6.5
MEDIUM
CVE-2015-1793
OpenSSL X509 Verify Basic Constraints Spoofing
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.

INFO

Published Date :

July 9, 2015, 7:17 p.m.

Last Modified :

Nov. 7, 2023, 2:24 a.m.

Source :

[email protected]

Remotely Exploitable :

Yes !

Impact Score :

2.5

Exploitability Score :

3.9
Public PoC/Exploit Available at Github

CVE-2015-1793 has a 1 public PoC/Exploit available at Github. Go to the Public Exploits tab to see the list.

Affected Products

The following products are affected by CVE-2015-1793 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Oracle jd_edwards_enterpriseone_tools
2 Oracle supply_chain_products_suite
3 Oracle opus_10g_ethernet_switch_family
1 Openssl openssl
: Total Affected Vendor : 2 | Products : 4
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2015-1793.

URL Resource
http://fortiguard.com/advisory/2015-07-09-cve-2015-1793-openssl-alternative-chains-certificate-forgery
http://ftp.netbsd.org/pub/NetBSD/security/advisories/NetBSD-SA2015-008.txt.asc
http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10694
http://lists.fedoraproject.org/pipermail/package-announce/2015-July/161747.html
http://lists.fedoraproject.org/pipermail/package-announce/2015-July/161782.html
http://marc.info/?l=bugtraq&m=143880121627664&w=2
http://marc.info/?l=bugtraq&m=144370846326989&w=2
http://openssl.org/news/secadv_20150709.txt Vendor Advisory
http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20150710-openssl
http://www.fortiguard.com/advisory/2015-07-09-cve-2015-1793-openssl-alternative-chains-certificate-forgery
http://www.oracle.com/technetwork/security-advisory/cpuapr2016v3-2985753.html Patch
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 Patch
http://www.oracle.com/technetwork/topics/security/cpuoct2015-2367953.html Patch
http://www.securityfocus.com/bid/75652
http://www.securityfocus.com/bid/91787
http://www.securitytracker.com/id/1032817
http://www.slackware.com/security/viewer.php?l=slackware-security&y=2015&m=slackware-security.561427
http://www1.huawei.com/en/security/psirt/security-bulletins/security-advisories/hw-454058.htm
https://git.openssl.org/?p=openssl.git%3Ba=commit%3Bh=9a0db453ba017ebcaccbee933ee6511a9ae4d1c8
https://h20564.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c04822825
https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05045763
https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05184351
https://help.ecostruxureit.com/display/public/UADCO8x/StruxureWare+Data+Center+Operation+Software+Vulnerability+Fixes
https://kc.mcafee.com/corporate/index?page=content&id=SB10125
https://security.gentoo.org/glsa/201507-15
https://www.exploit-db.com/exploits/38640/
https://www.freebsd.org/security/advisories/FreeBSD-SA-15:12.openssl.asc

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Profile Photo
chnzzh/OpenSSL-CVE-lib

None

Updated: 2 months ago
5 stars 0 fork 0 watcher
Born at : Feb. 23, 2023, 5:42 a.m. This repo has been linked 455 different CVEs too.

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2015-1793 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2015-1793 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • CVE Modified by [email protected]

    Nov. 07, 2023

    Action Type Old Value New Value
    Added Reference Red Hat, Inc. https://git.openssl.org/?p=openssl.git%3Ba=commit%3Bh=9a0db453ba017ebcaccbee933ee6511a9ae4d1c8 [No types assigned]
    Removed Reference Red Hat, Inc. https://git.openssl.org/?p=openssl.git;a=commit;h=9a0db453ba017ebcaccbee933ee6511a9ae4d1c8
  • CVE Modified by [email protected]

    Nov. 30, 2018

    Action Type Old Value New Value
    Added Reference https://help.ecostruxureit.com/display/public/UADCO8x/StruxureWare+Data+Center+Operation+Software+Vulnerability+Fixes [No Types Assigned]
  • CVE Modified by [email protected]

    Oct. 20, 2017

    Action Type Old Value New Value
    Added Reference http://www.oracle.com/technetwork/security-advisory/cpuoct2017-3236626.html [No Types Assigned]
  • CVE Modified by [email protected]

    Sep. 14, 2017

    Action Type Old Value New Value
    Added Reference https://www.exploit-db.com/exploits/38640/ [No Types Assigned]
  • CVE Modified by [email protected]

    Dec. 28, 2016

    Action Type Old Value New Value
    Added Reference https://www.freebsd.org/security/advisories/FreeBSD-SA-15:12.openssl.asc [No Types Assigned]
    Added Reference http://www.slackware.com/security/viewer.php?l=slackware-security&y=2015&m=slackware-security.561427 [No Types Assigned]
    Added Reference http://www.securitytracker.com/id/1032817 [No Types Assigned]
    Added Reference http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20150710-openssl [No Types Assigned]
    Added Reference http://lists.fedoraproject.org/pipermail/package-announce/2015-July/161782.html [No Types Assigned]
    Added Reference http://lists.fedoraproject.org/pipermail/package-announce/2015-July/161747.html [No Types Assigned]
  • CVE Modified by [email protected]

    Dec. 24, 2016

    Action Type Old Value New Value
    Added Reference http://ftp.netbsd.org/pub/NetBSD/security/advisories/NetBSD-SA2015-008.txt.asc [No Types Assigned]
  • CVE Modified by [email protected]

    Dec. 22, 2016

    Action Type Old Value New Value
    Added Reference https://security.gentoo.org/glsa/201507-15 [No Types Assigned]
  • CVE Modified by [email protected]

    Dec. 08, 2016

    Action Type Old Value New Value
    Added Reference http://www.fortiguard.com/advisory/2015-07-09-cve-2015-1793-openssl-alternative-chains-certificate-forgery [No Types Assigned]
    Added Reference https://h20564.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c04822825 [No Types Assigned]
    Added Reference https://kc.mcafee.com/corporate/index?page=content&id=SB10125 [No Types Assigned]
  • CVE Modified by [email protected]

    Dec. 07, 2016

    Action Type Old Value New Value
    Added Reference http://www1.huawei.com/en/security/psirt/security-bulletins/security-advisories/hw-454058.htm [No Types Assigned]
  • CVE Modified by [email protected]

    Dec. 03, 2016

    Action Type Old Value New Value
    Added Reference http://fortiguard.com/advisory/2015-07-09-cve-2015-1793-openssl-alternative-chains-certificate-forgery [No Types Assigned]
  • CVE Modified by [email protected]

    Nov. 28, 2016

    Action Type Old Value New Value
    Added Reference http://www.securityfocus.com/bid/75652 [No Types Assigned]
  • CVE Modified by [email protected]

    Oct. 26, 2016

    Action Type Old Value New Value
    Added Reference http://www.oracle.com/technetwork/security-advisory/cpuoct2016-2881722.html
  • CVE Modified by [email protected]

    Oct. 18, 2016

    Action Type Old Value New Value
    Added Reference http://www.oracle.com/technetwork/topics/security/bulletinjul2015-2511963.html
  • CVE Modified by [email protected]

    Aug. 23, 2016

    Action Type Old Value New Value
    Added Reference http://marc.info/?l=bugtraq&m=144370846326989&w=2
  • CVE Modified by [email protected]

    Aug. 17, 2016

    Action Type Old Value New Value
    Added Reference https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05184351
    Added Reference https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05045763
  • CVE Modified by [email protected]

    Aug. 09, 2016

    Action Type Old Value New Value
    Added Reference http://www.securityfocus.com/bid/91787
  • CVE Modified by [email protected]

    Jul. 22, 2016

    Action Type Old Value New Value
    Added Reference http://www.oracle.com/technetwork/security-advisory/cpujul2016-2881720.html
  • Modified Analysis by [email protected]

    Apr. 25, 2016

    Action Type Old Value New Value
    Changed CPE Configuration Configuration 1 OR *cpe:2.3:a:oracle:supply_chain_products_suite:6.1.2.2:*:*:*:*:*:*:* *cpe:2.3:a:oracle:supply_chain_products_suite:6.1.3.0:*:*:*:*:*:*:* *cpe:2.3:a:oracle:supply_chain_products_suite:6.2.0:*:*:*:*:*:*:* Configuration 2 OR *cpe:2.3:a:openssl:openssl:1.0.1n:*:*:*:*:*:*:* *cpe:2.3:a:openssl:openssl:1.0.1o:*:*:*:*:*:*:* *cpe:2.3:a:openssl:openssl:1.0.2b:*:*:*:*:*:*:* *cpe:2.3:a:openssl:openssl:1.0.2c:*:*:*:*:*:*:* Configuration 1 OR *cpe:2.3:a:oracle:supply_chain_products_suite:6.1.2.2:*:*:*:*:*:*:* *cpe:2.3:a:oracle:supply_chain_products_suite:6.1.3.0:*:*:*:*:*:*:* *cpe:2.3:a:oracle:supply_chain_products_suite:6.2.0:*:*:*:*:*:*:* Configuration 2 OR *cpe:2.3:a:oracle:jd_edwards_enterpriseone_tools:9.2:*:*:*:*:*:*:* *cpe:2.3:a:oracle:jd_edwards_enterpriseone_tools:9.1:*:*:*:*:*:*:* Configuration 3 OR *cpe:2.3:a:openssl:openssl:1.0.1n:*:*:*:*:*:*:* *cpe:2.3:a:openssl:openssl:1.0.1o:*:*:*:*:*:*:* *cpe:2.3:a:openssl:openssl:1.0.2b:*:*:*:*:*:*:* *cpe:2.3:a:openssl:openssl:1.0.2c:*:*:*:*:*:*:* Configuration 4 OR *cpe:2.3:o:oracle:opus_10g_ethernet_switch_family:2.0.0.6:*:*:*:*:*:*:* (and previous)
    Added CVSS V3 AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
    Changed Reference Type http://www.oracle.com/technetwork/topics/security/cpuoct2015-2367953.html No Types Assigned http://www.oracle.com/technetwork/topics/security/cpuoct2015-2367953.html Patch
    Changed Reference Type http://www.oracle.com/technetwork/topics/security/cpujan2016-2367955.html Advisory, Patch http://www.oracle.com/technetwork/topics/security/cpujan2016-2367955.html Patch
    Changed Reference Type http://www.oracle.com/technetwork/security-advisory/cpuapr2016v3-2985753.html No Types Assigned http://www.oracle.com/technetwork/security-advisory/cpuapr2016v3-2985753.html Patch
  • CVE Modified by [email protected]

    Apr. 22, 2016

    Action Type Old Value New Value
    Added Reference http://www.oracle.com/technetwork/security-advisory/cpuapr2016v3-2985753.html
  • Modified Analysis by [email protected]

    Apr. 11, 2016

    Action Type Old Value New Value
    Changed Reference Type http://www.oracle.com/technetwork/topics/security/cpujan2016-2367955.html No Types Assigned http://www.oracle.com/technetwork/topics/security/cpujan2016-2367955.html Advisory, Patch
  • CVE Modified by [email protected]

    Apr. 07, 2016

    Action Type Old Value New Value
    Removed Reference http://www.oracle.com/technetwork/topics/security/alerts-086861.html
    Added Reference http://www.oracle.com/technetwork/topics/security/cpuoct2015-2367953.html
  • CVE Modified by [email protected]

    Jan. 22, 2016

    Action Type Old Value New Value
    Added Reference http://www.oracle.com/technetwork/topics/security/cpujan2016-2367955.html
  • Modified Analysis by [email protected]

    Nov. 24, 2015

    Action Type Old Value New Value
    Changed CPE Configuration Configuration 1 OR *cpe:2.3:a:openssl:openssl:1.0.1n:*:*:*:*:*:*:* *cpe:2.3:a:openssl:openssl:1.0.1o:*:*:*:*:*:*:* *cpe:2.3:a:openssl:openssl:1.0.2b:*:*:*:*:*:*:* *cpe:2.3:a:openssl:openssl:1.0.2c:*:*:*:*:*:*:* Configuration 1 OR *cpe:2.3:a:oracle:supply_chain_products_suite:6.1.2.2:*:*:*:*:*:*:* *cpe:2.3:a:oracle:supply_chain_products_suite:6.1.3.0:*:*:*:*:*:*:* *cpe:2.3:a:oracle:supply_chain_products_suite:6.2.0:*:*:*:*:*:*:* Configuration 2 OR *cpe:2.3:a:openssl:openssl:1.0.1n:*:*:*:*:*:*:* *cpe:2.3:a:openssl:openssl:1.0.1o:*:*:*:*:*:*:* *cpe:2.3:a:openssl:openssl:1.0.2b:*:*:*:*:*:*:* *cpe:2.3:a:openssl:openssl:1.0.2c:*:*:*:*:*:*:*
  • CVE Modified by [email protected]

    Oct. 23, 2015

    Action Type Old Value New Value
    Added Reference http://www.oracle.com/technetwork/topics/security/alerts-086861.html
  • CVE Modified by [email protected]

    Oct. 21, 2015

    Action Type Old Value New Value
    Added Reference http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10694
  • CVE Modified by [email protected]

    Aug. 26, 2015

    Action Type Old Value New Value
    Added Reference http://marc.info/?l=bugtraq&m=143880121627664&w=2
  • CVE Translated by [email protected]

    Jul. 17, 2015

    Action Type Old Value New Value
    Changed Translation Vulnerabilidad en OpenSSL (CVE-2015-1793) OpenSSL
  • CVE Translated by [email protected]

    Jul. 16, 2015

    Action Type Old Value New Value
    Removed Translation La función de verificación de certificado X509 en crypto/x509/x509_vfy.c en OpenSSL 1.0.1n, 1.0.1o, 1.0.2b, y 1.0.2c no procesa correctamente los valores cA de restricción básica del X.509 durante la identificación de cadenas de certificado alternativo, lo que permite a atacantes remotos suplantar una función de autoridad de certificación y propiciar verificaciones de certificado involuntarias a traves de un leaf certificate válido.
    Added Translation La función de verificación de certificado X509 en crypto/x509/x509_vfy.c en OpenSSL 1.0.1n, 1.0.1o, 1.0.2b, y 1.0.2c no procesa correctamente los valores cA de restricción básica del X.509 durante la identificación de cadenas de certificado alternativo, lo que permite a atacantes remotos suplantar una función de autoridad de certificación y propiciar verificaciones de certificado involuntarias a través de un leaf certificate válido.
  • Modified Analysis by [email protected]

    Jul. 10, 2015

    Action Type Old Value New Value
    Added CPE Configuration Configuration 1 OR *cpe:2.3:a:openssl:openssl:1.0.1n:*:*:*:*:*:*:* *cpe:2.3:a:openssl:openssl:1.0.1o:*:*:*:*:*:*:* *cpe:2.3:a:openssl:openssl:1.0.2b:*:*:*:*:*:*:* *cpe:2.3:a:openssl:openssl:1.0.2c:*:*:*:*:*:*:*
    Added CVSS V2 (AV:N/AC:L/Au:N/C:P/I:P/A:N)
    Changed Reference Type http://openssl.org/news/secadv_20150709.txt No Types Assigned http://openssl.org/news/secadv_20150709.txt Advisory
    Changed Reference Type https://git.openssl.org/?p=openssl.git;a=commit;h=9a0db453ba017ebcaccbee933ee6511a9ae4d1c8 No Types Assigned https://git.openssl.org/?p=openssl.git;a=commit;h=9a0db453ba017ebcaccbee933ee6511a9ae4d1c8 Advisory
    Added CWE CWE-254
  • Initial Analysis by [email protected]

    Jul. 09, 2015

    Action Type Old Value New Value
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2015-1793 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2015-1793 weaknesses.

Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

8.76 }} -1.77%

score

0.94652

percentile

CVSS30 - Vulnerability Scoring System
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
: