#VU21408 Resource exhaustion in BIRD Internet Routing Daemon - CVE-2018-12066

Vulnerability identifier: #VU21408

Vulnerability risk: Low

CVSSv4.0: 5.5 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H/E:U/U:Clear]

CVE-ID: CVE-2018-12066

CWE-ID: CWE-400

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
BIRD Internet Routing Daemon
Server applications / Other server solutions

Vendor: CZ.NIC Labs

Description

The vulnerability allows a local user to perform a denial of service (DoS) attack.

The vulnerability exists due to an input validation error when processing BGP mask expressions in birdc. A local user can trigger resource exhaustion and perform a denial of service (DoS) attack.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

BIRD Internet Routing Daemon: 1.6.0 - 1.6.3

---

External links
https://bird.network.cz
https://gitlab.labs.nic.cz/labs/bird/blob/v1.6.4/NEWS#L11
https://gitlab.labs.nic.cz/labs/bird/commit/e8bc64e308586b6502090da2775af84cd760ed0d

---

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.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.