CVE-2018-0294 Vulnerability Analysis & Exploit Details

CVE-2018-0294
Vulnerability Scoring

6.7
/10
High Risk

If left unpatched, CVE-2018-0294 could lead to major system disruptions or data loss.

Attack Complexity Details

  • Attack Complexity: Low
    Exploits can be performed without significant complexity or special conditions.
  • Attack Vector: Local
    Vulnerability requires local system access.
  • Privileges Required: High
    High-level privileges are required for exploitation.
  • Scope: Unchanged
    Exploit remains within the originally vulnerable component.
  • User Interaction: None
    No user interaction is necessary for exploitation.

CVE-2018-0294 Details

Status: Modified

Last updated: 🕞 21 Nov 2024, 03:37 UTC
Originally published on: 🕘 20 Jun 2018, 21:29 UTC

Time between publication and last update: 2345 days

CVSS Release: version 3

CVSS3 Source

nvd@nist.gov

CVSS3 Type

Primary

CVSS3 Vector

CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

CVE-2018-0294 Vulnerability Summary

CVE-2018-0294: A vulnerability in the write-erase feature of Cisco FXOS Software and Cisco NX-OS Software could allow an authenticated, local attacker to configure an unauthorized administrator account for an affected device. The vulnerability exists because the affected software does not properly delete sensitive files when certain CLI commands are used to clear the device configuration and reload a device. An attacker could exploit this vulnerability by logging into an affected device as an administrative user and configuring an unauthorized account for the device. The account would not require a password for authentication and would be accessible only via a Secure Shell (SSH) connection to the device. A successful exploit could allow the attacker to configure an unauthorized account that has administrative privileges, does not require a password for authentication, and does not appear in the running configuration or the audit logs for the affected device. This vulnerability affects Firepower 4100 Series Next-Generation Firewalls, Firepower 9300 Security Appliance, Nexus 1000V Series Switches, Nexus 1100 Series Cloud Services Platforms, Nexus 2000 Series Fabric Extenders, Nexus 3500 Platform Switches, Nexus 4000 Series Switches, Nexus 5500 Platform Switches, Nexus 5600 Platform Switches, Nexus 6000 Series Switches, UCS 6100 Series Fabric Interconnects, UCS 6200 Series Fabric Interconnects, UCS 6300 Series Fabric Interconnects. Cisco Bug IDs: CSCvd13993, CSCvd34845, CSCvd34857, CSCvd34862, CSCvd34879, CSCve35753.

Assessing the Risk of CVE-2018-0294

Access Complexity Graph

The exploitability of CVE-2018-0294 depends on two key factors: attack complexity (the level of effort required to execute an exploit) and privileges required (the access level an attacker needs).

Exploitability Analysis for CVE-2018-0294

The exploitability of CVE-2018-0294 is influenced by multiple factors. Security teams should analyze system configurations and apply appropriate countermeasures to mitigate threats.

Understanding AC and PR

A lower complexity and fewer privilege requirements make exploitation easier. Security teams should evaluate these aspects to determine the urgency of mitigation strategies, such as patch management and access control policies.

Attack Complexity (AC) measures the difficulty in executing an exploit. A high AC means that specific conditions must be met, making an attack more challenging, while a low AC means the vulnerability can be exploited with minimal effort.

Privileges Required (PR) determine the level of system access necessary for an attack. Vulnerabilities requiring no privileges are more accessible to attackers, whereas high privilege requirements limit exploitation to authorized users with elevated access.

CVSS Score Breakdown Chart

Above is the CVSS Sub-score Breakdown for CVE-2018-0294, illustrating how Base, Impact, and Exploitability factors combine to form the overall severity rating. A higher sub-score typically indicates a more severe or easier-to-exploit vulnerability.

CIA Impact Analysis

Below is the Impact Analysis for CVE-2018-0294, showing how Confidentiality, Integrity, and Availability might be affected if the vulnerability is exploited. Higher values usually signal greater potential damage.

  • Confidentiality: High
    Exploiting CVE-2018-0294 can result in unauthorized access to sensitive data, severely compromising data privacy.
  • Integrity: High
    CVE-2018-0294 could allow unauthorized modifications to data, potentially affecting system reliability and trust.
  • Availability: High
    CVE-2018-0294 can disrupt system operations, potentially causing complete denial of service (DoS).

Exploit Prediction Scoring System (EPSS)

The EPSS score estimates the probability that this vulnerability will be exploited in the near future.

EPSS Score: 0.042% (probability of exploit)

EPSS Percentile: 5.02% (lower percentile = lower relative risk)
This vulnerability is less risky than approximately 94.98% of others.

CVE-2018-0294 References

External References

CWE Common Weakness Enumeration

NVD-CWE-noinfo

Vulnerable Configurations

  • cpe:2.3:o:cisco:nx-os:7.3\(2\)n1\(0.354\):*:*:*:*:*:*:*
    cpe:2.3:o:cisco:nx-os:7.3\(2\)n1\(0.354\):*:*:*:*:*:*:*
  • cpe:2.3:h:cisco:nexus_5000:-:*:*:*:*:*:*:*
    cpe:2.3:h:cisco:nexus_5000:-:*:*:*:*:*:*:*
  • cpe:2.3:h:cisco:nexus_5010:-:*:*:*:*:*:*:*
    cpe:2.3:h:cisco:nexus_5010:-:*:*:*:*:*:*:*
  • cpe:2.3:h:cisco:nexus_5020:-:*:*:*:*:*:*:*
    cpe:2.3:h:cisco:nexus_5020:-:*:*:*:*:*:*:*
  • cpe:2.3:h:cisco:nexus_5548p:-:*:*:*:*:*:*:*
    cpe:2.3:h:cisco:nexus_5548p:-:*:*:*:*:*:*:*
  • cpe:2.3:h:cisco:nexus_5548up:-:*:*:*:*:*:*:*
    cpe:2.3:h:cisco:nexus_5548up:-:*:*:*:*:*:*:*
  • cpe:2.3:h:cisco:nexus_5596t:-:*:*:*:*:*:*:*
    cpe:2.3:h:cisco:nexus_5596t:-:*:*:*:*:*:*:*
  • cpe:2.3:h:cisco:nexus_5596up:-:*:*:*:*:*:*:*
    cpe:2.3:h:cisco:nexus_5596up:-:*:*:*:*:*:*:*
  • cpe:2.3:h:cisco:nexus_56128p:-:*:*:*:*:*:*:*
    cpe:2.3:h:cisco:nexus_56128p:-:*:*:*:*:*:*:*
  • cpe:2.3:h:cisco:nexus_5624q:-:*:*:*:*:*:*:*
    cpe:2.3:h:cisco:nexus_5624q:-:*:*:*:*:*:*:*
  • cpe:2.3:h:cisco:nexus_5648q:-:*:*:*:*:*:*:*
    cpe:2.3:h:cisco:nexus_5648q:-:*:*:*:*:*:*:*
  • cpe:2.3:h:cisco:nexus_5672up:-:*:*:*:*:*:*:*
    cpe:2.3:h:cisco:nexus_5672up:-:*:*:*:*:*:*:*
  • cpe:2.3:h:cisco:nexus_5696q:-:*:*:*:*:*:*:*
    cpe:2.3:h:cisco:nexus_5696q:-:*:*:*:*:*:*:*
  • cpe:2.3:o:cisco:nx-os:5.2\(1\)sv3\(1.10\):*:*:*:*:*:*:*
    cpe:2.3:o:cisco:nx-os:5.2\(1\)sv3\(1.10\):*:*:*:*:*:*:*
  • cpe:2.3:h:cisco:nexus_1000v:-:*:*:*:*:vmware_vsphere:*:*
    cpe:2.3:h:cisco:nexus_1000v:-:*:*:*:*:vmware_vsphere:*:*
  • cpe:2.3:o:cisco:nx-os:8.8\(3.5\)s0:*:*:*:*:*:*:*
    cpe:2.3:o:cisco:nx-os:8.8\(3.5\)s0:*:*:*:*:*:*:*
  • cpe:2.3:h:cisco:nexus_92160yc-x:-:*:*:*:*:*:*:*
    cpe:2.3:h:cisco:nexus_92160yc-x:-:*:*:*:*:*:*:*
  • cpe:2.3:h:cisco:nexus_92304qc:-:*:*:*:*:*:*:*
    cpe:2.3:h:cisco:nexus_92304qc:-:*:*:*:*:*:*:*
  • cpe:2.3:h:cisco:nexus_9236c:-:*:*:*:*:*:*:*
    cpe:2.3:h:cisco:nexus_9236c:-:*:*:*:*:*:*:*
  • cpe:2.3:h:cisco:nexus_9272q:-:*:*:*:*:*:*:*
    cpe:2.3:h:cisco:nexus_9272q:-:*:*:*:*:*:*:*
  • cpe:2.3:h:cisco:nexus_93108tc-ex:-:*:*:*:*:*:*:*
    cpe:2.3:h:cisco:nexus_93108tc-ex:-:*:*:*:*:*:*:*
  • cpe:2.3:h:cisco:nexus_93120tx:-:*:*:*:*:*:*:*
    cpe:2.3:h:cisco:nexus_93120tx:-:*:*:*:*:*:*:*
  • cpe:2.3:h:cisco:nexus_93128tx:-:*:*:*:*:*:*:*
    cpe:2.3:h:cisco:nexus_93128tx:-:*:*:*:*:*:*:*
  • cpe:2.3:h:cisco:nexus_93180yc-ex:-:*:*:*:*:*:*:*
    cpe:2.3:h:cisco:nexus_93180yc-ex:-:*:*:*:*:*:*:*
  • cpe:2.3:h:cisco:nexus_9332pq:-:*:*:*:*:*:*:*
    cpe:2.3:h:cisco:nexus_9332pq:-:*:*:*:*:*:*:*
  • cpe:2.3:h:cisco:nexus_9372px:-:*:*:*:*:*:*:*
    cpe:2.3:h:cisco:nexus_9372px:-:*:*:*:*:*:*:*
  • cpe:2.3:h:cisco:nexus_9372tx:-:*:*:*:*:*:*:*
    cpe:2.3:h:cisco:nexus_9372tx:-:*:*:*:*:*:*:*
  • cpe:2.3:h:cisco:nexus_9396px:-:*:*:*:*:*:*:*
    cpe:2.3:h:cisco:nexus_9396px:-:*:*:*:*:*:*:*
  • cpe:2.3:h:cisco:nexus_9396tx:-:*:*:*:*:*:*:*
    cpe:2.3:h:cisco:nexus_9396tx:-:*:*:*:*:*:*:*
  • cpe:2.3:h:cisco:nexus_9504:-:*:*:*:*:*:*:*
    cpe:2.3:h:cisco:nexus_9504:-:*:*:*:*:*:*:*
  • cpe:2.3:h:cisco:nexus_9508:-:*:*:*:*:*:*:*
    cpe:2.3:h:cisco:nexus_9508:-:*:*:*:*:*:*:*
  • cpe:2.3:h:cisco:nexus_9516:-:*:*:*:*:*:*:*
    cpe:2.3:h:cisco:nexus_9516:-:*:*:*:*:*:*:*
  • cpe:2.3:h:cisco:nexus_n9k-c9508-fm-r:-:*:*:*:*:*:*:*
    cpe:2.3:h:cisco:nexus_n9k-c9508-fm-r:-:*:*:*:*:*:*:*
  • cpe:2.3:h:cisco:nexus_n9k-x9636c-r:-:*:*:*:*:*:*:*
    cpe:2.3:h:cisco:nexus_n9k-x9636c-r:-:*:*:*:*:*:*:*
  • cpe:2.3:h:cisco:nexus_n9k-x9636q-r:-:*:*:*:*:*:*:*
    cpe:2.3:h:cisco:nexus_n9k-x9636q-r:-:*:*:*:*:*:*:*
  • cpe:2.3:o:cisco:nx-os:7.0\(3\)i2\(4a\):*:*:*:*:*:*:*
    cpe:2.3:o:cisco:nx-os:7.0\(3\)i2\(4a\):*:*:*:*:*:*:*
  • cpe:2.3:h:cisco:nexus_172tq-xl:-:*:*:*:*:*:*:*
    cpe:2.3:h:cisco:nexus_172tq-xl:-:*:*:*:*:*:*:*
  • cpe:2.3:h:cisco:nexus_3016:-:*:*:*:*:*:*:*
    cpe:2.3:h:cisco:nexus_3016:-:*:*:*:*:*:*:*
  • cpe:2.3:h:cisco:nexus_3048:-:*:*:*:*:*:*:*
    cpe:2.3:h:cisco:nexus_3048:-:*:*:*:*:*:*:*
  • cpe:2.3:h:cisco:nexus_3064-32t:-:*:*:*:*:*:*:*
    cpe:2.3:h:cisco:nexus_3064-32t:-:*:*:*:*:*:*:*
  • cpe:2.3:h:cisco:nexus_3064-t:-:*:*:*:*:*:*:*
    cpe:2.3:h:cisco:nexus_3064-t:-:*:*:*:*:*:*:*
  • cpe:2.3:h:cisco:nexus_3064-x:-:*:*:*:*:*:*:*
    cpe:2.3:h:cisco:nexus_3064-x:-:*:*:*:*:*:*:*
  • cpe:2.3:h:cisco:nexus_3100-v:-:*:*:*:*:*:*:*
    cpe:2.3:h:cisco:nexus_3100-v:-:*:*:*:*:*:*:*
  • cpe:2.3:h:cisco:nexus_31128pq:-:*:*:*:*:*:*:*
    cpe:2.3:h:cisco:nexus_31128pq:-:*:*:*:*:*:*:*
  • cpe:2.3:h:cisco:nexus_3132c-z:-:*:*:*:*:*:*:*
    cpe:2.3:h:cisco:nexus_3132c-z:-:*:*:*:*:*:*:*
  • cpe:2.3:h:cisco:nexus_3132q:-:*:*:*:*:*:*:*
    cpe:2.3:h:cisco:nexus_3132q:-:*:*:*:*:*:*:*
  • cpe:2.3:h:cisco:nexus_3132q-x:-:*:*:*:*:*:*:*
    cpe:2.3:h:cisco:nexus_3132q-x:-:*:*:*:*:*:*:*
  • cpe:2.3:h:cisco:nexus_3132q-xl:-:*:*:*:*:*:*:*
    cpe:2.3:h:cisco:nexus_3132q-xl:-:*:*:*:*:*:*:*
  • cpe:2.3:h:cisco:nexus_3164q:-:*:*:*:*:*:*:*
    cpe:2.3:h:cisco:nexus_3164q:-:*:*:*:*:*:*:*
  • cpe:2.3:h:cisco:nexus_3172pq:-:*:*:*:*:*:*:*
    cpe:2.3:h:cisco:nexus_3172pq:-:*:*:*:*:*:*:*
  • cpe:2.3:h:cisco:nexus_3172pq-xl:-:*:*:*:*:*:*:*
    cpe:2.3:h:cisco:nexus_3172pq-xl:-:*:*:*:*:*:*:*
  • cpe:2.3:h:cisco:nexus_3172tq:-:*:*:*:*:*:*:*
    cpe:2.3:h:cisco:nexus_3172tq:-:*:*:*:*:*:*:*
  • cpe:2.3:h:cisco:nexus_3172tq-32t:-:*:*:*:*:*:*:*
    cpe:2.3:h:cisco:nexus_3172tq-32t:-:*:*:*:*:*:*:*
  • cpe:2.3:h:cisco:nexus_3232c:-:*:*:*:*:*:*:*
    cpe:2.3:h:cisco:nexus_3232c:-:*:*:*:*:*:*:*
  • cpe:2.3:h:cisco:nexus_3264c-e:-:*:*:*:*:*:*:*
    cpe:2.3:h:cisco:nexus_3264c-e:-:*:*:*:*:*:*:*
  • cpe:2.3:h:cisco:nexus_3264q:-:*:*:*:*:*:*:*
    cpe:2.3:h:cisco:nexus_3264q:-:*:*:*:*:*:*:*
  • cpe:2.3:h:cisco:nexus_34180yc:-:*:*:*:*:*:*:*
    cpe:2.3:h:cisco:nexus_34180yc:-:*:*:*:*:*:*:*
  • cpe:2.3:h:cisco:nexus_3524-x:-:*:*:*:*:*:*:*
    cpe:2.3:h:cisco:nexus_3524-x:-:*:*:*:*:*:*:*
  • cpe:2.3:h:cisco:nexus_3524-xl:-:*:*:*:*:*:*:*
    cpe:2.3:h:cisco:nexus_3524-xl:-:*:*:*:*:*:*:*
  • cpe:2.3:h:cisco:nexus_3548:-:*:*:*:*:*:*:*
    cpe:2.3:h:cisco:nexus_3548:-:*:*:*:*:*:*:*
  • cpe:2.3:h:cisco:nexus_3548-x:-:*:*:*:*:*:*:*
    cpe:2.3:h:cisco:nexus_3548-x:-:*:*:*:*:*:*:*
  • cpe:2.3:h:cisco:nexus_3548-xl:-:*:*:*:*:*:*:*
    cpe:2.3:h:cisco:nexus_3548-xl:-:*:*:*:*:*:*:*
  • cpe:2.3:h:cisco:nexus_3636c-r:-:*:*:*:*:*:*:*
    cpe:2.3:h:cisco:nexus_3636c-r:-:*:*:*:*:*:*:*
  • cpe:2.3:h:cisco:nexus_c36180yc-r:-:*:*:*:*:*:*:*
    cpe:2.3:h:cisco:nexus_c36180yc-r:-:*:*:*:*:*:*:*
  • cpe:2.3:h:cisco:ucs_6120xp:-:*:*:*:*:*:*:*
    cpe:2.3:h:cisco:ucs_6120xp:-:*:*:*:*:*:*:*
  • cpe:2.3:h:cisco:ucs_6140xp:-:*:*:*:*:*:*:*
    cpe:2.3:h:cisco:ucs_6140xp:-:*:*:*:*:*:*:*
  • cpe:2.3:h:cisco:ucs_6248up:-:*:*:*:*:*:*:*
    cpe:2.3:h:cisco:ucs_6248up:-:*:*:*:*:*:*:*
  • cpe:2.3:h:cisco:ucs_6296up:-:*:*:*:*:*:*:*
    cpe:2.3:h:cisco:ucs_6296up:-:*:*:*:*:*:*:*
  • cpe:2.3:h:cisco:ucs_6324:-:*:*:*:*:*:*:*
    cpe:2.3:h:cisco:ucs_6324:-:*:*:*:*:*:*:*
  • cpe:2.3:h:cisco:ucs_6332:-:*:*:*:*:*:*:*
    cpe:2.3:h:cisco:ucs_6332:-:*:*:*:*:*:*:*
  • cpe:2.3:o:cisco:firepower_extensible_operating_system:2.1.1:*:*:*:*:*:*:*
    cpe:2.3:o:cisco:firepower_extensible_operating_system:2.1.1:*:*:*:*:*:*:*
  • cpe:2.3:o:cisco:firepower_extensible_operating_system:2.1.1.64:*:*:*:*:*:*:*
    cpe:2.3:o:cisco:firepower_extensible_operating_system:2.1.1.64:*:*:*:*:*:*:*
  • cpe:2.3:o:cisco:firepower_extensible_operating_system:2.1.1.73:*:*:*:*:*:*:*
    cpe:2.3:o:cisco:firepower_extensible_operating_system:2.1.1.73:*:*:*:*:*:*:*
  • cpe:2.3:o:cisco:firepower_extensible_operating_system:2.1.1.77:*:*:*:*:*:*:*
    cpe:2.3:o:cisco:firepower_extensible_operating_system:2.1.1.77:*:*:*:*:*:*:*
  • cpe:2.3:o:cisco:firepower_extensible_operating_system:2.1.1.83:*:*:*:*:*:*:*
    cpe:2.3:o:cisco:firepower_extensible_operating_system:2.1.1.83:*:*:*:*:*:*:*
  • cpe:2.3:o:cisco:firepower_extensible_operating_system:2.1.1.85:*:*:*:*:*:*:*
    cpe:2.3:o:cisco:firepower_extensible_operating_system:2.1.1.85:*:*:*:*:*:*:*
  • cpe:2.3:o:cisco:firepower_extensible_operating_system:2.2:*:*:*:*:*:*:*
    cpe:2.3:o:cisco:firepower_extensible_operating_system:2.2:*:*:*:*:*:*:*
  • cpe:2.3:o:cisco:firepower_extensible_operating_system:2.2.1:*:*:*:*:*:*:*
    cpe:2.3:o:cisco:firepower_extensible_operating_system:2.2.1:*:*:*:*:*:*:*
  • cpe:2.3:o:cisco:firepower_extensible_operating_system:2.2\(1.58\):*:*:*:*:*:*:*
    cpe:2.3:o:cisco:firepower_extensible_operating_system:2.2\(1.58\):*:*:*:*:*:*:*
  • cpe:2.3:o:cisco:firepower_extensible_operating_system:2.2.1.63:*:*:*:*:*:*:*
    cpe:2.3:o:cisco:firepower_extensible_operating_system:2.2.1.63:*:*:*:*:*:*:*
  • cpe:2.3:o:cisco:firepower_extensible_operating_system:2.2.1.66:*:*:*:*:*:*:*
    cpe:2.3:o:cisco:firepower_extensible_operating_system:2.2.1.66:*:*:*:*:*:*:*
  • cpe:2.3:o:cisco:firepower_extensible_operating_system:2.2.1.70:*:*:*:*:*:*:*
    cpe:2.3:o:cisco:firepower_extensible_operating_system:2.2.1.70:*:*:*:*:*:*:*
  • cpe:2.3:o:cisco:firepower_extensible_operating_system:2.2.2:*:*:*:*:*:*:*
    cpe:2.3:o:cisco:firepower_extensible_operating_system:2.2.2:*:*:*:*:*:*:*
  • cpe:2.3:h:cisco:firepower_4110:-:*:*:*:*:*:*:*
    cpe:2.3:h:cisco:firepower_4110:-:*:*:*:*:*:*:*
  • cpe:2.3:h:cisco:firepower_4120:-:*:*:*:*:*:*:*
    cpe:2.3:h:cisco:firepower_4120:-:*:*:*:*:*:*:*
  • cpe:2.3:h:cisco:firepower_4140:-:*:*:*:*:*:*:*
    cpe:2.3:h:cisco:firepower_4140:-:*:*:*:*:*:*:*
  • cpe:2.3:h:cisco:firepower_4150:-:*:*:*:*:*:*:*
    cpe:2.3:h:cisco:firepower_4150:-:*:*:*:*:*:*:*
  • cpe:2.3:h:cisco:firepower_9300_security_appliance:-:*:*:*:*:*:*:*
    cpe:2.3:h:cisco:firepower_9300_security_appliance:-:*:*:*:*:*:*:*
  • cpe:2.3:o:cisco:nx-os:4.1\(2\)e1\(1a\):*:*:*:*:*:*:*
    cpe:2.3:o:cisco:nx-os:4.1\(2\)e1\(1a\):*:*:*:*:*:*:*
  • cpe:2.3:h:cisco:nexus_4001:-:*:*:*:*:*:*:*
    cpe:2.3:h:cisco:nexus_4001:-:*:*:*:*:*:*:*

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