Instituto Nacional de ciberseguridad. Sección Incibe
Instituto Nacional de Ciberseguridad. Sección INCIBE-CERT

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CVE-2008-1148

Severity CVSS v4.0:
Pending analysis
Type:
Unavailable / Other
Publication date:
04/03/2008
Last modified:
23/04/2026

Description

A certain pseudo-random number generator (PRNG) algorithm that uses ADD with 0 random hops (aka "Algorithm A0"), as used in OpenBSD 3.5 through 4.2 and NetBSD 1.6.2 through 4.0, allows remote attackers to guess sensitive values such as (1) DNS transaction IDs or (2) IP fragmentation IDs by observing a sequence of previously generated values. NOTE: this issue can be leveraged for attacks such as DNS cache poisoning, injection into TCP packets, and OS fingerprinting.

Impact

Vector 2.0
AV:N/AC:M/Au:N/C:P/I:P/A:P CVSS v2.0 Severity and Metrics:

Base Score: 6.80 MEDIUM
Vector: AV:N/AC:M/Au:N/C:P/I:P/A:P

Attack Vector (AV): Network
Attack Complexity (AC): Medium
Authentication (Au): None
Confidentiality (C): Physical
Integrity (I): Physical
Availability (A): Physical

Base Score 2.0
6.80
Severity 2.0
MEDIUM

Vulnerable products and versions

CPE From Up to
cpe:2.3:o:apple:mac_os_x:10.0:*:*:*:*:*:*:*
cpe:2.3:o:apple:mac_os_x:10.0.1:*:*:*:*:*:*:*
cpe:2.3:o:apple:mac_os_x:10.0.2:*:*:*:*:*:*:*
cpe:2.3:o:apple:mac_os_x:10.0.3:*:*:*:*:*:*:*
cpe:2.3:o:apple:mac_os_x:10.0.4:*:*:*:*:*:*:*
cpe:2.3:o:apple:mac_os_x:10.1:*:*:*:*:*:*:*
cpe:2.3:o:apple:mac_os_x:10.1.1:*:*:*:*:*:*:*
cpe:2.3:o:apple:mac_os_x:10.1.2:*:*:*:*:*:*:*
cpe:2.3:o:apple:mac_os_x:10.1.3:*:*:*:*:*:*:*
cpe:2.3:o:apple:mac_os_x:10.1.4:*:*:*:*:*:*:*
cpe:2.3:o:apple:mac_os_x:10.1.5:*:*:*:*:*:*:*
cpe:2.3:o:apple:mac_os_x:10.2:*:*:*:*:*:*:*
cpe:2.3:o:apple:mac_os_x:10.2.1:*:*:*:*:*:*:*
cpe:2.3:o:apple:mac_os_x:10.2.2:*:*:*:*:*:*:*
cpe:2.3:o:apple:mac_os_x:10.2.3:*:*:*:*:*:*:*

To consult the complete list of CPE names with products and versions, see this page


References to Advisories, Solutions, and Tools