CVE-2021-27258 is a critical privilege escalation vulnerability affecting the SolarWinds Orion Platform version 2020.2. This vulnerability allows remote attackers to execute escalate privileges on affected installations. Authentication is not required to exploit this vulnerability, which significantly increases the risk for organizations.
The specific flaw exists within the SaveUserSetting endpoint, resulting from improper restriction of this endpoint to unprivileged users. An attacker can leverage this vulnerability to escalate their privileges from Guest to Administrator. Given the nature of this vulnerability, it poses a critical risk to affected organizations.
The CVSS score for this vulnerability is 9.8, indicating its critical severity. Organizations should prioritize patching immediately to mitigate the potential impact of this vulnerability.
The vulnerability was published on April 14, 2021, and has been classified as a critical issue by the vendor. Organizations using the affected version should assess their exposure and apply the necessary patches as soon as possible.
Vulnerability Details
According to the official CVE description, this vulnerability allows remote attackers to execute privileges escalation on affected installations of the SolarWinds Orion Platform 2020.2. The vulnerability exists due to improper restrictions on the SaveUserSetting endpoint.
The CVSS score for CVE-2021-27258 is 9.8, with a base severity classification of critical. The attack vector is network-based, and the complexity is low, meaning that an attacker can exploit the vulnerability remotely without the need for any authentication.
The vulnerability impacts the following product: SolarWinds Orion Platform version 2020.2 and all prior versions that have not received the relevant patches.
The last modification date for this vulnerability record is November 21, 2024. Organizations must stay vigilant as updates and remediation strategies evolve.
Technical Analysis
The root cause of CVE-2021-27258 is the improper restriction of the SaveUserSetting endpoint. This flaw allows an attacker to exploit the endpoint without any privileges, leading to privilege escalation.
Exploitation occurs over the network, with a low attack complexity, meaning that the attacker does not need to have advanced skills or access to the system to exploit this vulnerability. No user interaction is required, which makes this vulnerability particularly dangerous.
The impact on confidentiality, integrity, and availability is high. An attacker successfully exploiting this vulnerability could gain administrator-level access, compromising sensitive data and potentially leading to a full system takeover.
Risk & Impact Analysis
Risk to organizations includes the potential for unauthorized access to sensitive systems and data, which can lead to severe operational disruptions and data breaches. The ability to escalate privileges to an administrator level allows attackers to manipulate system settings, access confidential information, and disrupt services.
The urgency for remediation is critical. Organizations should prioritize patching immediately to prevent potential exploitation. Given the high CVSS score, the impact can be extensive, affecting not only the compromised system but potentially the entire network if exploited.
Organizations should also review their security policies and access controls to ensure that similar vulnerabilities do not exist in other systems.
Exploitation Status
Signal | Status |
|---|---|
Known Exploit | No |
Public PoC | No |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
The affected product is the SolarWinds Orion Platform version 2020.2. Organizations should note that all versions prior to vendor patch are vulnerable to this exploit.
Mitigation & Remediation
Organizations should prioritize patching immediately by upgrading to the latest version of the SolarWinds Orion Platform. If a patch is unavailable, consider implementing workarounds such as restricting access to the SaveUserSetting endpoint.
Configuration hardening is also recommended, which includes implementing stricter access controls and monitoring for unusual access patterns to the affected systems.
Organizations can validate remediation through penetration testing to ensure that the vulnerabilities have been effectively addressed.
Detection Guidance
To detect potential exploitation of this vulnerability, organizations should monitor logs for unusual activity related to the SaveUserSetting endpoint. Look for unauthorized changes to user privileges and access logs that indicate attempts to exploit this vulnerability.
Behavioral anomalies, such as unexpected privilege changes, should be flagged for review. Implementing network signatures that detect abnormal access patterns can also help identify potential exploit attempts.
AppSecure Threat Intelligence Insight
The long-term significance of CVE-2021-27258 is profound, as it highlights the need for robust access controls on sensitive endpoints. Security teams should recognize the patterns of privilege escalation risks that this vulnerability represents.
Organizations should take lessons from this vulnerability to enhance their security posture, particularly in terms of endpoint security and privilege management.
Strategically, this vulnerability underscores the importance of regular security assessments and the implementation of comprehensive security measures to detect and mitigate similar vulnerabilities in the future.
Security teams should continually adapt their defenses to the evolving threat landscape, employing resources such as the vulnerability management program to stay ahead of potential exploits.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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