Improper input validation in Puppet Agent
CVE-2015-1855
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.
Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)
EPSS: 0.028 (85.6th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 5.9 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N.
Affected products
- Puppet Puppet_agent — versions 1.0.0
- Puppet Puppet_enterprise
- Ruby — versions and 2.2.x before 2.2.2, 2.1.x before 2.1.6, before 2.0.0 patchlevel 645
- Ruby-lang Ruby — versions 2.0.0
- Ruby-lang Trunk
- Debian Debian_linux — versions 7.0, 8.0, 9.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- secalert@redhat.com (Third Party Advisory, x_refsource_MISC)
- secalert@redhat.com (Third Party Advisory, x_refsource_MISC)
- secalert@redhat.com (Third Party Advisory, x_refsource_MISC)
- secalert@redhat.com (x_refsource_MISC, Vendor Advisory)
- secalert@redhat.com (Third Party Advisory, x_refsource_MISC)
- secalert@redhat.com (Third Party Advisory, x_refsource_MISC)
Frequently asked questions
- What is CVE-2015-1855?
- CVE-2015-1855 is a medium-severity vulnerability in Puppet Agent, classified under Improper Input Validation. CVSS score: 5.9/10. Published 2019-11-29.
- How severe is CVE-2015-1855?
- Medium severity. CVSS v3 base score is 5.9 out of 10.
- Is CVE-2015-1855 known to be exploited?
- 3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.