Medium severity · published Jul 9, 2015
CVE-2015-1793
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…
6.5
CVSS
58.2%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
Low
Integrity
Low
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)58.2% · higher than 99% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
JE
JD Edwards Enterpriseone Tools · Oracle
9.1; 9.2 · source: NVD
OP
Openssl · Openssl
1.0.1n; 1.0.1o; 1.0.2b; 1.0.2c · source: NVD
O1
Opus 10g Ethernet Switch Family · Oracle
through 2.0.0.6 · source: NVD
SC
Supply Chain Products Suite · Oracle
6.1.2.2; 6.1.3.0; 6.2.0 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2015-1793
CVE.org
https://www.cve.org/CVERecord?id=CVE-2015-1793
fortiguard.com
http://fortiguard.com/advisory/2015-07-09-cve-2015-1793-openssl-alternative-chains-certificate-forgery
ftp.netbsd.org
http://ftp.netbsd.org/pub/NetBSD/security/advisories/NetBSD-SA2015-008.txt.asc
kb.juniper.net
http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10694
lists.fedoraproject.org
http://lists.fedoraproject.org/pipermail/package-announce/2015-July/161747.html
lists.fedoraproject.org
http://lists.fedoraproject.org/pipermail/package-announce/2015-July/161782.html
marc.info
http://marc.info/?l=bugtraq&m=143880121627664&w=2
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