Risk | High |
Patch available | YES |
Number of vulnerabilities | 1 |
CVE-ID | CVE-2011-4121 |
CWE-ID | CWE-326 |
Exploitation vector | Network |
Public exploit | N/A |
Vulnerable software Subscribe |
Ruby Universal components / Libraries / Scripting languages |
Vendor | Ruby |
Security Bulletin
This security bulletin contains one high risk vulnerability.
EUVDB-ID: #VU30579
Risk: High
CVSSv3.1: 8.5 [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]
CVE-ID: CVE-2011-4121
CWE-ID:
CWE-326 - Inadequate Encryption Strength
Exploit availability: No
DescriptionThe vulnerability allows a remote non-authenticated attacker to execute arbitrary code.
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.
MitigationInstall update from vendor's website.
Vulnerable software versionsRuby: 1.9.0 - 1.9.2-p180
External linkshttp://www.openwall.com/lists/oss-security/2013/07/01/1
http://access.redhat.com/security/cve/cve-2011-4121
http://bugzilla.redhat.com/show_bug.cgi?id=CVE-2011-4121
http://security-tracker.debian.org/tracker/CVE-2011-4121
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.