Detections
Analytics
RancherOS < 1.5.3 Multiple Vulnerabilities (SACK Panic)
high Nessus Plugin ID 132257
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Synopsis
The remote device is missing a vendor-supplied security patchDescription
The remote host is running a version of RancherOS prior to v1.5.3, hence is exposed to multiple vulnerabilities:- Linux Kernel is prone to a remote integer-overflow vulnerability.
An attacker can exploit this issue to cause denial-of-service conditions. (CVE-2019-11477)
- RancherOS is vulnerable to a denial of service; by crafting a sequence of SACKs, an attacker can cause fragmentation of the TCP transmission queue, leading to higher resource use. (CVE-2019-11478)
- Linux kernel default MSS is hard-coded to 48 bytes. This allows a remote peer to fragment TCP resend queues significantly more than if a larger MSS were enforced. A remote attacker could use this to cause a denial of service. (CVE-2019-11479)
Solution
Upgrade to RancherOS v1.5.3 or laterSee Also
https://rancher.com/docs/os/v1.x/en/about/security/
Plugin Details
Severity: High
ID: 132257
File Name: rancheros_1_5_3.nasl
Version: 1.6
Type: local
Family: Misc.
Published: 12/19/2019
Updated: 4/3/2024
Supported Sensors: Nessus
Risk Information
VPR
Risk Factor: Low
Score: 3.6
CVSS v2
Risk Factor: High
Base Score: 7.8
Temporal Score: 5.8
Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C
CVSS Score Source: CVE-2019-11477
CVSS v3
Risk Factor: High
Base Score: 7.5
Temporal Score: 6.5
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C
CVSS Score Source: CVE-2019-11479
Vulnerability Information
CPE: cpe:/o:rancher:rancheros
Required KB Items: Host/local_checks_enabled, Host/RancherOS/version, Host/RancherOS
Exploit Ease: No known exploits are available
Patch Publication Date: 7/11/2019
Vulnerability Publication Date: 6/18/2019