CVE-2019-11989 Vulnerability Analysis & Exploit Details

CVE-2019-11989
Vulnerability Scoring

5.9
/10
Significant Risk

Security assessments indicate that CVE-2019-11989 presents a notable risk, potentially requiring prompt mitigation.

Attack Complexity Details

  • Attack Complexity: High
    Exploits require significant effort and 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-2019-11989 Details

Status: Modified

Last updated: 🕓 21 Nov 2024, 04:22 UTC
Originally published on: 🕙 19 Jul 2019, 22:15 UTC

Time between publication and last update: 1951 days

CVSS Release: version 3

CVSS3 Source

nvd@nist.gov

CVSS3 Type

Primary

CVSS3 Vector

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

CVE-2019-11989 Vulnerability Summary

CVE-2019-11989: A security vulnerability in HPE IceWall SSO Agent Option and IceWall MFA (Agent module ) could be exploited remotely to cause a denial of service. The versions and platforms of Agent Option modules that are impacted are as follows: 10.0 for Apache 2.2 on RHEL 5 and 6, 10.0 for Apache 2.4 on RHEL 7, 10.0 for Apache 2.4 on HP-UX 11i v3, 10.0 for IIS on Windows, 11.0 for Apache 2.4 on RHEL 7, MFA Proxy 4.0 (Agent module only) for Apache 2.4 on RHEL 7.

Assessing the Risk of CVE-2019-11989

Access Complexity Graph

The exploitability of CVE-2019-11989 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-2019-11989

CVE-2019-11989 presents a challenge to exploit due to its high attack complexity, but the absence of privilege requirements still makes it a viable target for skilled attackers. A thorough security review is advised.

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-2019-11989, 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-2019-11989, showing how Confidentiality, Integrity, and Availability might be affected if the vulnerability is exploited. Higher values usually signal greater potential damage.

  • Confidentiality: None
    CVE-2019-11989 has no significant impact on data confidentiality.
  • Integrity: None
    CVE-2019-11989 poses no threat to data integrity.
  • Availability: High
    CVE-2019-11989 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: 0.096% (probability of exploit)

EPSS Percentile: 42.47% (lower percentile = lower relative risk)
This vulnerability is less risky than approximately 57.53% of others.

CVE-2019-11989 References

External References

CWE Common Weakness Enumeration

NVD-CWE-noinfo

Vulnerable Configurations

  • cpe:2.3:a:hp:icewall_sso_agent:10.0:*:*:*:*:apache:*:*
    cpe:2.3:a:hp:icewall_sso_agent:10.0:*:*:*:*:apache:*:*
  • cpe:2.3:o:hp:hp-ux:-:*:*:*:*:*:*:*
    cpe:2.3:o:hp:hp-ux:-:*:*:*:*:*:*:*
  • cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:*
    cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:*
  • cpe:2.3:o:redhat:enterprise_linux:5.0:*:*:*:*:*:*:*
    cpe:2.3:o:redhat:enterprise_linux:5.0:*:*:*:*:*:*:*
  • cpe:2.3:o:redhat:enterprise_linux:6.0:*:*:*:*:*:*:*
    cpe:2.3:o:redhat:enterprise_linux:6.0:*:*:*:*:*:*:*
  • cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*
    cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*
  • cpe:2.3:a:hp:icewall_sso_agent:11.0:*:*:*:*:apache:*:*
    cpe:2.3:a:hp:icewall_sso_agent:11.0:*:*:*:*:apache:*:*
  • cpe:2.3:a:hp:mfa_proxy:4.0:*:*:*:*:apache:*:*
    cpe:2.3:a:hp:mfa_proxy:4.0:*:*:*:*:apache:*:*

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