Vulnerability Name:

CVE-2011-2942 (CCN-70883)

Assigned:2011-10-20
Published:2011-10-20
Updated:2023-02-13
Summary:A certain Red Hat patch to the __br_deliver function in net/bridge/br_forward.c in the Linux kernel 2.6.18 on Red Hat Enterprise Linux (RHEL) 5 allows remote attackers to cause a denial of service (NULL pointer dereference and system crash) or possibly have unspecified other impact by leveraging connectivity to a network interface that uses an Ethernet bridge device.
CVSS v3 Severity:7.5 High (CCN CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
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): None
Integrity (I): None
Availibility (A): High
CVSS v2 Severity:6.8 Medium (CVSS v2 Vector: AV:N/AC:M/Au:N/C:P/I:P/A:P)
5.0 Medium (Temporal CVSS v2 Vector: AV:N/AC:M/Au:N/C:P/I:P/A:P/E:U/RL:OF/RC:C)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Medium
Authentication (Au): None
Impact Metrics:Confidentiality (C): Partial
Integrity (I): Partial
Availibility (A): Partial
7.8 High (CCN CVSS v2 Vector: AV:N/AC:L/Au:N/C:N/I:N/A:C)
5.8 Medium (CCN Temporal CVSS v2 Vector: AV:N/AC:L/Au:N/C:N/I:N/A:C/E:U/RL:OF/RC:C)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Athentication (Au): None
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Complete
6.1 Medium (REDHAT CVSS v2 Vector: AV:A/AC:L/Au:N/C:N/I:N/A:C)
4.5 Medium (REDHAT Temporal CVSS v2 Vector: AV:A/AC:L/Au:N/C:N/I:N/A:C/E:U/RL:OF/RC:C)
Exploitability Metrics:Access Vector (AV): Adjacent_Network
Access Complexity (AC): Low
Authentication (Au): None
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Complete
Vulnerability Type:CWE-476
Vulnerability Consequences:Denial of Service
References:Source: MITRE
Type: CNA
CVE-2011-2942

Source: CCN
Type: RHSA-2011-1386
Important: kernel security, bug fix, and enhancement update

Source: CCN
Type: RHSA-2011-1408
Moderate: rhev-hypervisor security update

Source: CCN
Type: The Linux Kernel Archives Web site
The Linux Kernel Archives

Source: secalert@redhat.com
Type: UNKNOWN
secalert@redhat.com

Source: CCN
Type: OSVDB ID: 77684
Linux Kernel OMAP4 Bridge Networking Interface Network Packet Parsing Remote DoS

Source: CCN
Type: BID-50313
Red Hat Linux Kernel Ethernet Bridge Interface Denial of Service Vulnerability

Source: CCN
Type: Red Hat Bugzilla Bug 730917
CVE-2011-2942 kernel: bridge: null pointer dereference in __br_deliver

Source: secalert@redhat.com
Type: UNKNOWN
secalert@redhat.com

Source: XF
Type: UNKNOWN
kernel-bridge-dos(70883)

Source: CCN
Type: RHSA-2011:1386-1
Important: kernel security, bug fix, and enhancement update

Vulnerable Configuration:Configuration RedHat 1:
  • cpe:/o:redhat:enterprise_linux:5:*:*:*:*:*:*:*
    • Configuration RedHat 2:
  • cpe:/o:redhat:enterprise_linux:5::client:*:*:*:*:*
    • Configuration RedHat 3:
  • cpe:/o:redhat:enterprise_linux:5::server:*:*:*:*:*

    • Configuration CCN 1:
  • cpe:/o:redhat:enterprise_linux:5:*:*:*:*:*:*:*
  • OR cpe:/o:redhat:enterprise_linux_desktop:5::client:*:*:*:*:*
  • AND
  • cpe:/o:redhat:enterprise_linux:5:*:client:*:*:*:*:*
  • OR cpe:/a:redhat:enterprise_virtualization:2.2:*:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    Oval Definitions
    Definition IDClassTitleLast Modified
    oval:org.mitre.oval:def:15019
    P
    		USN-1256-1 -- Linux kernel (Natty backport) vulnerabilities
    2014-06-30
    oval:org.mitre.oval:def:15273
    P
    		USN-1294-1 -- Linux kernel (Oneiric backport) vulnerabilities
    2014-06-30
    oval:org.mitre.oval:def:23388
    P
    		ELSA-2011:1386: kernel security, bug fix, and enhancement update (Important)
    2014-05-26
    oval:org.mitre.oval:def:21885
    P
    		RHSA-2011:1386: kernel security, bug fix, and enhancement update (Important)
    2014-02-24
    oval:com.ubuntu.precise:def:20112942000
    V
    		CVE-2011-2942 on Ubuntu 12.04 LTS (precise) - medium.
    2013-06-08
    oval:com.redhat.rhsa:def:20111386
    P
    		RHSA-2011:1386: kernel security, bug fix, and enhancement update (Important)
    2011-10-20
    BACK
    redhat enterprise linux 5
    redhat enterprise linux desktop 5
    redhat enterprise linux 5
    redhat enterprise virtualization 2.2