CVE-2008-1637: powerdns recursor Numeric Errors
Vulnerability summary
CVE-2008-1637 is a medium (CVSS 6.8) Numeric Errors vulnerability in powerdns recursor. EPSS estimates a 3.96% chance of exploitation in the next 30 days, higher than 90.3% of scored vulnerabilities. 4 public exploits are recorded.
Advisory lineage
Upstream 0 · Downstream 1Timeline
- 02-04-2008PublishedVulnerability first disclosed.
- 07-08-2024Last modifiedVulnerability information updated.
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.
CVSS metrics
1 score · 1 source · 1 versionEPSS trend
Probability
3.96%
Chance of exploitation in the next 30 days
Percentile
90%
Versus all other CVEs
30-day change
0.00 pp
From 3.96% on 21-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
4 foundExploit Reference (trusteer.com)
Maturity: unknown
Exploit Reference (secunia.com)
Maturity: unknown
Exploit Reference (trusteer.com)
Maturity: unknown
Weaknesses
CWE · root causeAffected systems
Debian1 product
- pdns-recursor< 3.1.7-1 | < 3.1.4-1+etch1
Powerdns1 product
- recursor≤ 3.1.4
2 vendors · 2 products
References
19 links
- www.redhat.com/archives/fedora-package-announce/2008-April/msg00198.htmlVendor AdvisoryX Refsource FEDORA
- doc.powerdns.com/changelog.htmlX Refsource CONFIRM
Show all 19 references
- www.redhat.com/archives/fedora-package-announce/2008-April/msg00224.htmlVendor AdvisoryX Refsource FEDORA