Multiple vulnerability in Ruby RubyGems
| Risk | Medium |
| Patch available | YES |
| Number of vulnerabilities | 4 |
| CVE-ID | CVE-2017-0900 CVE-2017-0899 CVE-2017-0901 CVE-2017-0902 |
| CWE-ID | CWE-20 CWE-284 |
| Exploitation vector | Network |
| Public exploit | Public exploit code for vulnerability #3 is available. |
| Vulnerable software Subscribe |
RubyGems Universal components / Libraries / Libraries used by multiple products |
| Vendor | Ruby |
Security Bulletin
This security bulletin contains information about 4 vulnerabilities.
1) Denial of service
EUVDB-ID: #VU8055
Risk: Low
CVSSv3.1: 3.8 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:U/RL:O/RC:C]
CVE-ID: CVE-2017-0900
CWE-ID:
CWE-20 - Improper input validation
Exploit availability: No
DescriptionThe vulnerability allows a local attacker to cause DoS condition on the target system.
The weakness exists due to insufficient validation of user-supplied input. A local attacker can supply a specially crafted 'query' command and cause the service to crash.
Successful exploitation of the vulnerability results in denial of service.
Update to version 2.6.13.
Vulnerable software versionsRubyGems: 2.2.0 - 2.4.1
External linkshttp://www.ruby-lang.org/en/news/2017/08/29/multiple-vulnerabilities-in-rubygems/
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
2) Security restrictions bypass
EUVDB-ID: #VU8056
Risk: Low
CVSSv3.1: 5.5 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:U/RL:O/RC:C]
CVE-ID: CVE-2017-0899
CWE-ID:
CWE-284 - Improper Access Control
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to bypass security restrictions on the target system.
The weakness exists due to unknown error. A remote attacker can escape ANSI.
Update to version 2.6.13.
Vulnerable software versionsRubyGems: 2.2.0 - 2.4.1
External linkshttp://www.ruby-lang.org/en/news/2017/08/29/multiple-vulnerabilities-in-rubygems/
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
3) Improper input validation
EUVDB-ID: #VU8057
Risk: Medium
CVSSv3.1: 7.8 [CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N/E:P/RL:O/RC:C]
CVE-ID: CVE-2017-0901
CWE-ID:
CWE-20 - Improper input validation
Exploit availability: Yes
DescriptionThe vulnerability allows a remote attacker to overwrite arbitrary files on the target system.
The weakness exists due to insufficient validation of user-supplied input. A remote attacker can trick the victim into installing a specially crafted RubyGem and overwrite arbitrary files.
Update to version 2.6.13.
Vulnerable software versionsRubyGems: 2.2.0 - 2.4.1
External linkshttp://www.ruby-lang.org/en/news/2017/08/29/multiple-vulnerabilities-in-rubygems/
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability. However, proof of concept for this vulnerability is available.
4) Session hijacking
EUVDB-ID: #VU8058
Risk: Low
CVSSv3.1: 3.8 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C]
CVE-ID: CVE-2017-0902
CWE-ID:
CWE-284 - Improper Access Control
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to hijack the target user's session.
The weakness exists due to improper access control. A remote attacker can hijack DNS sessions.
Update to version 2.6.13.
Vulnerable software versionsRubyGems: 2.2.0 - 2.4.1
External linkshttp://www.ruby-lang.org/en/news/2017/08/29/multiple-vulnerabilities-in-rubygems/
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
