Vulnerability Name:

CVE-2017-11465 (CCN-129129)

Assigned:2017-07-13
Published:2017-07-13
Updated:2017-07-25
Summary:The parser_yyerror function in the UTF-8 parser in Ruby 2.4.1 allows attackers to cause a denial of service (invalid write or read) or possibly have unspecified other impact via a crafted Ruby script, related to the parser_tokadd_utf8 function in parse.y.
Note: this might have security relevance as a bypass of a $SAFE protection mechanism.
CVSS v3 Severity:9.8 Critical (CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)
8.5 High (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): High
Integrity (I): High
Availibility (A): High
5.3 Medium (CCN CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L)
4.6 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Low
CVSS v2 Severity:7.5 High (CVSS v2 Vector: AV:N/AC:L/Au:N/C:P/I:P/A:P)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Authentication (Au): None
Impact Metrics:Confidentiality (C): Partial
Integrity (I): Partial
Availibility (A): Partial
5.0 Medium (CCN CVSS v2 Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Athentication (Au): None
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Partial
Vulnerability Type:CWE-787
CWE-125
Vulnerability Consequences:Denial of Service
References:Source: MITRE
Type: CNA
CVE-2017-11465

Source: CCN
Type: Ruby Bug #13742
SIGSEGV in parser_yyerror()

Source: MISC
Type: Issue Tracking, Patch, Vendor Advisory
https://bugs.ruby-lang.org/issues/13742

Source: MISC
Type: Issue Tracking, Patch, Vendor Advisory
https://bugs.ruby-lang.org/projects/ruby-trunk/repository/revisions/59344

Source: XF
Type: UNKNOWN
ruby-cve201711465-dos(129129)

Source: CCN
Type: Ruby Web site
Ruby

Vulnerable Configuration:Configuration 1:
  • cpe:/a:ruby-lang:ruby:2.4.1:*:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    Oval Definitions
    Definition IDClassTitleLast Modified
    oval:com.ubuntu.trusty:def:201711465000
    V
    		CVE-2017-11465 on Ubuntu 14.04 LTS (trusty) - medium.
    2017-07-19
    oval:com.ubuntu.xenial:def:201711465000
    V
    		CVE-2017-11465 on Ubuntu 16.04 LTS (xenial) - medium.
    2017-07-19
    oval:com.ubuntu.xenial:def:2017114650000000
    V
    		CVE-2017-11465 on Ubuntu 16.04 LTS (xenial) - medium.
    2017-07-19
    BACK
    ruby-lang ruby 2.4.1