CVE-2008-1637

Public Exploit

Description

PowerDNS Recursor before 3.1.5 uses insufficient randomness to calculate (1) TRXID values and (2) UDP source port numbers, which makes it easier for remote attackers to poison a DNS cache, related to (a) algorithmic deficiencies in rand and random functions in external libraries, (b) use of a 32-bit seed value, and (c) choice of the time of day as the sole seeding information.

Category

6.8
CVSS
Severity: Medium
CVSS 2.0 •
EPSS 0.03%
Vendor Advisory debian.org Vendor Advisory redhat.com Vendor Advisory opensuse.org Vendor Advisory gentoo.org Vendor Advisory redhat.com Vendor Advisory secunia.com
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
http://secunia.com/advisories/29764 third party advisory
http://secunia.com/advisories/29737 third party advisory
http://www.debian.org/security/2008/dsa-1544 vendor advisory
https://www.redhat.com/archives/fedora-package-announce/2008-April/msg00198.html vendor advisory
http://www.securityfocus.com/bid/28517 vdb entry
http://doc.powerdns.com/changelog.html
http://www.trusteer.com/docs/powerdnsrecursor.html exploit
http://secunia.com/advisories/29584 vendor advisory third party advisory exploit
http://lists.opensuse.org/opensuse-security-announce/2008-06/msg00001.html vendor advisory
http://www.vupen.com/english/advisories/2008/1046/references vdb entry
http://www.trusteer.com/docs/PowerDNS_recursor_DNS_Cache_Poisoning.pdf exploit
http://secunia.com/advisories/29830 third party advisory
http://doc.powerdns.com/powerdns-advisory-2008-01.html patch exploit
https://exchange.xforce.ibmcloud.com/vulnerabilities/41534 vdb entry
http://security.gentoo.org/glsa/glsa-200804-22.xml vendor advisory
https://www.redhat.com/archives/fedora-package-announce/2008-April/msg00224.html vendor advisory
http://www.securityfocus.com/archive/1/490330/100/0/threaded mailing list
http://secunia.com/advisories/30581 third party advisory

Frequently Asked Questions

What is the severity of CVE-2008-1637?
CVE-2008-1637 has been scored as a medium severity vulnerability.
How to fix CVE-2008-1637?
To fix CVE-2008-1637, 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-2008-1637 being actively exploited in the wild?
It is possible that CVE-2008-1637 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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