Instituto Nacional de ciberseguridad. Sección Incibe
Instituto Nacional de Ciberseguridad. Sección INCIBE-CERT

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CVE-2015-1855

Severity CVSS v4.0:
Pending analysis
Type:
CWE-20 Input Validation
Publication date:
29/11/2019
Last modified:
30/09/2020

Description

verify_certificate_identity in the OpenSSL extension in Ruby before 2.0.0 patchlevel 645, 2.1.x before 2.1.6, and 2.2.x before 2.2.2 does not properly validate hostnames, which allows remote attackers to spoof servers via vectors related to (1) multiple wildcards, (1) wildcards in IDNA names, (3) case sensitivity, and (4) non-ASCII characters.

Impact

Vector 3.x
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N CVSS v3.1 Severity and Metrics:

Base Score: 5.90 MEDIUM
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N

Attack Vector (AV): Network
Attack Complexity (AC): High
Privileges Required (PR): None
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): None
Integrity (I): High
Availability (A): None

Base Score 3.x
5.90
Severity 3.x
MEDIUM
Vector 2.0
AV:N/AC:M/Au:N/C:N/I:P/A:N CVSS v2.0 Severity and Metrics:

Base Score: 4.30 MEDIUM
Vector: AV:N/AC:M/Au:N/C:N/I:P/A:N

Attack Vector (AV): Network
Attack Complexity (AC): Medium
Authentication (Au): None
Confidentiality (C): None
Integrity (I): Physical
Availability (A): None

Base Score 2.0
4.30
Severity 2.0
MEDIUM

Vulnerable products and versions

CPE From Up to
cpe:2.3:a:ruby-lang:ruby:*:*:*:*:*:*:*:* 2.1.0 (including) 2.1.6 (excluding)
cpe:2.3:a:ruby-lang:ruby:*:*:*:*:*:*:*:* 2.2.0 (including) 2.2.2 (excluding)
cpe:2.3:a:ruby-lang:ruby:2.0.0:-:*:*:*:*:*:*
cpe:2.3:a:ruby-lang:ruby:2.0.0:p0:*:*:*:*:*:*
cpe:2.3:a:ruby-lang:ruby:2.0.0:p195:*:*:*:*:*:*
cpe:2.3:a:ruby-lang:ruby:2.0.0:p247:*:*:*:*:*:*
cpe:2.3:a:ruby-lang:ruby:2.0.0:p353:*:*:*:*:*:*
cpe:2.3:a:ruby-lang:ruby:2.0.0:p451:*:*:*:*:*:*
cpe:2.3:a:ruby-lang:ruby:2.0.0:p481:*:*:*:*:*:*
cpe:2.3:a:ruby-lang:ruby:2.0.0:p576:*:*:*:*:*:*
cpe:2.3:a:ruby-lang:ruby:2.0.0:p594:*:*:*:*:*:*
cpe:2.3:a:ruby-lang:ruby:2.0.0:p598:*:*:*:*:*:*
cpe:2.3:a:ruby-lang:ruby:2.0.0:p643:*:*:*:*:*:*
cpe:2.3:a:ruby-lang:trunk:*:*:*:*:*:*:*:* 50292 (excluding)
cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:*

To consult the complete list of CPE names with products and versions, see this page


References to Advisories, Solutions, and Tools