CVE-2008-1637
First published: Wed Apr 02 2008(Updated: )
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.
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| PowerDNS | <=3.1.4 |
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Reference Links
- http://www.trusteer.com/docs/PowerDNS_recursor_DNS_Cache_Poisoning.pdf
- http://www.trusteer.com/docs/powerdnsrecursor.html
- http://doc.powerdns.com/powerdns-advisory-2008-01.html
- http://secunia.com/advisories/29584
- http://doc.powerdns.com/changelog.html
- http://www.securityfocus.com/bid/28517
- http://www.debian.org/security/2008/dsa-1544
- https://www.redhat.com/archives/fedora-package-announce/2008-April/msg00198.html
- https://www.redhat.com/archives/fedora-package-announce/2008-April/msg00224.html
- http://secunia.com/advisories/29737
- http://secunia.com/advisories/29764
- http://security.gentoo.org/glsa/glsa-200804-22.xml
- http://secunia.com/advisories/29830
- http://lists.opensuse.org/opensuse-security-announce/2008-06/msg00001.html
- http://secunia.com/advisories/30581
- http://www.vupen.com/english/advisories/2008/1046/references
- https://exchange.xforce.ibmcloud.com/vulnerabilities/41534
- http://www.securityfocus.com/archive/1/490330/100/0/threaded
Frequently Asked Questions
What is the severity of CVE-2008-1637?
CVE-2008-1637 has a medium severity rating due to potential DNS cache poisoning vulnerabilities.
How do I fix CVE-2008-1637?
To mitigate CVE-2008-1637, upgrade PowerDNS Recursor to version 3.1.5 or later.
What is the impact of exploiting CVE-2008-1637?
Exploiting CVE-2008-1637 allows attackers to poison the DNS cache, leading to the redirection of users to malicious sites.
Which versions of PowerDNS are affected by CVE-2008-1637?
CVE-2008-1637 affects PowerDNS Recursor versions prior to 3.1.5.
What causes the vulnerability in CVE-2008-1637?
CVE-2008-1637 is caused by insufficient randomness in TRXID values and UDP source port numbers utilized by PowerDNS.
- agent/references
- agent/type
- agent/softwarecombine
- collector/mitre-cve
- source/MITRE
- agent/author
- agent/severity
- agent/weakness
- agent/remedy
- agent/last-modified-date
- agent/description
- agent/first-publish-date
- agent/event
- agent/source
- agent/tags
- collector/nvd-index
- agent/software-canonical-lookup-request
- collector/nvd-historical
- vendor/powerdns
- canonical/powerdns
- version/powerdns/3.1.4