CVE catalog
CVE-2008-1637
pdns-recursor: CVE-2008-1637
- Severity
- Medium
- Published
- Source
- [NVD] · [CVE record]
- EPSS
- 3.96% · Oct 25, 2026
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.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | pdns-recursor | sid | 5.4.9-1 | fixed |
| Debian | pdns-recursor | forky | 5.4.8-1 | fixed |
| Debian | pdns-recursor | trixie | 5.2.13-0+deb13u1 | fixed |
| Debian | pdns-recursor | trixie-security | 5.2.13-0+deb13u1 | fixed |
| Debian | pdns-recursor | bookworm | 4.8.8-1+deb12u1 | fixed |
| Debian | pdns-recursor | bookworm-security | 4.8.8-1+deb12u1 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | pdns-recursor | source | sid | 3.1.7-1 | not yet assigned | Not reported | Not reported |
| Debian | pdns-recursor | source | forky | 3.1.7-1 | not yet assigned | Not reported | Not reported |
| Debian | pdns-recursor | source | trixie | 3.1.7-1 | not yet assigned | Not reported | Not reported |
| Debian | pdns-recursor | source | bookworm | 3.1.7-1 | not yet assigned | Not reported | Not reported |
OpenFactory catalog packages
Matching against OpenFactory catalog package versions is in progress.
[Debian 12 (Bookworm)]
- [pdns-recursor]Unknown
Details (4)
4.8.8-1+deb12u1· amd64 · bookwormFixed · Fixed:
3.1.7-1dsa · pdns-recursor · debian · bookworm; dsa · pdns-recursor · debian · 12
4.8.8-1+deb12u1· arm64 · bookwormFixed · Fixed:
3.1.7-1dsa · pdns-recursor · debian · bookworm; dsa · pdns-recursor · debian · 12
4.8.8-1+deb12u1· amd64 · bookworm-securityFixed · Fixed:
3.1.7-1dsa · pdns-recursor · debian · bookworm; dsa · pdns-recursor · debian · 12
4.8.8-1+deb12u1· arm64 · bookworm-securityFixed · Fixed:
3.1.7-1dsa · pdns-recursor · debian · bookworm; dsa · pdns-recursor · debian · 12
[Debian 13 (Trixie)]
- [pdns-recursor]Unknown
Details (4)
5.2.11-0+deb13u1· amd64 · trixieFixed · Fixed:
3.1.7-1dsa · pdns-recursor · debian · 13
5.2.11-0+deb13u1· arm64 · trixieFixed · Fixed:
3.1.7-1dsa · pdns-recursor · debian · 13
5.2.13-0+deb13u1· amd64 · trixie-securityFixed · Fixed:
3.1.7-1dsa · pdns-recursor · debian · 13
5.2.13-0+deb13u1· arm64 · trixie-securityFixed · Fixed:
3.1.7-1dsa · pdns-recursor · debian · 13
Observed: