Vulnerability Name:

CVE-2001-0851 (CCN-7461)

Assigned:2001-11-02
Published:2001-11-02
Updated:2017-10-10
Summary:Linux kernel 2.0, 2.2 and 2.4 with syncookies enabled allows remote attackers to bypass firewall rules by brute force guessing the cookie.
CVSS v3 Severity:5.3 Medium (CCN CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N)
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): None
Availibility (A): None
CVSS v2 Severity:5.0 Medium (CVSS v2 Vector: AV:N/AC:L/Au:N/C:P/I:N/A:N)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Authentication (Au): None
Impact Metrics:Confidentiality (C): Partial
Integrity (I): None
Availibility (A): None
5.0 Medium (CCN CVSS v2 Vector: AV:N/AC:L/Au:N/C:P/I:N/A:N)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Athentication (Au): None
Impact Metrics:Confidentiality (C): Partial
Integrity (I): None
Availibility (A): None
Vulnerability Type:CWE-Other
Vulnerability Consequences:Bypass Security
References:Source: CCN
Type: Caldera International, Inc. Security Advisory CSSA-2001-038.0
Linux - syncookies firewall breaking problem

Source: CCN
Type: EnGarde Secure Linux Security Advisory ESA-20011106-01
Syncookie vulnerability

Source: MITRE
Type: CNA
CVE-2001-0851

Source: CONECTIVA
Type: UNKNOWN
CLA-2001:432

Source: CCN
Type: Conectiva Linux Announcement CLSA-2001:432
kernel

Source: CCN
Type: Hewlett-Packard Company Security Bulletin HPSBTL0112-003
Security vulnerabilities in the kernel

Source: CCN
Type: RHSA-2001-142
kernel 2.2 and 2.4: syncookie vulnerability

Source: CALDERA
Type: Patch, Vendor Advisory
CSSA-2001-38.0

Source: MANDRAKE
Type: UNKNOWN
MDKSA-2001:082

Source: ENGARDE
Type: Patch, Vendor Advisory
ESA-20011106-01

Source: SUSE
Type: UNKNOWN
SuSE-SA:2001:039

Source: CCN
Type: OSVDB ID: 1980
Linux Kernel syncookies Firewall Bypass

Source: REDHAT
Type: UNKNOWN
RHSA-2001:142

Source: CCN
Type: BID-3505
Linux Syn Filter Evasion Vulnerability

Source: CCN
Type: SuSE Security Announcement SuSE-SA:2001:039
kernel (update)

Source: XF
Type: UNKNOWN
linux-syncookie-bypass-filter(7461)

Source: XF
Type: UNKNOWN
linux-syncookie-bypass-filter(7461)

Vulnerable Configuration:Configuration 1:
  • cpe:/a:caldera:openlinux_server:3.1:*:*:*:*:*:*:*
  • OR cpe:/a:caldera:openlinux_workstation:3.1:*:*:*:*:*:*:*

    • Configuration 2:
  • cpe:/o:caldera:openlinux:2.3:*:*:*:*:*:*:*
  • OR cpe:/o:caldera:openlinux_edesktop:2.4:*:*:*:*:*:*:*
  • OR cpe:/o:caldera:openlinux_eserver:2.3.1:*:*:*:*:*:*:*
  • OR cpe:/o:linux:linux_kernel:2.0:*:*:*:*:*:*:*
  • OR cpe:/o:linux:linux_kernel:2.2.0:*:*:*:*:*:*:*
  • OR cpe:/o:linux:linux_kernel:2.4.0:-:*:*:*:*:*:*
  • OR cpe:/o:suse:suse_linux:6.3:*:*:*:*:*:*:*
  • OR cpe:/o:suse:suse_linux:6.4:*:*:*:*:*:*:*
  • OR cpe:/o:suse:suse_linux:7.0:*:*:*:*:*:*:*
  • OR cpe:/o:suse:suse_linux:7.1:*:*:*:*:*:*:*
  • OR cpe:/o:suse:suse_linux:7.2:*:*:*:*:*:*:*
  • OR cpe:/o:suse:suse_linux:7.3:*:*:*:*:*:*:*

    • Configuration CCN 1:
  • cpe:/o:linux:linux_kernel:2.2.0:*:*:*:*:*:*:*
  • OR cpe:/o:linux:linux_kernel:2.0:*:*:*:*:*:*:*
  • OR cpe:/o:linux:linux_kernel:2.4.0:-:*:*:*:*:*:*
  • AND
  • cpe:/o:redhat:linux:6.2:*:*:*:*:*:*:*
  • OR cpe:/o:suse:suse_linux:6.3:*:*:*:*:*:*:*
  • OR cpe:/o:suse:suse_linux:6.4:*:*:*:*:*:*:*
  • OR cpe:/o:mandrakesoft:mandrake_linux:7.1:*:*:*:*:*:*:*
  • OR cpe:/o:redhat:linux:7:*:*:*:*:*:*:*
  • OR cpe:/o:mandrakesoft:mandrake_linux:7.2:*:*:*:*:*:*:*
  • OR cpe:/o:suse:suse_linux:7.0:*:*:*:*:*:*:*
  • OR cpe:/o:conectiva:linux:6.0:*:*:*:*:*:*:*
  • OR cpe:/o:mandrakesoft:mandrake_linux_corporate_server:1.0.1:*:*:*:*:*:*:*
  • OR cpe:/o:suse:suse_linux:7.1:*:*:*:*:*:*:*
  • OR cpe:/o:engardelinux:secure_community:1.0.1:*:*:*:*:*:*:*
  • OR cpe:/o:redhat:linux:7.1:*:*:*:*:*:*:*
  • OR cpe:/o:mandrakesoft:mandrake_linux:8.0:*:*:*:*:*:*:*
  • OR cpe:/o:conectiva:linux:5.0:*:*:*:*:*:*:*
  • OR cpe:/o:conectiva:linux:prg_graficos:*:*:*:*:*:*:*
  • OR cpe:/o:conectiva:linux:ecommerce:*:*:*:*:*:*:*
  • OR cpe:/o:conectiva:linux:5.1:*:*:*:*:*:*:*
  • OR cpe:/a:mandrakesoft:mandrake_single_network_firewall:7.2:*:*:*:*:*:*:*
  • OR cpe:/o:suse:suse_linux:7.2:*:*:*:*:*:*:*
  • OR cpe:/o:conectiva:linux:7.0:*:*:*:*:*:*:*
  • OR cpe:/o:mandrakesoft:mandrake_linux:8.1:*:*:*:*:*:*:*
  • OR cpe:/o:redhat:linux:7.2:*:*:*:*:*:*:*
  • OR cpe:/o:hp:secure_os:1.0:*:*:*:*:*:*:*
  • OR cpe:/o:suse:suse_linux:7.3:*:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    BACK
    caldera openlinux server 3.1
    caldera openlinux workstation 3.1
    caldera openlinux 2.3
    caldera openlinux edesktop 2.4
    caldera openlinux eserver 2.3.1
    linux linux kernel 2.0
    linux linux kernel 2.2.0
    linux linux kernel 2.4.0
    suse suse linux 6.3
    suse suse linux 6.4
    suse suse linux 7.0
    suse suse linux 7.1
    suse suse linux 7.2
    suse suse linux 7.3
    linux linux kernel 2.2.0
    linux linux kernel 2.0
    linux linux kernel 2.4.0
    redhat linux 6.2
    suse suse linux 6.3
    suse suse linux 6.4
    mandrakesoft mandrake linux 7.1
    redhat linux 7
    mandrakesoft mandrake linux 7.2
    suse suse linux 7.0
    conectiva linux 6.0
    mandrakesoft mandrake linux corporate server 1.0.1
    suse suse linux 7.1
    engardelinux secure community 1.0.1
    redhat linux 7.1
    mandrakesoft mandrake linux 8.0
    conectiva linux 5.0
    conectiva linux prg_graficos
    conectiva linux ecommerce
    conectiva linux 5.1
    mandrakesoft mandrake single network firewall 7.2
    suse suse linux 7.2
    conectiva linux 7.0
    mandrakesoft mandrake linux 8.1
    redhat linux 7.2
    hp secure os 1.0
    suse suse linux 7.3