CVE-2020-3419 Security Vulnerability & Exploit Details

CVE-2020-3419
Vulnerability Scoring

9.1

/10

Critical Risk

As a catastrophic security flaw, CVE-2020-3419 has severe implications, demanding immediate intervention.

Attack Complexity Details

Attack Complexity: Low
Exploits can be performed without significant complexity or special conditions.
Attack Vector: Network
Vulnerability is exploitable over a network without physical access.
Privileges Required: None
No 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-2020-3419 Details

Status: Modified

Last updated: 🕒 07 Nov 2023, 03:22 UTC
Originally published on: 🕖 18 Nov 2020, 19:15 UTC

Time between publication and last update: 1083 days

CVSS Release: version 3

CVSS3 Source

nvd@nist.gov

CVSS3 Type

Primary

CVSS3 Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

CVE-2020-3419 Vulnerability Summary

CVE-2020-3419: A vulnerability in Cisco Webex Meetings and Cisco Webex Meetings Server could allow an unauthenticated, remote attacker to join a Webex session without appearing on the participant list. This vulnerability is due to improper handling of authentication tokens by a vulnerable Webex site. An attacker could exploit this vulnerability by sending crafted requests to a vulnerable Cisco Webex Meetings or Cisco Webex Meetings Server site. A successful exploit requires the attacker to have access to join a Webex meeting, including applicable meeting join links and passwords. The attacker could then exploit this vulnerability to join meetings, without appearing in the participant list, while having full access to audio, video, chat, and screen sharing capabilities.

Assessing the Risk of CVE-2020-3419

Access Complexity Graph

The exploitability of CVE-2020-3419 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-2020-3419

With low attack complexity and no required privileges, CVE-2020-3419 is an easy target for cybercriminals. Organizations should prioritize immediate mitigation measures to prevent unauthorized access and data breaches.

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-2020-3419, 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-2020-3419, 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-2020-3419 can result in unauthorized access to sensitive data, severely compromising data privacy.
Integrity: High
CVE-2020-3419 could allow unauthorized modifications to data, potentially affecting system reliability and trust.
Availability: None
CVE-2020-3419 does not impact system availability.

Exploit Prediction Scoring System (EPSS)

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

EPSS Score: 0.449% (probability of exploit)

EPSS Percentile: 75.3% (lower percentile = lower relative risk)
This vulnerability is less risky than approximately 24.700000000000003% of others.

CVE-2020-3419 References

External References

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-webex-auth-token-3vg57A5r

CWE Common Weakness Enumeration

CWE-913

Vulnerable Configurations

cpe:2.3:a:cisco:webex_meetings_server:-:*:*:*:*:*:*:*
cpe:2.3:a:cisco:webex_meetings_server:-:*:*:*:*:*:*:*
cpe:2.3:a:cisco:webex_meetings_server:1.0:*:*:*:*:*:*:*
cpe:2.3:a:cisco:webex_meetings_server:1.0:*:*:*:*:*:*:*
cpe:2.3:a:cisco:webex_meetings_server:1.1:*:*:*:*:*:*:*
cpe:2.3:a:cisco:webex_meetings_server:1.1:*:*:*:*:*:*:*
cpe:2.3:a:cisco:webex_meetings_server:1.5:*:*:*:*:*:*:*
cpe:2.3:a:cisco:webex_meetings_server:1.5:*:*:*:*:*:*:*
cpe:2.3:a:cisco:webex_meetings_server:1.5\(.1.6\):*:*:*:*:*:*:*
cpe:2.3:a:cisco:webex_meetings_server:1.5\(.1.6\):*:*:*:*:*:*:*
cpe:2.3:a:cisco:webex_meetings_server:1.5\(.1.131\):*:*:*:*:*:*:*
cpe:2.3:a:cisco:webex_meetings_server:1.5\(.1.131\):*:*:*:*:*:*:*
cpe:2.3:a:cisco:webex_meetings_server:1.5.1.6:*:*:*:*:*:*:*
cpe:2.3:a:cisco:webex_meetings_server:1.5.1.6:*:*:*:*:*:*:*
cpe:2.3:a:cisco:webex_meetings_server:1.5.1.131:*:*:*:*:*:*:*
cpe:2.3:a:cisco:webex_meetings_server:1.5.1.131:*:*:*:*:*:*:*
cpe:2.3:a:cisco:webex_meetings_server:1.1_base:*:*:*:*:*:*:*
cpe:2.3:a:cisco:webex_meetings_server:1.1_base:*:*:*:*:*:*:*
cpe:2.3:a:cisco:webex_meetings_server:1.5_base:*:*:*:*:*:*:*
cpe:2.3:a:cisco:webex_meetings_server:1.5_base:*:*:*:*:*:*:*
cpe:2.3:a:cisco:webex_meetings_server:2.0:*:*:*:*:*:*:*
cpe:2.3:a:cisco:webex_meetings_server:2.0:*:*:*:*:*:*:*
cpe:2.3:a:cisco:webex_meetings_server:2.0_mr2:*:*:*:*:*:*:*
cpe:2.3:a:cisco:webex_meetings_server:2.0_mr2:*:*:*:*:*:*:*
cpe:2.3:a:cisco:webex_meetings_server:2.0_mr3:*:*:*:*:*:*:*
cpe:2.3:a:cisco:webex_meetings_server:2.0_mr3:*:*:*:*:*:*:*
cpe:2.3:a:cisco:webex_meetings_server:2.0_mr4:*:*:*:*:*:*:*
cpe:2.3:a:cisco:webex_meetings_server:2.0_mr4:*:*:*:*:*:*:*
cpe:2.3:a:cisco:webex_meetings_server:2.0_mr5:*:*:*:*:*:*:*
cpe:2.3:a:cisco:webex_meetings_server:2.0_mr5:*:*:*:*:*:*:*
cpe:2.3:a:cisco:webex_meetings_server:2.0_mr6:*:*:*:*:*:*:*
cpe:2.3:a:cisco:webex_meetings_server:2.0_mr6:*:*:*:*:*:*:*
cpe:2.3:a:cisco:webex_meetings_server:2.0_mr7:*:*:*:*:*:*:*
cpe:2.3:a:cisco:webex_meetings_server:2.0_mr7:*:*:*:*:*:*:*
cpe:2.3:a:cisco:webex_meetings_server:2.0_mr8:*:*:*:*:*:*:*
cpe:2.3:a:cisco:webex_meetings_server:2.0_mr8:*:*:*:*:*:*:*
cpe:2.3:a:cisco:webex_meetings_server:2.0_mr9:*:*:*:*:*:*:*
cpe:2.3:a:cisco:webex_meetings_server:2.0_mr9:*:*:*:*:*:*:*
cpe:2.3:a:cisco:webex_meetings_server:2.0.1.107:*:*:*:*:*:*:*
cpe:2.3:a:cisco:webex_meetings_server:2.0.1.107:*:*:*:*:*:*:*
cpe:2.3:a:cisco:webex_meetings_server:2.5:*:*:*:*:*:*:*
cpe:2.3:a:cisco:webex_meetings_server:2.5:*:*:*:*:*:*:*
cpe:2.3:a:cisco:webex_meetings_server:2.5_mr1:*:*:*:*:*:*:*
cpe:2.3:a:cisco:webex_meetings_server:2.5_mr1:*:*:*:*:*:*:*
cpe:2.3:a:cisco:webex_meetings_server:2.5_mr2:*:*:*:*:*:*:*
cpe:2.3:a:cisco:webex_meetings_server:2.5_mr2:*:*:*:*:*:*:*
cpe:2.3:a:cisco:webex_meetings_server:2.5_mr3:*:*:*:*:*:*:*
cpe:2.3:a:cisco:webex_meetings_server:2.5_mr3:*:*:*:*:*:*:*
cpe:2.3:a:cisco:webex_meetings_server:2.5_mr4:*:*:*:*:*:*:*
cpe:2.3:a:cisco:webex_meetings_server:2.5_mr4:*:*:*:*:*:*:*
cpe:2.3:a:cisco:webex_meetings_server:2.5_mr5:*:*:*:*:*:*:*
cpe:2.3:a:cisco:webex_meetings_server:2.5_mr5:*:*:*:*:*:*:*
cpe:2.3:a:cisco:webex_meetings_server:2.5_mr6:*:*:*:*:*:*:*
cpe:2.3:a:cisco:webex_meetings_server:2.5_mr6:*:*:*:*:*:*:*
cpe:2.3:a:cisco:webex_meetings_server:2.5.0.997:*:*:*:*:*:*:*
cpe:2.3:a:cisco:webex_meetings_server:2.5.0.997:*:*:*:*:*:*:*
cpe:2.3:a:cisco:webex_meetings_server:2.5\(1\):*:*:*:*:*:*:*
cpe:2.3:a:cisco:webex_meetings_server:2.5\(1\):*:*:*:*:*:*:*
cpe:2.3:a:cisco:webex_meetings_server:2.5.1.5:*:*:*:*:*:*:*
cpe:2.3:a:cisco:webex_meetings_server:2.5.1.5:*:*:*:*:*:*:*
cpe:2.3:a:cisco:webex_meetings_server:2.5.1.29:*:*:*:*:*:*:*
cpe:2.3:a:cisco:webex_meetings_server:2.5.1.29:*:*:*:*:*:*:*
cpe:2.3:a:cisco:webex_meetings_server:2.6:*:*:*:*:*:*:*
cpe:2.3:a:cisco:webex_meetings_server:2.6:*:*:*:*:*:*:*
cpe:2.3:a:cisco:webex_meetings_server:2.6.0:*:*:*:*:*:*:*
cpe:2.3:a:cisco:webex_meetings_server:2.6.0:*:*:*:*:*:*:*
cpe:2.3:a:cisco:webex_meetings_server:2.6.0.8:*:*:*:*:*:*:*
cpe:2.3:a:cisco:webex_meetings_server:2.6.0.8:*:*:*:*:*:*:*
cpe:2.3:a:cisco:webex_meetings_server:2.6_mr1:*:*:*:*:*:*:*
cpe:2.3:a:cisco:webex_meetings_server:2.6_mr1:*:*:*:*:*:*:*
cpe:2.3:a:cisco:webex_meetings_server:2.6_mr2:*:*:*:*:*:*:*
cpe:2.3:a:cisco:webex_meetings_server:2.6_mr2:*:*:*:*:*:*:*
cpe:2.3:a:cisco:webex_meetings_server:2.6_mr3:*:*:*:*:*:*:*
cpe:2.3:a:cisco:webex_meetings_server:2.6_mr3:*:*:*:*:*:*:*
cpe:2.3:a:cisco:webex_meetings_server:2.6.1.39:*:*:*:*:*:*:*
cpe:2.3:a:cisco:webex_meetings_server:2.6.1.39:*:*:*:*:*:*:*
cpe:2.3:a:cisco:webex_meetings_server:2.6:maintenance_release3_patch2:*:*:*:*:*:*
cpe:2.3:a:cisco:webex_meetings_server:2.6:maintenance_release3_patch2:*:*:*:*:*:*
cpe:2.3:a:cisco:webex_meetings_server:2.7:*:*:*:*:*:*:*
cpe:2.3:a:cisco:webex_meetings_server:2.7:*:*:*:*:*:*:*
cpe:2.3:a:cisco:webex_meetings_server:2.7.0:*:*:*:*:*:*:*
cpe:2.3:a:cisco:webex_meetings_server:2.7.0:*:*:*:*:*:*:*
cpe:2.3:a:cisco:webex_meetings_server:2.7_mr1:*:*:*:*:*:*:*
cpe:2.3:a:cisco:webex_meetings_server:2.7_mr1:*:*:*:*:*:*:*
cpe:2.3:a:cisco:webex_meetings_server:2.7_mr2:*:*:*:*:*:*:*
cpe:2.3:a:cisco:webex_meetings_server:2.7_mr2:*:*:*:*:*:*:*
cpe:2.3:a:cisco:webex_meetings_server:2.7.1:*:*:*:*:*:*:*
cpe:2.3:a:cisco:webex_meetings_server:2.7.1:*:*:*:*:*:*:*
cpe:2.3:a:cisco:webex_meetings_server:2.8:*:*:*:*:*:*:*
cpe:2.3:a:cisco:webex_meetings_server:2.8:*:*:*:*:*:*:*
cpe:2.3:a:cisco:webex_meetings_server:2.8\(1\):*:*:*:*:*:*:*
cpe:2.3:a:cisco:webex_meetings_server:2.8\(1\):*:*:*:*:*:*:*
cpe:2.3:a:cisco:webex_meetings_server:2.8.1.17:*:*:*:*:*:*:*
cpe:2.3:a:cisco:webex_meetings_server:2.8.1.17:*:*:*:*:*:*:*
cpe:2.3:a:cisco:webex_meetings_server:2.8.1.1023:*:*:*:*:*:*:*
cpe:2.3:a:cisco:webex_meetings_server:2.8.1.1023:*:*:*:*:*:*:*
cpe:2.3:a:cisco:webex_meetings_server:2.8:mr1:*:*:*:*:*:*
cpe:2.3:a:cisco:webex_meetings_server:2.8:mr1:*:*:*:*:*:*
cpe:2.3:a:cisco:webex_meetings_server:2.8:mr2:*:*:*:*:*:*
cpe:2.3:a:cisco:webex_meetings_server:2.8:mr2:*:*:*:*:*:*
cpe:2.3:a:cisco:webex_meetings_server:2.8:base:*:*:*:*:*:*
cpe:2.3:a:cisco:webex_meetings_server:2.8:base:*:*:*:*:*:*
cpe:2.3:a:cisco:webex_meetings_server:2.8:maintenance_release3:*:*:*:*:*:*
cpe:2.3:a:cisco:webex_meetings_server:2.8:maintenance_release3:*:*:*:*:*:*
cpe:2.3:a:cisco:webex_meetings_server:2.0_base:*:*:*:*:*:*:*
cpe:2.3:a:cisco:webex_meetings_server:2.0_base:*:*:*:*:*:*:*
cpe:2.3:a:cisco:webex_meetings_server:2.0_mr8:p1:*:*:*:*:*:*
cpe:2.3:a:cisco:webex_meetings_server:2.0_mr8:p1:*:*:*:*:*:*
cpe:2.3:a:cisco:webex_meetings_server:2.0_mr9:p1:*:*:*:*:*:*
cpe:2.3:a:cisco:webex_meetings_server:2.0_mr9:p1:*:*:*:*:*:*
cpe:2.3:a:cisco:webex_meetings_server:2.0_mr9:p2:*:*:*:*:*:*
cpe:2.3:a:cisco:webex_meetings_server:2.0_mr9:p2:*:*:*:*:*:*
cpe:2.3:a:cisco:webex_meetings_server:2.0_mr9:p3:*:*:*:*:*:*
cpe:2.3:a:cisco:webex_meetings_server:2.0_mr9:p3:*:*:*:*:*:*
cpe:2.3:a:cisco:webex_meetings_server:2.5_base:*:*:*:*:*:*:*
cpe:2.3:a:cisco:webex_meetings_server:2.5_base:*:*:*:*:*:*:*
cpe:2.3:a:cisco:webex_meetings_server:2.5_mr2:p1:*:*:*:*:*:*
cpe:2.3:a:cisco:webex_meetings_server:2.5_mr2:p1:*:*:*:*:*:*
cpe:2.3:a:cisco:webex_meetings_server:2.5_mr5:p1:*:*:*:*:*:*
cpe:2.3:a:cisco:webex_meetings_server:2.5_mr5:p1:*:*:*:*:*:*
cpe:2.3:a:cisco:webex_meetings_server:2.5_mr6:p1:*:*:*:*:*:*
cpe:2.3:a:cisco:webex_meetings_server:2.5_mr6:p1:*:*:*:*:*:*
cpe:2.3:a:cisco:webex_meetings_server:2.5_mr6:p2:*:*:*:*:*:*
cpe:2.3:a:cisco:webex_meetings_server:2.5_mr6:p2:*:*:*:*:*:*
cpe:2.3:a:cisco:webex_meetings_server:2.5_mr6:p3:*:*:*:*:*:*
cpe:2.3:a:cisco:webex_meetings_server:2.5_mr6:p3:*:*:*:*:*:*
cpe:2.3:a:cisco:webex_meetings_server:2.5_mr6:patch_4:*:*:*:*:*:*
cpe:2.3:a:cisco:webex_meetings_server:2.5_mr6:patch_4:*:*:*:*:*:*
cpe:2.3:a:cisco:webex_meetings_server:2.6_base:*:*:*:*:*:*:*
cpe:2.3:a:cisco:webex_meetings_server:2.6_base:*:*:*:*:*:*:*
cpe:2.3:a:cisco:webex_meetings_server:2.6_mr1:p1:*:*:*:*:*:*
cpe:2.3:a:cisco:webex_meetings_server:2.6_mr1:p1:*:*:*:*:*:*
cpe:2.3:a:cisco:webex_meetings_server:2.6_mr2:p1:*:*:*:*:*:*
cpe:2.3:a:cisco:webex_meetings_server:2.6_mr2:p1:*:*:*:*:*:*
cpe:2.3:a:cisco:webex_meetings_server:2.6_mr3:p1:*:*:*:*:*:*
cpe:2.3:a:cisco:webex_meetings_server:2.6_mr3:p1:*:*:*:*:*:*
cpe:2.3:a:cisco:webex_meetings_server:2.7_base:*:*:*:*:*:*:*
cpe:2.3:a:cisco:webex_meetings_server:2.7_base:*:*:*:*:*:*:*
cpe:2.3:a:cisco:webex_meetings_server:2.7_mr1:p1:*:*:*:*:*:*
cpe:2.3:a:cisco:webex_meetings_server:2.7_mr1:p1:*:*:*:*:*:*
cpe:2.3:a:cisco:webex_meetings_server:2.7_mr2:patch_1:*:*:*:*:*:*
cpe:2.3:a:cisco:webex_meetings_server:2.7_mr2:patch_1:*:*:*:*:*:*
cpe:2.3:a:cisco:webex_meetings_server:3.0:-:*:*:*:*:*:*
cpe:2.3:a:cisco:webex_meetings_server:3.0:-:*:*:*:*:*:*
cpe:2.3:a:cisco:webex_meetings_server:3.0:maintenance_release2:*:*:*:*:*:*
cpe:2.3:a:cisco:webex_meetings_server:3.0:maintenance_release2:*:*:*:*:*:*
cpe:2.3:a:cisco:webex_meetings_server:3.0:maintenance_release3:*:*:*:*:*:*
cpe:2.3:a:cisco:webex_meetings_server:3.0:maintenance_release3:*:*:*:*:*:*
cpe:2.3:a:cisco:webex_meetings_server:4.0:-:*:*:*:*:*:*
cpe:2.3:a:cisco:webex_meetings_server:4.0:-:*:*:*:*:*:*
cpe:2.3:a:cisco:webex_meetings_server:4.0:maintenance_release1:*:*:*:*:*:*
cpe:2.3:a:cisco:webex_meetings_server:4.0:maintenance_release1:*:*:*:*:*:*
cpe:2.3:a:cisco:webex_meetings_server:4.0:maintenance_release2:*:*:*:*:*:*
cpe:2.3:a:cisco:webex_meetings_server:4.0:maintenance_release2:*:*:*:*:*:*

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CVE-2020-3419 Vulnerability Scoring