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OpenSSL Alternative chains certificate forgery (CVE-2015-1793)

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OpenSSL Alternative chains certificate forgery (CVE-2015-1793)

Severity
6
CVSS
(AV:N/AC:L/Au:N/C:P/I:P/A:N)
Published
01/05/2012
Created
07/25/2018
Added
05/03/2018
Modified
05/04/2018

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.

Solution(s)

  • http-openssl-upgrade-1_0_1p
  • http-openssl-upgrade-1_0_2d

References

  • http-openssl-upgrade-1_0_1p
  • http-openssl-upgrade-1_0_2d

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