CVE-2008-4126

Severity: medium (CVSS 6.4 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 2.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2008-09-18 · updated 2026-06-16
Weakness: CWE-16

Description

PyDNS (aka python-dns) before 2.3.1-5 in Debian GNU/Linux does not use random source ports for DNS requests and does not use random transaction IDs for DNS retries, which makes it easier for remote attackers to spoof DNS responses, a different vulnerability than CVE-2008-1447. NOTE: this vulnerability exists because of an incomplete fix for CVE-2008-4099.

Affected products

Debian Python-Dns: through 2.3.1-4; 2.3.0-1, 2.3.0-2, 2.3.0-3, 2.3.0-4, 2.3.0-5, 2.3.0-5.1 (+4)

References

http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=490217
http://packages.debian.org/changelogs/pool/main/p/python-dns/python-dns_2.3.3-1/changelog
http://www.openwall.com/lists/oss-security/2008/09/11/1
http://www.openwall.com/lists/oss-security/2008/09/16/4
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=490217
http://packages.debian.org/changelogs/pool/main/p/python-dns/python-dns_2.3.3-1/changelog
http://www.openwall.com/lists/oss-security/2008/09/11/1
http://www.openwall.com/lists/oss-security/2008/09/16/4

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