Description (CNA)
The attack vector is a potential Denial of Service (DoS). The vulnerability is caused by an insufficient check on the length of a decompressed domain name within a DNS packet. An attacker can craft a malicious DNS packet containing a highly compressed domain name. When the resolv library parses such a packet, the name decompression process consumes a large amount of CPU resources, as the library does not limit the resulting length of the name. This resource consumption can cause the application thread to become unresponsive, resulting in a Denial of Service condition.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Ruby / resolv | affected 0.2 through 0.2.2; affected 0.3.0 through 0.3.0; affected 0.6 through 0.6.1 |
CWE
No CWE identifiers supplied.
References
ADP enrichment
No English description supplied.