Vulnerability Name:

CVE-1999-1150 (CCN-1882)

Assigned:1998-06-30
Published:1998-06-30
Updated:2017-12-19
Summary:Livingston Portmaster routers running ComOS use the same initial sequence number (ISN) for TCP connections, which allows remote attackers to conduct spoofing and hijack TCP sessions.
CVSS v3 Severity:7.3 High (CCN CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): Low
Integrity (I): Low
Availibility (A): Low
CVSS v2 Severity:7.5 High (CVSS v2 Vector: AV:N/AC:L/Au:N/C:P/I:P/A:P)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Authentication (Au): None
Impact Metrics:Confidentiality (C): Partial
Integrity (I): Partial
Availibility (A): Partial
7.5 High (CCN CVSS v2 Vector: AV:N/AC:L/Au:N/C:P/I:P/A:P)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Athentication (Au): None
Impact Metrics:Confidentiality (C): Partial
Integrity (I): Partial
Availibility (A): Partial
Vulnerability Type:CWE-Other
Vulnerability Consequences:Gain Access
References:Source: CCN
Type: BugTraq Mailing List, Tue, 30 Jun 1998 10:46:21 -0500
Livingston Portmaster - ISN generation is loosy!

Source: MITRE
Type: CNA
CVE-1999-1150

Source: CCN
Type: OSVDB ID: 10058
Livingston Portmaster ComOS Predictable TCP ISN Generation Weakness

Source: BUGTRAQ
Type: Vendor Advisory
19980630 Livingston Portmaster - ISN generation is loosy!

Source: XF
Type: UNKNOWN
portmaster-fixed-isn(1882)

Source: XF
Type: UNKNOWN
portmaster-fixed-isn(1882)

Vulnerable Configuration:Configuration 1:
  • cpe:/h:livingston_portmaster:portmaster:initial:*:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    BACK
    livingston_portmaster portmaster initial