Oracle Linux 6 / 7 : Unbreakable Enterprise kernel (ELSA-2019-4810)
high Nessus Plugin ID 129551
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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-2019-4810 advisory.- In the Linux kernel before 5.2.3, set_geometry in drivers/block/floppy.c does not validate the sect and head fields, as demonstrated by an integer overflow and out-of-bounds read. It can be triggered by an unprivileged local user when a floppy disk has been inserted. NOTE: QEMU creates the floppy device by default. (CVE-2019-14283)
- In the Linux kernel, a certain net/ipv4/tcp_output.c change, which was properly incorporated into 4.16.12, was incorrectly backported to the earlier longterm kernels, introducing a new vulnerability that was potentially more severe than the issue that was intended to be fixed by backporting. Specifically, by adding to a write queue between disconnection and re-connection, a local attacker can trigger multiple use-after-free conditions. This can result in a kernel crash, or potentially in privilege escalation.
NOTE: this affects (for example) Linux distributions that use 4.9.x longterm kernels before 4.9.190 or 4.14.x longterm kernels before 4.14.139. (CVE-2019-15239)
- In the Linux kernel before 4.1.4, a buffer overflow occurs when checking userspace params in drivers/media/dvb-frontends/cx24116.c. The maximum size for a DiSEqC command is 6, according to the userspace API. However, the code allows larger values such as 23. (CVE-2015-9289)
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: 129551
File Name: oraclelinux_ELSA-2019-4810.nasl
Version: 1.5
Type: local
Agent: unix
Published: 10/3/2019
Updated: 9/8/2021
Dependencies: linux_alt_patch_detect.nasl, ssh_get_info.nasl
Risk Information
CVSS Score Source: CVE-2019-15239
VPR
Risk Factor: Medium
Score: 6.7
CVSS v2
Risk Factor: High
Base Score: 7.2
Temporal Score: 5.3
Vector: AV:L/AC:L/Au:N/C:C/I:C/A:C
Temporal Vector: E:U/RL:OF/RC:C
CVSS v3
Risk Factor: High
Base Score: 7.8
Temporal Score: 6.8
Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Temporal Vector: E:U/RL:O/RC:C
Vulnerability Information
CPE: cpe:/o:oracle:linux:6, cpe:/o:oracle:linux:7, p-cpe:/a:oracle:linux:dtrace-modules-3.8.13-118.39.1.el6uek, p-cpe:/a:oracle:linux:dtrace-modules-3.8.13-118.39.1.el7uek, 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: 10/2/2019
Vulnerability Publication Date: 7/26/2019