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CVE-2015-1793Date: (C)2015-07-10   (M)2024-02-22


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.

CVSS Score and Metrics +CVSS Score and Metrics -

CVSS V3 Severity:CVSS V2 Severity:
CVSS Score : 6.5CVSS Score : 6.4
Exploit Score: 3.9Exploit Score: 10.0
Impact Score: 2.5Impact Score: 4.9
 
CVSS V3 Metrics:CVSS V2 Metrics:
Attack Vector: NETWORKAccess Vector: NETWORK
Attack Complexity: LOWAccess Complexity: LOW
Privileges Required: NONEAuthentication: NONE
User Interaction: NONEConfidentiality: PARTIAL
Scope: UNCHANGEDIntegrity: PARTIAL
Confidentiality: LOWAvailability: NONE
Integrity: LOW 
Availability: NONE 
  
Reference:
SECTRACK-1032817
http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20150710-openssl
EXPLOIT-DB-38640
BID-75652
BID-91787
FEDORA-2015-11414
FEDORA-2015-11475
FreeBSD-SA-15:12
GLSA-201507-15
HPSBGN03424
NetBSD-SA2015-008
SSA:2015-190-01
SSRT102180
http://fortiguard.com/advisory/2015-07-09-cve-2015-1793-openssl-alternative-chains-certificate-forgery
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-alternative-chains-certificate-forgery
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-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

CPE    9
cpe:/a:openssl:openssl:1.0.1o
cpe:/a:openssl:openssl:1.0.1n
cpe:/a:openssl:openssl:1.0.2b
cpe:/a:openssl:openssl:1.0.2c
...
CWE    1
CWE-254
OVAL    5
oval:org.secpod.oval:def:25321
oval:org.secpod.oval:def:1200138
oval:org.secpod.oval:def:109274
oval:org.secpod.oval:def:109268
...

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