Executive Summary

Informations
Name CVE-2014-4021 First vendor Publication 2014-06-18
Vendor Cve Last vendor Modification 2024-11-21

Security-Database Scoring CVSS v3

Cvss vector : N/A
Overall CVSS Score NA
Base Score NA Environmental Score NA
impact SubScore NA Temporal Score NA
Exploitabality Sub Score NA
 
Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector : (AV:A/AC:L/Au:S/C:P/I:N/A:N)
Cvss Base Score 2.7 Attack Range Adjacent network
Cvss Impact Score 2.9 Attack Complexity Low
Cvss Expoit Score 5.1 Authentication Requires single instance
Calculate full CVSS 2.0 Vectors scores

Detail

Xen 3.2.x through 4.4.x does not properly clean memory pages recovered from guests, which allows local guest OS users to obtain sensitive information via unspecified vectors.

Original Source

Url : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-4021

CWE : Common Weakness Enumeration

% Id Name
100 % CWE-119 Failure to Constrain Operations within the Bounds of a Memory Buffer

OVAL Definitions

Definition Id: oval:org.mitre.oval:def:25266
 
Oval ID: oval:org.mitre.oval:def:25266
Title: RHSA-2014:0926: kernel security and bug fix update (Moderate)
Description: The kernel packages contain the Linux kernel, the core of any Linux operating system. * A NULL pointer dereference flaw was found in the rds_iw_laddr_check() function in the Linux kernel's implementation of Reliable Datagram Sockets (RDS). A local, unprivileged user could use this flaw to crash the system. (CVE-2014-2678, Moderate) * It was found that the Xen hypervisor implementation did not properly clean memory pages previously allocated by the hypervisor. A privileged guest user could potentially use this flaw to read data relating to other guests or the hypervisor itself. (CVE-2014-4021, Moderate) Red Hat would like to thank the Xen project for reporting CVE-2014-4021. Upstream acknowledges Jan Beulich as the original reporter. This update also fixes the following bugs: * A bug in the journaling block device (jbd and jbd2) code could, under certain circumstances, trigger a BUG_ON() assertion and result in a kernel oops. This happened when an application performed an extensive number of commits to the journal of the ext3 file system and there was no currently active transaction while synchronizing the file's in-core state. This problem has been resolved by correcting respective test conditions in the jbd and jbd2 code. (BZ#1097528) * After a statically defined gateway became unreachable and its corresponding neighbor entry entered a FAILED state, the gateway stayed in the FAILED state even after it became reachable again. As a consequence, traffic was not routed through that gateway. This update allows probing such a gateway automatically so that the traffic can be routed through this gateway again once it becomes reachable. (BZ#1106354) * Due to an incorrect condition check in the IPv6 code, the ipv6 driver was unable to correctly assemble incoming packet fragments, which resulted in a high IPv6 packet loss rate. This update fixes the said check for a fragment overlap and ensures that incoming IPv6 packet fragments are now processed as expected. (BZ#1107932) * Recent changes in the d_splice_alias() function introduced a bug that allowed d_splice_alias() to return a dentry from a different directory than the directory being looked up. As a consequence in cluster environment, a kernel panic could be triggered when a directory was being removed while a concurrent cross-directory operation was performed on this directory on another cluster node. This update avoids the kernel panic in this situation by correcting the search logic in the d_splice_alias() function so that the function can no longer return a dentry from an incorrect directory. (BZ#1109720) * The NFSv4 server did not handle multiple OPEN operations to the same file separately, which could cause the NFSv4 client to repeatedly send CLOSE requests with the same state ID, even though the NFS server rejected the request with an NFS4ERR_OLD_STATEID (10024) error code. This update ensures that the NFSv4 client no longer re-sends the same CLOSE request after receiving NFS4ERR_OLD_STATEID. (BZ#1113468) All kernel users are advised to upgrade to these updated packages, which contain backported patches to correct these issues. The system must be rebooted for this update to take effect.
Family: unix Class: patch
Reference(s): RHSA-2014:0926-00
CESA-2014:0926
CVE-2014-2678
CVE-2014-4021
 Version: 3
Platform(s): Red Hat Enterprise Linux 5
CentOS Linux 5
 Product(s): kernel
Definition Synopsis:
Definition Id: oval:org.mitre.oval:def:26366
 
Oval ID: oval:org.mitre.oval:def:26366
Title: DSA-3006-1 xen - security update
Description: Multiple security issues have been discovered in the Xen virtualisation solution which may result in information leaks or denial of service.
Family: unix Class: patch
Reference(s): DSA-3006-1
CVE-2013-1432
CVE-2013-1442
CVE-2013-2076
CVE-2013-2077
CVE-2013-2078
CVE-2013-2194
CVE-2013-2195
CVE-2013-2196
CVE-2013-2211
CVE-2013-4329
CVE-2013-4355
CVE-2013-4361
CVE-2013-4368
CVE-2013-4494
CVE-2013-4553
CVE-2014-1950
CVE-2014-2599
CVE-2014-3124
CVE-2014-4021
 Version: 3
Platform(s): Debian GNU/Linux 7.0
Debian GNU/kFreeBSD 7.0
 Product(s): xen
Definition Synopsis:
Definition Id: oval:org.mitre.oval:def:26595
 
Oval ID: oval:org.mitre.oval:def:26595
Title: ELSA-2014-0926-1 -- kernel security and bug fix update (moderate)
Description: kernel [2.6.18-371.11.1.0.1] - ocfs2: dlm: fix recovery hung (Junxiao Bi) [orabug 13956772] - i386: fix MTRR code (Zhenzhong Duan) [orabug 15862649] - [oprofile] x86, mm: Add __get_user_pages_fast() [orabug 14277030] - [oprofile] export __get_user_pages_fast() function [orabug 14277030] - [oprofile] oprofile, x86: Fix nmi-unsafe callgraph support [orabug 14277030] - [oprofile] oprofile: use KM_NMI slot for kmap_atomic [orabug 14277030] - [oprofile] oprofile: i386 add get_user_pages_fast support [orabug 14277030] - [kernel] Initialize the local uninitialized variable stats. [orabug 14051367] - [fs] JBD:make jbd support 512B blocks correctly for ocfs2. [orabug 13477763] - [x86 ] fix fpu context corrupt when preempt in signal context [orabug 14038272] - [mm] fix hugetlb page leak (Dave McCracken) [orabug 12375075] - fix ia64 build error due to add-support-above-32-vcpus.patch(Zhenzhong Duan) - [x86] use dynamic vcpu_info remap to support more than 32 vcpus (Zhenzhong Duan) - [x86] Fix lvt0 reset when hvm boot up with noapic param - [scsi] remove printk's when doing I/O to a dead device (John Sobecki, Chris Mason) [orabug 12342275] - [char] ipmi: Fix IPMI errors due to timing problems (Joe Jin) [orabug 12561346] - [scsi] Fix race when removing SCSI devices (Joe Jin) [orabug 12404566] - [net] net: Redo the broken redhat netconsole over bonding (Tina Yang) [orabug 12740042] - [fs] nfs: Fix __put_nfs_open_context() NULL pointer panic (Joe Jin) [orabug 12687646] - fix filp_close() race (Joe Jin) [orabug 10335998] - make xenkbd.abs_pointer=1 by default [orabug 67188919] - [xen] check to see if hypervisor supports memory reservation change (Chuck Anderson) [orabug 7556514] - [net] Enable entropy for bnx2,bnx2x,e1000e,igb,ixgb,ixgbe,ixgbevf (John Sobecki) [orabug 10315433] - [NET] Add xen pv netconsole support (Tina Yang) [orabug 6993043] [bz 7258] - [mm] Patch shrink_zone to yield during severe mempressure events, avoiding hangs and evictions (John Sobecki,Chris Mason) [orabug 6086839] - [mm] Enhance shrink_zone patch allow full swap utilization, and also be NUMA-aware (John Sobecki,Chris Mason,Herbert van den Bergh) [orabug 9245919] - fix aacraid not to reset during kexec (Joe Jin) [orabug 8516042] - [xen] PVHVM guest with PoD crashes under memory pressure (Chuck Anderson) [orabug 9107465] - [xen] PV guest with FC HBA hangs during shutdown (Chuck Anderson) [orabug 9764220] - Support 256GB+ memory for pv guest (Mukesh Rathor) [orabug 9450615] - fix overcommit memory to use percpu_counter for (KOSAKI Motohiro, Guru Anbalagane) [orabug 6124033] - [ipmi] make configurable timeouts for kcs of ipmi [orabug 9752208] - [ib] fix memory corruption (Andy Grover) [orabug 9972346] - [usb] USB: fix __must_check warnings in drivers/usb/core/ (Junxiao Bi) [orabug 14795203] - [usb] usbcore: fix endpoint device creation (Junxiao Bi) [orabug 14795203] - [usb] usbcore: fix refcount bug in endpoint removal (Junxiao Bi) [orabug 14795203]
Family: unix Class: patch
Reference(s): ELSA-2014-0926-1
CVE-2014-2678
CVE-2014-4021
 Version: 5
Platform(s): Oracle Linux 5
 Product(s): kernel
ocfs2
oracleasm
kernel-PAE
kernel-PAE-devel
kernel-debug
kernel-debug-devel
kernel-devel
kernel-doc
kernel-headers
kernel-xen
kernel-xen-devel
Definition Synopsis:
Definition Id: oval:org.mitre.oval:def:26940
 
Oval ID: oval:org.mitre.oval:def:26940
Title: ELSA-2014-0926 -- kernel security and bug fix update (moderate)
Description: kernel [2.6.18-371.11.1] - [fs] dcache: fix cleanup on warning in d_splice_alias (Denys Vlasenko) [1109720 1080606] - [net] neigh: Make neigh_add_timer symmetrical to neigh_del_timer (Marcelo Ricardo Leitner) [1111195 1109888] - [net] neigh: set NUD_INCOMPLETE when probing router reachability (Marcelo Ricardo Leitner) [1106354 1090806] - [net] ipv6: router reachability probing (Marcelo Ricardo Leitner) [1106354 1090806] - [net] ipv6: probe routes asynchronous in rt6_probe (Marcelo Ricardo Leitner) [1106354 1090806] - [net] ndisc: Update neigh->updated with write lock (Marcelo Ricardo Leitner) [1106354 1090806] - [net] ipv6: remove the unnecessary statement in find_match() (Marcelo Ricardo Leitner) [1106354 1090806] - [net] ipv6: fix route selection if CONFIG_IPV6_ROUTER_PREF unset (Marcelo Ricardo Leitner) [1106354 1090806] - [net] ipv6: Fix def route failover when CONFIG_IPV6_ROUTER_PREF=n (Marcelo Ricardo Leitner) [1106354 1090806] - [net] ipv6: Prefer reachable nexthop only if the caller requests (Marcelo Ricardo Leitner) [1106354 1090806] - [fs] ext4/jbd2: don't wait forever stale tid caused by wraparound (Eric Sandeen) [1097528 980268] - [fs] ext4: Initialize fsync transaction ids in ext4_new_inode() (Eric Sandeen) [1097528 980268] - [fs] jbd2: don't wake kjournald unnecessarily (Eric Sandeen) [1097528 980268] - [fs] jbd2: fix fsync() tid wraparound bug (Eric Sandeen) [1097528 980268] - [infiniband] rds: do not deref NULL dev in rds_iw_laddr_check() (Jacob Tanenbaum) [1093311 1093312] {CVE-2014-2678} - [fs] nfs4: Add recovery for individual stateids - partial backport. (Dave Wysochanski) [1113468 867570] - [fs] nfs4: Don't start state recovery in nfs4_close_done - clean backport. (Dave Wysochanski) [1113468 867570] - [xen] page-alloc: scrub anonymous domain heap pages upon freeing (Vitaly Kuznetsov) [1103648 1103649] {CVE-2014-4021}
Family: unix Class: patch
Reference(s): ELSA-2014-0926
CVE-2014-2678
CVE-2014-4021
 Version: 5
Platform(s): Oracle Linux 5
 Product(s): kernel
Definition Synopsis:

CPE : Common Platform Enumeration

TypeDescriptionCount
Os 24

Information Assurance Vulnerability Management (IAVM)

Date Description
2014-07-24 IAVM : 2014-B-0099 - Multiple Vulnerabilities in Citrix XenServer
Severity : Category I - VMSKEY : V0053313

Nessus® Vulnerability Scanner

Date Description
2015-05-20 Name : The remote SUSE host is missing one or more security updates.
File : suse_SU-2014-1691-1.nasl - Type : ACT_GATHER_INFO
2015-05-20 Name : The remote SUSE host is missing one or more security updates.
File : suse_SU-2014-1710-1.nasl - Type : ACT_GATHER_INFO
2015-05-20 Name : The remote SUSE host is missing one or more security updates.
File : suse_SU-2014-1732-1.nasl - Type : ACT_GATHER_INFO
2015-01-23 Name : The remote OracleVM host is missing one or more security updates.
File : oraclevm_OVMSA-2015-0004.nasl - Type : ACT_GATHER_INFO
2014-10-23 Name : The remote SuSE 11 host is missing one or more security updates.
File : suse_11_xen-201409-141002.nasl - Type : ACT_GATHER_INFO
2014-10-10 Name : The remote openSUSE host is missing a security update.
File : openSUSE-2014-579.nasl - Type : ACT_GATHER_INFO
2014-10-10 Name : The remote openSUSE host is missing a security update.
File : openSUSE-2014-580.nasl - Type : ACT_GATHER_INFO
2014-08-19 Name : The remote Debian host is missing a security-related update.
File : debian_DSA-3006.nasl - Type : ACT_GATHER_INFO
2014-07-27 Name : The remote Oracle Linux host is missing one or more security updates.
File : oraclelinux_ELSA-2014-0926.nasl - Type : ACT_GATHER_INFO
2014-07-25 Name : The remote CentOS host is missing one or more security updates.
File : centos_RHSA-2014-0926.nasl - Type : ACT_GATHER_INFO
2014-07-25 Name : The remote Scientific Linux host is missing one or more security updates.
File : sl_20140723_kernel_on_SL5_x.nasl - Type : ACT_GATHER_INFO
2014-07-24 Name : The remote device is missing a vendor-supplied security patch.
File : citrix_xenserver_CTX140984.nasl - Type : ACT_GATHER_INFO
2014-07-24 Name : The remote Red Hat host is missing one or more security updates.
File : redhat-RHSA-2014-0926.nasl - Type : ACT_GATHER_INFO
2014-07-17 Name : The remote Gentoo host is missing one or more security-related patches.
File : gentoo_GLSA-201407-03.nasl - Type : ACT_GATHER_INFO
2014-07-05 Name : The remote Fedora host is missing a security update.
File : fedora_2014-7722.nasl - Type : ACT_GATHER_INFO
2014-07-05 Name : The remote Fedora host is missing a security update.
File : fedora_2014-7734.nasl - Type : ACT_GATHER_INFO

Sources (Detail)

http://linux.oracle.com/errata/ELSA-2014-0926-1.html
http://linux.oracle.com/errata/ELSA-2014-0926.html
http://lists.fedoraproject.org/pipermail/package-announce/2014-July/135068.html
http://lists.fedoraproject.org/pipermail/package-announce/2014-July/135071.html
http://lists.opensuse.org/opensuse-security-announce/2014-10/msg00002.html
http://lists.opensuse.org/opensuse-security-announce/2014-10/msg00003.html
http://secunia.com/advisories/59208
http://secunia.com/advisories/60027
http://secunia.com/advisories/60130
http://secunia.com/advisories/60471
http://security.gentoo.org/glsa/glsa-201407-03.xml
http://support.citrix.com/article/CTX140984
http://www.debian.org/security/2014/dsa-3006
http://www.securityfocus.com/bid/68070
http://www.securitytracker.com/id/1030442
http://xenbits.xen.org/xsa/advisory-100.html
Source Url

Alert History

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Date Informations
2024-11-28 12:41:16
  • Multiple Updates
2021-05-04 12:33:14
  • Multiple Updates
2021-04-22 01:39:44
  • Multiple Updates
2020-05-23 00:41:19
  • Multiple Updates
2018-10-31 00:20:38
  • Multiple Updates
2017-01-07 09:25:36
  • Multiple Updates
2016-06-29 00:36:23
  • Multiple Updates
2016-04-27 00:56:40
  • Multiple Updates
2015-05-21 13:31:25
  • Multiple Updates
2015-01-24 13:23:37
  • Multiple Updates
2014-12-12 09:23:29
  • Multiple Updates
2014-12-03 09:27:04
  • Multiple Updates
2014-10-24 13:25:31
  • Multiple Updates
2014-10-11 13:26:24
  • Multiple Updates
2014-08-20 13:25:58
  • Multiple Updates
2014-08-01 09:22:37
  • Multiple Updates
2014-07-28 13:24:45
  • Multiple Updates
2014-07-26 13:27:51
  • Multiple Updates
2014-07-26 00:20:35
  • Multiple Updates
2014-07-25 13:21:53
  • Multiple Updates
2014-07-24 09:24:23
  • Multiple Updates
2014-07-18 13:24:31
  • Multiple Updates
2014-07-06 13:25:14
  • Multiple Updates
2014-06-26 09:25:18
  • Multiple Updates
2014-06-20 00:24:21
  • Multiple Updates
2014-06-19 00:23:12
  • First insertion