Detections
Analytics
Oracle Linux 6 / 7 : Unbreakable Enterprise kernel (ELSA-2019-4670)
high Nessus Plugin ID 125755
Language:
Synopsis
The remote Oracle Linux host is missing one or more security updates.Description
The remote Oracle Linux 6 / 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2019-4670 advisory.- 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. (CVE-2018-14633)
- An issue was discovered in the Linux kernel before 4.20. There is a race condition in smp_task_timedout() and smp_task_done() in drivers/scsi/libsas/sas_expander.c, leading to a use-after-free. (CVE-2018-20836)
- An issue was discovered in the Linux kernel before 5.0.7. A NULL pointer dereference can occur when megasas_create_frame_pool() fails in megasas_alloc_cmds() in drivers/scsi/megaraid/megaraid_sas_base.c.
This causes a Denial of Service, related to a use-after-free. (CVE-2019-11810)
- An issue was discovered in rds_tcp_kill_sock in net/rds/tcp.c in the Linux kernel before 5.0.8. There is a race condition leading to a use-after-free, related to net namespace cleanup. (CVE-2019-11815)
- The do_hidp_sock_ioctl function in net/bluetooth/hidp/sock.c in the Linux kernel before 5.0.15 allows a local user to obtain potentially sensitive information from kernel stack memory via a HIDPCONNADD command, because a name field may not end with a '\0' character. (CVE-2019-11884)
- A heap address information leak while using L2CAP_GET_CONF_OPT was discovered in the Linux kernel before 5.1-rc1. (CVE-2019-3459)
- A flaw was found in the Linux kernel in the function hid_debug_events_read() in drivers/hid/hid-debug.c file which may enter an infinite loop with certain parameters passed from a userspace. A local privileged user (root) can cause a system lock up and a denial of service. Versions from v4.18 and newer are vulnerable. (CVE-2019-3819)
Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.
Solution
Update the affected packages.See Also
Plugin Details
Severity: High
ID: 125755
File Name: oraclelinux_ELSA-2019-4670.nasl
Version: 1.7
Type: local
Agent: unix
Published: 6/7/2019
Updated: 9/8/2021
Supported Sensors: Frictionless Assessment Agent, Nessus Agent, Nessus
Risk Information
VPR
Risk Factor: High
Score: 7.4
CVSS v2
Risk Factor: High
Base Score: 9.3
Temporal Score: 6.9
Vector: CVSS2#AV:N/AC:M/Au:N/C:C/I:C/A:C
CVSS Score Source: CVE-2019-11815
CVSS v3
Risk Factor: High
Base Score: 8.1
Temporal Score: 7.1
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C
Vulnerability Information
CPE: cpe:/o:oracle:linux:6, cpe:/o:oracle:linux:7, p-cpe:/a:oracle:linux:kernel-uek, p-cpe:/a:oracle:linux:kernel-uek-debug, p-cpe:/a:oracle:linux:kernel-uek-debug-devel, p-cpe:/a:oracle:linux:kernel-uek-devel, p-cpe:/a:oracle:linux:kernel-uek-doc, p-cpe:/a:oracle:linux:kernel-uek-firmware
Required KB Items: Host/OracleLinux, Host/RedHat/release, Host/RedHat/rpm-list, Host/local_checks_enabled
Exploit Ease: No known exploits are available
Patch Publication Date: 6/4/2019
Vulnerability Publication Date: 9/24/2018
Reference Information
CVE: CVE-2018-14633, CVE-2018-20836, CVE-2019-11810, CVE-2019-11815, CVE-2019-11884, CVE-2019-3459, CVE-2019-3819