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…

published July 9, 2015

Patch now

High probability of exploitation

NVD has not assigned a CVSS score to this record. It sits in the 99.1th percentile for exploit probability.

CVSS
—
EPSS
58%
Percentile
99.1
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS
Not scored
CVSS v4.0
Not supplied
EPSS
0.58213 · 99.1th percentile
Published
2015-07-09T19:00Z
EPSS history
Timeline
  • 09 JUL 19:00Z
    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…
    cvelistv5