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OVAL Definitions
>
OVAL Definition Details
Id
oval:ru.altx-soft.nix:def:92779
[Eng]
Version
6
Class
patch
ALTXid
267758
Language
Russian
Severity
Medium
Title
Обновление RHSA-2018:3666 : устранение уязвимостей и ошибок в kernel-rt
Description
kernel: stack-based buffer overflow in chap_server_compute_md5() in iscsi target (CVE-2018-14633)
kernel: NULL pointer dereference in af_netlink.c:__netlink_ns_capable() allows for denial of service (CVE-2018-14646)
Family
unix
Platform
Red Hat Enterprise Linux 7
Product
kernel-rt
Reference
VENDOR: RHSA-2018:3666
VENDOR: RHSA-2018:3666
Id:
RHSA-2018:3666
Reference:
https://access.redhat.com/errata/RHSA-2018:3666
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)
CVE: CVE-2018-14646
CVE: CVE-2018-14646
Id:
CVE-2018-14646
Reference:
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-14646
Comment
: The Linux kernel before 4.15-rc8 was found to be vulnerable to a NULL pointer dereference bug in the __netlink_ns_capable() function in the net/netlink/af_netlink.c file. A local attacker could exploit this when a net namespace with a netnsid is assigned to cause a kernel panic and a denial of service.
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://marc.info/?l=linux-netdev&m=151500466401174&w=2 (CONFIRM)
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=f428fe4a04cc339166c8bbd489789760de3a0cee (CONFIRM)
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-14646 (CONFIRM)
RHSA-2018:3666 (REDHAT)
RHSA-2018:3651 (REDHAT)
RHSA-2018:3843 (REDHAT)
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