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OVAL Definitions
>
OVAL Definition Details
Id
oval:com.altx-soft.nix:def:104330
[Rus]
Version
5
Class
patch
ALTXid
288217
Language
English
Severity
High
Title
RHSA-2019:1946 -- kernel security, bug fix, and enhancement update
Description
An industry-wide issue was found in the way many modern microprocessor designs have implemented speculative execution of instructions past bounds check. The flaw relies on the presence of a precisely-defined instruction sequence in the privileged code and the fact that memory writes occur to an address which depends on the untrusted value. Such writes cause an update into the microprocessor's data cache even for speculatively executed instructions that never actually commit (retire). As a result, an unprivileged attacker could use this flaw to influence speculative execution and/or read privileged memory by conducting targeted cache side-channel attacks. (CVE-2018-3693)
Kernel: kvm: nVMX: L2 guest could access hardware(L0) CR8 register (CVE-2017-12154)
kernel: net: double-free and memory corruption in get_net_ns_by_id() (CVE-2017-15129)
kernel: dereferencing NULL payload with nonzero length (CVE-2017-15274)
kernel: stack-based buffer overflow in chap_server_compute_md5() in iscsi target (CVE-2018-14633)
Family
unix
Platform
Red Hat Enterprise Linux 7
Product
kernel
Reference
VENDOR: RHSA-2019:1946
VENDOR: RHSA-2019:1946
Id:
RHSA-2019:1946
Reference:
https://access.redhat.com/errata/RHSA-2019:1946
CVE: CVE-2017-12154
CVE: CVE-2017-12154
Id:
CVE-2017-12154
Reference:
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-12154
Comment
: The prepare_vmcs02 function in arch/x86/kvm/vmx.c in the Linux kernel through 4.13.3 does not ensure that the "CR8-load exiting" and "CR8-store exiting" L0 vmcs02 controls exist in cases where L1 omits the "use TPR shadow" vmcs12 control, which allows KVM L2 guest OS users to obtain read and write access to the hardware CR8 register.
CVSSv2 Score:
3.6
Access vector:
LOCAL
Access complexity:
LOW
Authentication:
NONE
Confidentiality impact:
PARTIAL
Integrity impact:
PARTIAL
Availability impact:
NONE
CVSSv2 Vector:
AV:L/AC:L/Au:N/C:P/I:P/A:N
CVSSv3 Score:
7.1
Attack vector:
LOCAL
Attack complexity:
LOW
Privileges required:
LOW
User interaction:
NONE
Scope:
UNCHANGED
Confidentiality impact:
HIGH
Integrity impact:
HIGH
Availability impact:
NONE
CVSSv3 Vector:
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
References:
https://www.spinics.net/lists/kvm/msg155414.html (CONFIRM)
https://github.com/torvalds/linux/commit/51aa68e7d57e3217192d88ce90fd5b8ef29ec94f (CONFIRM)
https://bugzilla.redhat.com/show_bug.cgi?id=1491224 (CONFIRM)
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=51aa68e7d57e3217192d88ce90fd5b8ef29ec94f (CONFIRM)
100856 (BID)
DSA-3981 (DEBIAN)
RHSA-2018:1062 (REDHAT)
RHSA-2018:0676 (REDHAT)
USN-3698-2 (UBUNTU)
USN-3698-1 (UBUNTU)
RHSA-2019:1946 (REDHAT)
CVE: CVE-2017-15129
CVE: CVE-2017-15129
Id:
CVE-2017-15129
Reference:
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-15129
Comment
: A use-after-free vulnerability was found in network namespaces code affecting the Linux kernel before 4.14.11. The function get_net_ns_by_id() in net/core/net_namespace.c does not check for the net::count value after it has found a peer network in netns_ids idr, which could lead to double free and memory corruption. This vulnerability could allow an unprivileged local user to induce kernel memory corruption on the system, leading to a crash. Due to the nature of the flaw, privilege escalation cannot be fully ruled out, although it is thought to be unlikely.
CVSSv2 Score:
4.9
Access vector:
LOCAL
Access complexity:
LOW
Authentication:
NONE
Confidentiality impact:
NONE
Integrity impact:
NONE
Availability impact:
COMPLETE
CVSSv2 Vector:
AV:L/AC:L/Au:N/C:N/I:N/A:C
CVSSv3 Score:
4.7
Attack vector:
LOCAL
Attack complexity:
HIGH
Privileges required:
LOW
User interaction:
NONE
Scope:
UNCHANGED
Confidentiality impact:
NONE
Integrity impact:
NONE
Availability impact:
HIGH
CVSSv3 Vector:
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE:
362 (Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition'))
References:
https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.11 (MISC)
https://github.com/torvalds/linux/commit/21b5944350052d2583e82dd59b19a9ba94a007f0 (MISC)
https://bugzilla.redhat.com/show_bug.cgi?id=1531174 (MISC)
https://access.redhat.com/security/cve/CVE-2017-15129 (MISC)
http://seclists.org/oss-sec/2018/q1/7 (MISC)
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=21b5944350052d2583e82dd59b19a9ba94a007f0 (MISC)
https://marc.info/?t=151370468900001&r=1&w=2 (MISC)
https://marc.info/?l=linux-netdev&m=151370451121029&w=2 (MISC)
USN-3617-2 (UBUNTU)
USN-3617-1 (UBUNTU)
USN-3619-1 (UBUNTU)
USN-3617-3 (UBUNTU)
USN-3619-2 (UBUNTU)
RHSA-2018:0654 (REDHAT)
RHSA-2018:1062 (REDHAT)
RHSA-2018:0676 (REDHAT)
USN-3632-1 (UBUNTU)
102485 (BID)
RHSA-2019:1946 (REDHAT)
CVE: CVE-2017-15274
CVE: CVE-2017-15274
Id:
CVE-2017-15274
Reference:
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-15274
Comment
: security/keys/keyctl.c in the Linux kernel before 4.11.5 does not consider the case of a NULL payload in conjunction with a nonzero length value, which allows local users to cause a denial of service (NULL pointer dereference and OOPS) via a crafted add_key or keyctl system call, a different vulnerability than CVE-2017-12192.
CVSSv2 Score:
4.9
Access vector:
LOCAL
Access complexity:
LOW
Authentication:
NONE
Confidentiality impact:
NONE
Integrity impact:
NONE
Availability impact:
COMPLETE
CVSSv2 Vector:
AV:L/AC:L/Au:N/C:N/I:N/A:C
CVSSv3 Score:
5.5
Attack vector:
LOCAL
Attack complexity:
LOW
Privileges required:
LOW
User interaction:
NONE
Scope:
UNCHANGED
Confidentiality impact:
NONE
Integrity impact:
NONE
Availability impact:
HIGH
CVSSv3 Vector:
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE:
476 (NULL Pointer Dereference)
References:
https://patchwork.kernel.org/patch/9781573/ (CONFIRM)
https://github.com/torvalds/linux/commit/5649645d725c73df4302428ee4e02c869248b4c5 (CONFIRM)
https://bugzilla.suse.com/show_bug.cgi?id=1045327 (CONFIRM)
http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.11.5 (CONFIRM)
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=5649645d725c73df4302428ee4e02c869248b4c5 (CONFIRM)
101292 (BID)
USN-3583-2 (UBUNTU)
USN-3583-1 (UBUNTU)
RHSA-2019:1946 (REDHAT)
CVE: CVE-2018-3693
CVE: CVE-2018-3693
Id:
CVE-2018-3693
Reference:
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-3693
Comment
: Systems with microprocessors utilizing speculative execution and branch prediction may allow unauthorized disclosure of information to an attacker with local user access via a speculative buffer overflow and side-channel analysis.
CVSSv2 Score:
4.7
Access vector:
LOCAL
Access complexity:
MEDIUM
Authentication:
NONE
Confidentiality impact:
COMPLETE
Integrity impact:
NONE
Availability impact:
NONE
CVSSv2 Vector:
AV:L/AC:M/Au:N/C:C/I:N/A:N
CVSSv3 Score:
5.6
Attack vector:
LOCAL
Attack complexity:
HIGH
Privileges required:
LOW
User interaction:
NONE
Scope:
CHANGED
Confidentiality impact:
HIGH
Integrity impact:
NONE
Availability impact:
NONE
CVSSv3 Vector:
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N
References:
RHSA-2018:2395 (REDHAT)
RHSA-2018:2390 (REDHAT)
RHSA-2018:2384 (REDHAT)
https://security.netapp.com/advisory/ntap-20180823-0001/ (CONFIRM)
https://help.ecostruxureit.com/display/public/UADCE725/Security+fixes+in+StruxureWare+Data+Center+Expert+v7.6.0 (CONFIRM)
https://www.oracle.com/technetwork/security-advisory/cpuapr2019-5072813.html (MISC)
RHSA-2019:1946 (REDHAT)
RHSA-2020:0174 (REDHAT)
https://www.oracle.com/security-alerts/cpujul2020.html (MISC)
https://www.oracle.com/security-alerts/cpuoct2020.html (MISC)
https://cdrdv2.intel.com/v1/dl/getContent/685359 (CONFIRM)
CVE: CVE-2018-14633
CVE: CVE-2018-14633
Id:
CVE-2018-14633
Reference:
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-14633
Comment
: A security flaw was found in the chap_server_compute_md5() function in the ISCSI target code in the Linux kernel in a way an authentication request from an ISCSI initiator is processed. An unauthenticated remote attacker can cause a stack buffer overflow and smash up to 17 bytes of the stack. The attack requires the iSCSI target to be enabled on the victim host. Depending on how the target's code was built (i.e. depending on a compiler, compile flags and hardware architecture) an attack may lead to a system crash and thus to a denial-of-service or possibly to a non-authorized access to data exported by an iSCSI target. Due to the nature of the flaw, privilege escalation cannot be fully ruled out, although we believe it is highly unlikely. Kernel versions 4.18.x, 4.14.x and 3.10.x are believed to be vulnerable.
CVSSv2 Score:
8.3
Access vector:
NETWORK
Access complexity:
MEDIUM
Authentication:
NONE
Confidentiality impact:
PARTIAL
Integrity impact:
PARTIAL
Availability impact:
COMPLETE
CVSSv2 Vector:
AV:N/AC:M/Au:N/C:P/I:P/A:C
CVSSv3 Score:
7
Attack vector:
NETWORK
Attack complexity:
HIGH
Privileges required:
NONE
User interaction:
NONE
Scope:
UNCHANGED
Confidentiality impact:
LOW
Integrity impact:
LOW
Availability impact:
HIGH
CVSSv3 Vector:
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:H
CWE:
121 (Stack-based Buffer Overflow)
References:
https://seclists.org/oss-sec/2018/q3/270 (MISC)
https://git.kernel.org/pub/scm/linux/kernel/git/mkp/scsi.git/commit/?h=4.19/scsi-fixes&id=8c39e2699f8acb2e29782a834e56306da24937fe (CONFIRM)
https://git.kernel.org/pub/scm/linux/kernel/git/mkp/scsi.git/commit/?h=4.19/scsi-fixes&id=1816494330a83f2a064499d8ed2797045641f92c (CONFIRM)
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-14633 (CONFIRM)
105388 (BID)
DSA-4308 (DEBIAN)
USN-3777-2 (UBUNTU)
USN-3777-1 (UBUNTU)
USN-3776-2 (UBUNTU)
USN-3776-1 (UBUNTU)
USN-3775-2 (UBUNTU)
USN-3779-1 (UBUNTU)
USN-3775-1 (UBUNTU)
[debian-lts-announce] 20181003 [SECURITY] [DLA 1531-1] linux-4.9 security update (MLIST)
USN-3777-3 (UBUNTU)
RHSA-2018:3666 (REDHAT)
RHSA-2018:3651 (REDHAT)
RHSA-2019:1946 (REDHAT)
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