Vulnerability Name:

CVE-2011-4121 (CCN-174999)

Assigned:2011-11-07
Published:2011-11-07
Updated:2020-04-30
Summary:The OpenSSL extension of Ruby (Git trunk) versions after 2011-09-01 up to 2011-11-03 always generated an exponent value of '1' to be used for private RSA key generation. A remote attacker could use this flaw to bypass or corrupt integrity of services, depending on strong private RSA keys generation 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
9.1 Critical (CCN CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H)
7.9 High (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/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): None
Integrity (I): High
Availibility (A): High
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
9.4 High (CCN CVSS v2 Vector: AV:N/AC:L/Au:N/C:N/I:C/A:C)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Athentication (Au): None
Impact Metrics:Confidentiality (C): None
Integrity (I): Complete
Availibility (A): Complete
Vulnerability Type:CWE-326
Vulnerability Consequences:Bypass Security
References:Source: MITRE
Type: CNA
CVE-2011-4121

Source: MISC
Type: Mailing List, Third Party Advisory
http://www.openwall.com/lists/oss-security/2013/07/01/1

Source: MISC
Type: Third Party Advisory
https://access.redhat.com/security/cve/cve-2011-4121

Source: CCN
Type: Red Hat Bugzilla – Bug 751800
(CVE-2011-4121) - CVE-2011-4121 ruby (openssl extension): Insecure way of creation exponent value by private RSA key generation

Source: MISC
Type: Issue Tracking, Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2011-4121

Source: XF
Type: UNKNOWN
ruby-cve20114121-sec-bypass(174999)

Source: MISC
Type: Third Party Advisory
https://security-tracker.debian.org/tracker/CVE-2011-4121

Source: CCN
Type: Ruby Web site
Revision 33633

Source: CCN
Type: WhiteSource Vulnerability Database
CVE-2011-4121

Vulnerable Configuration:Configuration 1:
  • cpe:/a:ruby-lang:ruby:*:*:*:*:*:*:*:* (Version >= 1.8.7.334 and < 1.9.3)

    • * Denotes that component is vulnerable
    BACK
    ruby-lang ruby *