Vulnerability Monitor

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CVE-2008-4126

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.

Security Impact Summary

CVE-2008-4126 is a security vulnerability that . Impacting 2 products from debian, from debian organizations running these solutions should prioritize assessment and patching.

Historical Context

Originally identified in 2008, this vulnerability predates many modern security frameworks and practices. The vulnerability landscape of that era was characterized by different threat models and less mature defense mechanisms compared to contemporary standards.

Published

2008-09-18T17:59:33.140

Last Modified

2025-04-09T00:30:58.490

Status

Deferred

Source

[email protected]

Severity

CVSSv2: 6.4 (MEDIUM)

CVSSv2 Vector

AV:N/AC:L/Au:N/C:N/I:P/A:P

Access Vector: NETWORK
Access Complexity: LOW
Authentication: NONE
Confidentiality Impact: NONE
Integrity Impact: PARTIAL
Availability Impact: PARTIAL

Exploitability Score

10.0

Impact Score

4.9

Weaknesses

Type: Primary
CWE-16

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	debian	python-dns	≤ 2.3.1-4	Yes
Application	debian	python-dns	2.3.0-1	Yes
Application	debian	python-dns	2.3.0-2	Yes
Application	debian	python-dns	2.3.0-3	Yes
Application	debian	python-dns	2.3.0-4	Yes
Application	debian	python-dns	2.3.0-5	Yes
Application	debian	python-dns	2.3.0-5.1	Yes
Application	debian	python-dns	2.3.0-6	Yes
Application	debian	python-dns	2.3.1-1	Yes
Application	debian	python-dns	2.3.1-2	Yes
Application	debian	python-dns	2.3.1-3	Yes
Application	debian	linux	unknown	No

References

http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=490217 ([email protected])
http://packages.debian.org/changelogs/pool/main/p/python-dns/python-dns_2.3.3-1/changelog ([email protected])
http://www.openwall.com/lists/oss-security/2008/09/11/1 ([email protected])
http://www.openwall.com/lists/oss-security/2008/09/16/4 ([email protected])
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=490217 (af854a3a-2127-422b-91ae-364da2661108)
http://packages.debian.org/changelogs/pool/main/p/python-dns/python-dns_2.3.3-1/changelog (af854a3a-2127-422b-91ae-364da2661108)
http://www.openwall.com/lists/oss-security/2008/09/11/1 (af854a3a-2127-422b-91ae-364da2661108)
http://www.openwall.com/lists/oss-security/2008/09/16/4 (af854a3a-2127-422b-91ae-364da2661108)

How SecUtils Interprets This CVE

SecUtils normalizes and enriches National Vulnerability Database (NVD) records by standardizing vendor and product identifiers, aggregating vulnerability metadata from both NVD and MITRE sources, and providing structured context for security teams. For debian's affected products, we extract Common Platform Enumeration (CPE) data, Common Weakness Enumeration (CWE) classifications, CVSS severity metrics, and reference data to enable rapid vulnerability prioritization and asset correlation. This record contains no exploit code, proof-of-concept instructions, or attack methodologies—only defensive intelligence necessary for patch management, risk assessment, and security operations.