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Linux Distros Unpatched Vulnerability : CVE-2015-1855

medium Nessus Plugin ID 218643

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Synopsis

The Linux/Unix host has one or more packages installed with a vulnerability that the vendor indicates will not be patched.

Description

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

 - 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. (CVE-2015-1855)

Note that Nessus relies on the presence of the package as reported by the vendor.

Solution

There is no known solution at this time.

See Also

https://access.redhat.com/security/cve/cve-2015-1855

Plugin Details

Severity: Medium

ID: 218643

File Name: unpatched_CVE_2015_1855.nasl

Version: 1.2

Type: local

Agent: unix

Family: Misc.

Published: 3/4/2025

Updated: 9/3/2025

Supported Sensors: Frictionless Assessment AWS, Frictionless Assessment Azure, Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.4

CVSS v2

Risk Factor: Medium

Base Score: 4.3

Temporal Score: 3.4

Vector: CVSS2#AV:N/AC:M/Au:N/C:N/I:P/A:N

CVSS Score Source: CVE-2015-1855

CVSS v3

Risk Factor: Medium

Base Score: 5.9

Temporal Score: 5.3

Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N

Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:redhat:enterprise_linux:ruby-ri, p-cpe:/a:redhat:enterprise_linux:rubygem-rake, p-cpe:/a:centos:centos:ruby-irb, p-cpe:/a:redhat:enterprise_linux:ruby-static, p-cpe:/a:redhat:enterprise_linux:rubygem-rdoc, p-cpe:/a:centos:centos:rubygem-rdoc, cpe:/o:redhat:enterprise_linux:5, p-cpe:/a:redhat:enterprise_linux:ruby-devel, p-cpe:/a:centos:centos:ruby-devel, p-cpe:/a:redhat:enterprise_linux:ruby-tcltk, cpe:/o:centos:centos:7, p-cpe:/a:redhat:enterprise_linux:rubygem-json, p-cpe:/a:redhat:enterprise_linux:ruby-docs, p-cpe:/a:centos:centos:ruby-docs, p-cpe:/a:centos:centos:rubygem-bigdecimal, p-cpe:/a:redhat:enterprise_linux:rubygems, p-cpe:/a:centos:centos:ruby, p-cpe:/a:centos:centos:rubygems, p-cpe:/a:redhat:enterprise_linux:rubygem-psych, p-cpe:/a:redhat:enterprise_linux:rubygem-bigdecimal, cpe:/o:redhat:enterprise_linux:7, p-cpe:/a:centos:centos:rubygem-json, p-cpe:/a:centos:centos:ruby-ri, p-cpe:/a:redhat:enterprise_linux:ruby-doc, p-cpe:/a:centos:centos:rubygem-rake, p-cpe:/a:centos:centos:rubygem-minitest, p-cpe:/a:redhat:enterprise_linux:rubygems-devel, p-cpe:/a:redhat:enterprise_linux:ruby, p-cpe:/a:centos:centos:rubygem-psych, p-cpe:/a:redhat:enterprise_linux:rubygem-io-console, p-cpe:/a:redhat:enterprise_linux:ruby-rdoc, p-cpe:/a:centos:centos:ruby-doc, p-cpe:/a:redhat:enterprise_linux:rubygem-minitest, p-cpe:/a:centos:centos:rubygem-io-console, p-cpe:/a:centos:centos:ruby-rdoc, p-cpe:/a:redhat:enterprise_linux:ruby-libs, p-cpe:/a:centos:centos:rubygems-devel, p-cpe:/a:redhat:enterprise_linux:ruby-irb, p-cpe:/a:centos:centos:ruby-libs, p-cpe:/a:centos:centos:ruby-static, cpe:/o:redhat:enterprise_linux:6, p-cpe:/a:centos:centos:ruby-tcltk

Required KB Items: Host/local_checks_enabled, Host/cpu, global_settings/vendor_unpatched, Host/OS/identifier

Exploit Available: true

Exploit Ease: Exploits are available

Vulnerability Publication Date: 4/16/2015

Reference Information

CVE: CVE-2015-1855