An extension to hooks capabilities which debuted in Kea 1.4.0 introduced a memory leak for operators who are using certain hooks library fa…
An extension to hooks capabilities which debuted in Kea 1.4.0 introduced a memory leak for operators who are using certain hooks library facilities. In order to support multiple requests simultaneously, Kea 1.4 added a callout handle store but unfortunately the initial implementation of this store does not properly free memory in every case. Hooks which make use of query4 or query6 parameters in their callouts can leak memory, resulting in the eventual exhaustion of available memory and subsequent failure of the server process. Affects Kea DHCP 1.4.0.
The product does not release a resource after its effective lifetime has ended, i.e., after the resource is no longer needed.
https://cwe.mitre.org/data/definitions/772.html →Open in CWE collection →An attacker performs flooding at the HTTP level to bring down only a particular web application rather than anything listening on a TCP/IP connection. This denial of service attack requires substantially fewer packets to be sent which makes DoS harder to detect. This is an equivalent of SYN flood in HTTP. The idea is to keep the HTTP session alive indefinitely and then repeat that hundreds of times. This attack targets resource depletion weaknesses in web server software. The web server will wait to attacker's responses on the initiated HTTP sessions while the connection threads are being exhausted.
https://capec.mitre.org/data/definitions/469.html →Open in CAPEC collection →| Product | Vendor | Status |
|---|---|---|
| isc-kea | Tracked | |
| isc-kea | Tracked | |
| isc-kea | Tracked | |
| isc-kea | Tracked | |
| isc-kea | Tracked | |
| isc-kea | Tracked | |
| isc-kea | Tracked | |
| isc-kea | Tracked | |
| isc-kea | Tracked | |
| isc-kea | Tracked | |
| isc-kea | Tracked | |
| isc-kea | Tracked | |
| isc-kea | Tracked | |
| isc-kea | Tracked | |
| kea | * | Tracked |