CVE-2015-5470

Description

The label decompression functionality in PowerDNS Recursor before 3.6.4 and 3.7.x before 3.7.3 and Authoritative (Auth) Server before 3.3.3 and 3.4.x before 3.4.5 allows remote attackers to cause a denial of service (CPU consumption or crash) via a request with a long name that refers to itself. NOTE: this vulnerability exists because of an incomplete fix for CVE-2015-1868.

Category

7.8
CVSS
Severity: High
CVSS 2.0 •
EPSS 2.06% Top 20%
Vendor Advisory powerdns.com
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://doc.powerdns.com/md/security/powerdns-advisory-2015-01/ patch vendor advisory
http://www.openwall.com/lists/oss-security/2015/07/10/8 mailing list
http://www.openwall.com/lists/oss-security/2015/07/07/6 mailing list

Frequently Asked Questions

What is the severity of CVE-2015-5470?
CVE-2015-5470 has been scored as a high severity vulnerability.
How to fix CVE-2015-5470?
To fix CVE-2015-5470, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2015-5470 being actively exploited in the wild?
It is possible that CVE-2015-5470 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~2% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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