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CVE-2015-1793

Good to know:

Date: July 9, 2015

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.

Language: C

Severity Score

6.5

Related Resources (34)

Url: https://git.openssl.org/?p=openssl.git%3Ba=commit%3Bh=9a0db453ba017ebcaccbee933ee6511a9ae4d1c8

Url: http://marc.info/?l=bugtraq&m=144370846326989&w=2

Url: http://www.securitytracker.com/id/1032817

Url: http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10694

Url: http://www.oracle.com/technetwork/security-advisory/cpujul2016-2881720.html

Url: http://www.oracle.com/technetwork/topics/security/cpuoct2015-2367953.html

Url: http://openssl.org/news/secadv_20150709.txt

Url: https://help.ecostruxureit.com/display/public/UADCO8x/StruxureWare+Data+Center+Operation+Software+Vulnerability+Fixes

Url: https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05045763

Url: http://marc.info/?l=bugtraq&m=143880121627664&w=2

Url: http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20150710-openssl

Url: http://www.oracle.com/technetwork/security-advisory/cpuoct2017-3236626.html

Url: http://www.slackware.com/security/viewer.php?l=slackware-security&y=2015&m=slackware-security.561427

Url: https://nvd.nist.gov/vuln/detail/CVE-2015-1793

Url: http://www1.huawei.com/en/security/psirt/security-bulletins/security-advisories/hw-454058.htm

Url: https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05184351

Url: https://www.exploit-db.com/exploits/38640/

Url: https://security.gentoo.org/glsa/201507-15

Url: http://www.oracle.com/technetwork/topics/security/cpujan2016-2367955.html

Url: https://kc.mcafee.com/corporate/index?page=content&id=SB10125

Url: http://www.oracle.com/technetwork/security-advisory/cpuoct2016-2881722.html

Url: https://security-tracker.debian.org/tracker/CVE-2015-1793

Url: http://www.oracle.com/technetwork/topics/security/bulletinjul2015-2511963.html

Url: http://ftp.netbsd.org/pub/NetBSD/security/advisories/NetBSD-SA2015-008.txt.asc

Url: http://www.securityfocus.com/bid/91787

Url: http://www.securityfocus.com/bid/75652

Url: http://www.oracle.com/technetwork/security-advisory/cpuapr2016v3-2985753.html

Url: http://www.fortiguard.com/advisory/2015-07-09-cve-2015-1793-openssl-alternative-chains-certificate-forgery

Url: http://lists.fedoraproject.org/pipermail/package-announce/2015-July/161782.html

Url: http://fortiguard.com/advisory/2015-07-09-cve-2015-1793-openssl-alternative-chains-certificate-forgery

Url: https://h20564.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c04822825

Url: http://lists.fedoraproject.org/pipermail/package-announce/2015-July/161747.html

Url: https://www.freebsd.org/security/advisories/FreeBSD-SA-15:12.openssl.asc

Url: https://www.mend.io/vulnerability-database/CVE-2015-1793

Severity Score

6.5

Weakness Type (CWE)

Security Features

CWE-254

Top Fix

Upgrade Version

Upgrade to version 1.0.1p, 1.0.2d

Learn More

CVSS v3.1

Base Score:	6.5
Attack Vector (AV):	NETWORK
Attack Complexity (AC):	LOW
Privileges Required (PR):	NONE
User Interaction (UI):	NONE
Scope (S):	UNCHANGED
Confidentiality (C):	LOW
Integrity (I):	LOW
Availability (A):	NONE

CVSS v2

Base Score:	6.4
Access Vector (AV):	NETWORK
Access Complexity (AC):	LOW
Authentication (AU):	NONE
Confidentiality (C):	PARTIAL
Integrity (I):	PARTIAL
Availability (A):	NONE
Additional information:

Mend.io Vulnerability Database

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CVE-2015-1793

Good to know:

Date: July 9, 2015

Language: C

Severity Score

Related Resources (34)

Severity Score

Weakness Type (CWE)

Top Fix

Upgrade Version

CVSS v3.1

CVSS v2

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