CVE-2015-1855

Advisory lineage Upstream: 0 Downstream: 13
Modified
Published: 29 Nov 2019, 20:46
Last modified:06 Aug 2024, 04:54

Vulnerability Summary

Overall Risk (default)
low
24/100
CVSS Score
5.9 MEDIUM
v3.1 (nvd)
EPSS Score
2.72% LOW
3% probability 0.00%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

29 Nov 2019, 20:46
Published
Vulnerability first disclosed
06 Aug 2024, 04:54
Last Modified
Vulnerability information updated

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.

CVSS Metrics

  • v3.1•MEDIUM•Score: 5.9CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
  • v2.0•MEDIUM•Score: 4.3AV:N/AC:M/Au:N/C:N/I:P/A:N

EPSS Trends

Current EPSS score: 2.72%• Percentile: 86%

Techniques & Countermeasures

  • CWE-20•Improper Input Validation

    The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.

Affected Systems

  • debian•debian_linux

    7.0 | 8.0 | 9.0

  • puppet•puppet_agent

    1.0.0

  • puppet•puppet_enterprise

    ≥ 3.0.0, < 3.8.0

  • ruby-lang•ruby

    ≥ 2.1.0, < 2.1.6 | ≥ 2.2.0, < 2.2.2 | 2.0.0 | 2.0.0:p0 | 2.0.0:p195 | 2.0.0:p247 | 2.0.0:p353 | 2.0.0:p451 | 2.0.0:p481 | 2.0.0:p576 | 2.0.0:p594 | 2.0.0:p598 | 2.0.0:p643

  • ruby-lang•trunk

    < 50292

  • ruby•ruby

    < 2.0.0 patchlevel 645 | 2.1.x before 2.1.6 | and 2.2.x before 2.2.2

References (6)