Denial of service in RubyGems Optimized XML
| Risk | Low |
| Patch available | YES |
| Number of vulnerabilities | 1 |
| CVE-ID | CVE-2017-16229 |
| CWE-ID | CWE-126 |
| Exploitation vector | Local |
| Public exploit | Public exploit code for vulnerability #1 is available. |
| Vulnerable software Subscribe |
Optimized XML Server applications / File servers (FTP/HTTP) |
| Vendor | Ruby |
Security Bulletin
This security bulletin contains one low risk vulnerability.
1) Stack-based buffer over-read
EUVDB-ID: #VU11162
Risk: Low
CVSSv3.1: 5 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:P/RL:O/RC:C]
CVE-ID: CVE-2017-16229
CWE-ID:
CWE-126 - Buffer over-read
Exploit availability: No
DescriptionThe vulnerability allows a local attacker to cause DoS condition on the target system.
The weakness exists in the read_from_str function due to stack-based buffer overread. A local attacker can send specially crafted input to be parsed by the sax_parse function, trigger memory corruption and cause the service to crash.
Update to version 2.8.2.
Vulnerable software versionsOptimized XML: 2.8.1
External linkshttp://github.com/ohler55/ox/issues/195
Q & A
Can this vulnerability be exploited remotely?
No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.
How the attacker can exploit this vulnerability?
The attacker would have to send a specially crafted request to the affected application in order to exploit this vulnerability.
The attacker would have to login to the system and perform certain actions in order to exploit this vulnerability.
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.
