Ubuntu update for Bind
| Risk | Medium |
| Patch available | YES |
| Number of vulnerabilities | 1 |
| CVE-ID | CVE-2019-6477 |
| CWE-ID | CWE-399 |
| Exploitation vector | Network |
| Public exploit | N/A |
| Vulnerable software Subscribe |
bind9 (Ubuntu package) Operating systems & Components / Operating system package or component |
| Vendor | Canonical Ltd. |
Security Bulletin
This security bulletin contains one medium risk vulnerability.
1) Resource management error
EUVDB-ID: #VU22894
Risk: Medium
CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2019-6477
CWE-ID:
CWE-399 - Resource Management Errors
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to incorrect implementation of TCP-pipelining feature in ISC BIND, aimed to limit the number of concurrent connections and protect the server from denial of service attacks. A remote attacker can initiate a TCP-pipelined connection with multiple queries that consume more resources than the server has been provisioned to handle and crash the server, when closing the connection.
Update the affected packages.
- Ubuntu 19.10
- bind9 - 1:9.11.5.P4+dfsg-5.1ubuntu2.1
- Ubuntu 19.04
- bind9 - 1:9.11.5.P1+dfsg-1ubuntu2.6
- Ubuntu 18.04 LTS
- bind9 - 1:9.11.3+dfsg-1ubuntu1.11
bind9 (Ubuntu package): 1:9.11.3+dfsg-1ubuntu1.1 - 1:9.11.5.P1+dfsg-1ubuntu2.5
External linksQ & 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.
