Vulnerability identifier: #VU87205
Vulnerability risk: Medium
CVSSv3.1: 5.2 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]
CVE-ID:
CWE-ID:
CWE-835
Exploitation vector: Network
Exploit availability: No
Vulnerable software:
Unbound
Server applications /
DNS servers
Vendor: NLnet Labs
Description
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to infinite loop in EDE support when trimming EDE text on
positive replies. A remote attacker can consume all available system resources and cause denial of service conditions.
Successful exploitation of the vulnerability requires enabled support for EDE (not a default option).
Mitigation
Install updates from vendor's website.
Vulnerable software versions
Unbound: 1.18.0 - 1.19.1
External links
http://github.com/NLnetLabs/unbound/releases/tag/release-1.19.2
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.