Ubuntu.comUB:CVE-2015-1793CVE-2015-1793
6.4 Medium
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
NONE
AV:N/AC:L/Au:N/C:P/I:P/A:N
6.5 Medium
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
NONE
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
0.105 Low
EPSS
Percentile
95.0%
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.
Notes
| Author | Note |
|---|---|
| mdeslaur | introduced by the following commit in 1.0.2b and 1.0.1n: https://git.openssl.org/?p=openssl.git;a=commit;h=6281abc79623419eae6a64768c478272d5d3a426 |
Related
6.4 Medium
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
NONE
AV:N/AC:L/Au:N/C:P/I:P/A:N
6.5 Medium
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
NONE
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
0.105 Low
EPSS
Percentile
95.0%