CVE-2015-1855

medium
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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.

References

http://www.debian.org/security/2015/dsa-3245

http://www.debian.org/security/2015/dsa-3246

http://www.debian.org/security/2015/dsa-3247

https://bugs.ruby-lang.org/issues/9644

https://puppetlabs.com/security/cve/cve-2015-1855

https://www.ruby-lang.org/en/news/2015/04/13/ruby-openssl-hostname-matching-vulnerability/

Details

Source: MITRE

Published: 2019-11-29

Updated: 2019-12-17

Type: CWE-20

Risk Information

CVSS v2

Base Score: 4.3

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

Impact Score: 2.9

Exploitability Score: 8.6

Severity: MEDIUM

CVSS v3

Base Score: 5.9

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

Impact Score: 3.6

Exploitability Score: 2.2

Severity: MEDIUM

Tenable Plugins

View all (20 total)

IDNameProductFamilySeverity
101974Ubuntu 14.04 LTS / 16.04 LTS / 17.04 : ruby1.9.1, ruby2.0, ruby2.3 vulnerabilities (USN-3365-1)NessusUbuntu Local Security Checks
critical
99753openSUSE Security Update : ruby2.1 (openSUSE-2017-527)NessusSuSE Local Security Checks
critical
99578SUSE SLED12 / SLES12 Security Update : ruby2.1 (SUSE-SU-2017:1067-1)NessusSuSE Local Security Checks
critical
99242SUSE SLES11 Security Update : ruby (SUSE-SU-2017:0948-1)NessusSuSE Local Security Checks
high
8982Mac OS X < 10.11 Multiple VulnerabilitiesNessus Network MonitorOperating System Detection
critical
86270Mac OS X < 10.11 Multiple Vulnerabilities (GHOST)NessusMacOS X Local Security Checks
critical
83907Debian DLA-235-1 : ruby1.9.1 security updateNessusDebian Local Security Checks
medium
83885Amazon Linux AMI : ruby22 (ALAS-2015-533)NessusAmazon Linux Local Security Checks
medium
83884Amazon Linux AMI : ruby21 (ALAS-2015-532)NessusAmazon Linux Local Security Checks
medium
83883Amazon Linux AMI : ruby20 (ALAS-2015-531)NessusAmazon Linux Local Security Checks
medium
83882Amazon Linux AMI : ruby19 (ALAS-2015-530)NessusAmazon Linux Local Security Checks
medium
83881Amazon Linux AMI : ruby18 (ALAS-2015-529)NessusAmazon Linux Local Security Checks
medium
83531Debian DLA-224-1 : ruby1.8 security updateNessusDebian Local Security Checks
medium
83248Mandriva Linux Security Advisory : ruby (MDVSA-2015:224)NessusMandriva Local Security Checks
high
83233Debian DSA-3247-1 : ruby2.1 - security updateNessusDebian Local Security Checks
medium
83232Debian DSA-3246-1 : ruby1.9.1 - security updateNessusDebian Local Security Checks
medium
83231Debian DSA-3245-1 : ruby1.8 - security updateNessusDebian Local Security Checks
medium
83125Fedora 21 : ruby-2.1.6-27.fc21 (2015-6377)NessusFedora Local Security Checks
medium
83043Fedora 22 : ruby-2.2.2-11.fc22 (2015-6238)NessusFedora Local Security Checks
medium
82753FreeBSD : Ruby -- OpenSSL Hostname Verification Vulnerability (d4379f59-3e9b-49eb-933b-61de4d0b0fdb)NessusFreeBSD Local Security Checks
medium