#VU38443 Cross-site request forgery in dnsdist - CVE-2017-7557

Vulnerability identifier: #VU38443

Vulnerability risk: High

CVSSv4.0: 6.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2017-7557

CWE-ID: CWE-352

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
dnsdist
Server applications / Other server solutions

Vendor: PowerDNS.COM B.V.

Description

The vulnerability allows a remote attacker to perform cross-site request forgery attacks.

The vulnerability exists due to insufficient validation of the HTTP request origin. A remote attacker can trick the victim to visit a specially crafted web page and perform arbitrary actions on behalf of the victim on the vulnerable website.

Mitigation
Install update from vendor's website.

Vulnerable software versions

dnsdist: 1.1.0

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External links
https://www.securityfocus.com/bid/100508
https://dnsdist.org/security-advisories/powerdns-advisory-for-dnsdist-2017-02.html

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Q & 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.