certificate.

Original Source

Url : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-1793

CWE : Common Weakness Enumeration

% Id Name
100 % CWE-254 Security Features

OVAL Definitions

Definition Id: oval:org.mitre.oval:def:29158
 
Oval ID: oval:org.mitre.oval:def:29158
Title: HP-UX OpenSSL Vulnerability (Alternative Chain Certificate Forgery)
Description: The X509_verify_cert function in crypto/x509/x509_vfy.c in OpenSSL 1.0.1n, 1.0.1o, 1.0.2b, and 1.0.2c does not properly process X.509 Basic Constraints cA values during identification of alternative certificate chains, which allows remote attackers to spoof a Certification Authority role and trigger unintended certificate verifications via a valid leaf certificate.
Family: unix Class: vulnerability
Reference(s): CVE-2015-1793
 Version: 1
Platform(s): HP-UX 11
 Product(s):
Definition Synopsis:

CPE : Common Platform Enumeration

TypeDescriptionCount
Application 4
Application 2
Application 3

Information Assurance Vulnerability Management (IAVM)

Date Description
2015-08-27 IAVM : 2015-A-0203 - Multiple Cisco Products Certificate Forgery Vulnerability
Severity : Category I - VMSKEY : V0061345
2015-07-09 IAVM : 2015-A-0144 - OpenSSL Certificate Validation Vulnerability
Severity : Category I - VMSKEY : V0061067

Snort® IPS/IDS

Date Description
2015-08-20 OpenSSL alternative chains certificate forgery attempt
RuleID : 35307 - Revision : 2 - Type : SERVER-OTHER
2015-08-11 OpenSSL anomalous x509 certificate with default org name and certificate chai...
RuleID : 35111 - Revision : 5 - Type : SERVER-OTHER

Nessus® Vulnerability Scanner

Date Description
2016-03-24 Name : The remote web server is affected by multiple vulnerabilities.
File : hpsmh_7_5_4.nasl - Type : ACT_GATHER_INFO
2016-01-21 Name : The remote host has an enterprise management application installed that is af...
File : oracle_enterprise_manager_jan_2016_cpu.nasl - Type : ACT_GATHER_INFO
2015-12-21 Name : The remote SUSE host is missing one or more security updates.
File : suse_SU-2015-2303-1.nasl - Type : ACT_GATHER_INFO
2015-12-17 Name : The remote openSUSE host is missing a security update.
File : openSUSE-2015-889.nasl - Type : ACT_GATHER_INFO
2015-10-29 Name : The remote host is missing one or more security updates.
File : mysql_5_6_26_rpm.nasl - Type : ACT_GATHER_INFO
2015-10-22 Name : The remote database server is affected by multiple vulnerabilities.
File : mysql_5_6_27.nasl - Type : ACT_GATHER_INFO
2015-09-23 Name : The remote Gentoo host is missing one or more security-related patches.
File : gentoo_GLSA-201507-15.nasl - Type : ACT_GATHER_INFO
2015-09-23 Name : The management application installed on the remote host is affected by a cert...
File : cisco-sa-CSCuv26213-prsm.nasl - Type : ACT_GATHER_INFO
2015-09-23 Name : The remote security device is missing a vendor-supplied security patch.
File : cisco-sa-CSCuv26213-asa-cx.nasl - Type : ACT_GATHER_INFO
2015-08-28 Name : The remote device is missing a vendor-supplied security patch.
File : cisco-sa-20150710-openssl-VSG.nasl - Type : ACT_GATHER_INFO
2015-08-21 Name : The remote web server is running an application that is affected by multiple ...
File : splunk_625.nasl - Type : ACT_GATHER_INFO
2015-08-20 Name : The remote application is affected by a certificate validation bypass vulnera...
File : securitycenter_openssl_1_0_1p.nasl - Type : ACT_GATHER_INFO
2015-07-14 Name : The remote Fedora host is missing a security update.
File : fedora_2015-11475.nasl - Type : ACT_GATHER_INFO
2015-07-14 Name : The remote Fedora host is missing a security update.
File : fedora_2015-11414.nasl - Type : ACT_GATHER_INFO
2015-07-13 Name : The remote Slackware host is missing a security update.
File : Slackware_SSA_2015-190-01.nasl - Type : ACT_GATHER_INFO
2015-07-13 Name : The remote FreeBSD host is missing one or more security-related updates.
File : freebsd_pkg_075952fe267e11e59d033c970e169bc2.nasl - Type : ACT_GATHER_INFO
2015-07-13 Name : The remote Amazon Linux AMI host is missing a security update.
File : ala_ALAS-2015-564.nasl - Type : ACT_GATHER_INFO
2015-07-09 Name : The remote host is affected by multiple vulnerabilities.
File : openssl_1_0_2d.nasl - Type : ACT_GATHER_INFO
2015-07-09 Name : The remote host is affected by multiple vulnerabilities.
File : openssl_1_0_1p.nasl - Type : ACT_GATHER_INFO

Sources (Detail)

https://git.openssl.org/?p=openssl.git%3Ba=commit%3Bh=9a0db453ba017ebcaccbee9...
Source Url
BID http://www.securityfocus.com/bid/75652
http://www.securityfocus.com/bid/91787
CISCO http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa...
CONFIRM http://fortiguard.com/advisory/2015-07-09-cve-2015-1793-openssl-alternative-c...
http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10694
http://openssl.org/news/secadv_20150709.txt
http://www.fortiguard.com/advisory/2015-07-09-cve-2015-1793-openssl-alternati...
http://www.oracle.com/technetwork/security-advisory/cpuapr2016v3-2985753.html
http://www.oracle.com/technetwork/security-advisory/cpujul2016-2881720.html
http://www.oracle.com/technetwork/security-advisory/cpuoct2016-2881722.html
http://www.oracle.com/technetwork/security-advisory/cpuoct2017-3236626.html
http://www.oracle.com/technetwork/topics/security/bulletinjul2015-2511963.html
http://www.oracle.com/technetwork/topics/security/cpujan2016-2367955.html
http://www.oracle.com/technetwork/topics/security/cpuoct2015-2367953.html
http://www1.huawei.com/en/security/psirt/security-bulletins/security-advisori...
https://h20564.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_n...
https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_n...
https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_n...
https://help.ecostruxureit.com/display/public/UADCO8x/StruxureWare+Data+Cente...
https://kc.mcafee.com/corporate/index?page=content&id=SB10125
EXPLOIT-DB https://www.exploit-db.com/exploits/38640/
FEDORA http://lists.fedoraproject.org/pipermail/package-announce/2015-July/161747.html
http://lists.fedoraproject.org/pipermail/package-announce/2015-July/161782.html
FREEBSD https://www.freebsd.org/security/advisories/FreeBSD-SA-15:12.openssl.asc
GENTOO https://security.gentoo.org/glsa/201507-15
HP http://marc.info/?l=bugtraq&m=143880121627664&w=2
http://marc.info/?l=bugtraq&m=144370846326989&w=2
NETBSD http://ftp.netbsd.org/pub/NetBSD/security/advisories/NetBSD-SA2015-008.txt.asc
SECTRACK http://www.securitytracker.com/id/1032817
SLACKWARE http://www.slackware.com/security/viewer.php?l=slackware-security&y=2015&...

Alert History

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Date Informations
2023-11-07 21:44:40
  • Multiple Updates
2021-05-04 12:38:41
  • Multiple Updates
2021-04-22 01:47:24
  • Multiple Updates
2020-05-23 01:55:08
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2020-05-23 00:44:33
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2019-03-19 12:07:00
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2018-12-01 00:18:57
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2017-10-20 09:23:00
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2017-09-14 09:21:03
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2016-12-29 13:20:14
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2016-12-28 09:22:04
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2016-12-24 09:24:10
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2016-12-22 09:23:54
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2016-12-08 09:23:40
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2016-12-07 21:24:34
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2016-12-03 09:24:07
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2016-11-29 00:25:06
  • Multiple Updates
2016-10-26 09:22:45
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2016-10-18 12:04:25
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2016-08-23 09:24:53
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2016-08-17 09:23:50
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2016-08-09 09:24:05
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2016-07-22 12:03:23
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2016-04-25 21:26:32
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2016-04-22 09:25:25
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2016-04-12 00:25:05
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2016-04-07 09:21:50
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2016-03-25 13:26:21
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2016-01-22 13:25:35
  • Multiple Updates
2016-01-22 09:22:24
  • Multiple Updates
2015-12-22 13:25:21
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2015-12-18 13:27:33
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2015-11-24 21:28:02
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2015-10-30 13:24:08
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2015-10-23 13:20:14
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2015-10-23 09:23:42
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2015-10-21 09:22:34
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2015-10-20 16:20:03
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2015-10-18 17:27:17
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2015-10-18 17:23:44
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2015-09-24 13:24:00
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2015-09-02 21:27:11
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2015-08-29 13:33:51
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2015-08-26 09:30:19
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2015-08-22 13:31:02
  • Multiple Updates
2015-08-21 13:20:16
  • Multiple Updates
2015-08-20 21:27:34
  • Multiple Updates
2015-08-11 21:22:52
  • Multiple Updates
2015-07-18 13:28:35
  • Multiple Updates
2015-07-16 09:29:49
  • Multiple Updates
2015-07-10 17:26:18
  • Multiple Updates
2015-07-10 00:25:58
  • First insertion