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Okta Releases Security Updates for Access Gateway

Security update addresses the OpenSSL remote code execution and denial-of-service vulnerabilities

Threat ID:
CC-4206
Threat Severity:
Information only
Published:
7 November 2022 11:59 AM
Report a cyber attack: call 0300 303 5222 or email [email protected]

Summary

Security update addresses the OpenSSL remote code execution and denial-of-service vulnerabilities

Affected platforms

The following platforms are known to be affected:

Versions: 2022.10.0

Okta Access Gateway

Threat details

Introduction

Okta has released a security update to address OpenSSL remote code execution (RCE) and denial-of-service (DoS) vulnerabilities. A remote, unauthenticated attacker could exploit this command injection vulnerability by sending a specially crafted URL and take control of an affected system.

Remediation advice

Affected organisations should read Okta's security advisory and update to Access Gateway version 2022.11.0

CVE Vulnerabilities

Status Published

CVE-2022-3602

A buffer overrun can be triggered in X.509 certificate verification, specifically in name constraint checking. Note that this occurs after certificate chain signature verification and requires either a CA to have signed the malicious certificate or for the application to continue certificate verification despite failure to construct a path to a trusted issuer. An attacker can craft a malicious email address to overflow four attacker-controlled bytes on the stack. This buffer overflow could result in a crash (causing a denial of service) or potentially remote code execution. Many platforms implement stack overflow protections which would mitigate against the risk of remote code execution. The risk may be further mitigated based on stack layout for any given platform/compiler. Pre-announcements of CVE-2022-3602 described this issue as CRITICAL. Further analysis based on some of the mitigating factors described above have led this to be downgraded to HIGH. Users are still encouraged to upgrade to a new version as soon as possible. In a TLS client, this can be triggered by connecting to a malicious server. In a TLS server, this can be triggered if the server requests client authentication and a malicious client connects. Fixed in OpenSSL 3.0.7 (Affected 3.0.0,3.0.1,3.0.2,3.0.3,3.0.4,3.0.5,3.0.6).
Status Published

CVE-2022-3786

A buffer overrun can be triggered in X.509 certificate verification, specifically in name constraint checking. Note that this occurs after certificate chain signature verification and requires either a CA to have signed a malicious certificate or for an application to continue certificate verification despite failure to construct a path to a trusted issuer. An attacker can craft a malicious email address in a certificate to overflow an arbitrary number of bytes containing the `.' character (decimal 46) on the stack. This buffer overflow could result in a crash (causing a denial of service). In a TLS client, this can be triggered by connecting to a malicious server. In a TLS server, this can be triggered if the server requests client authentication and a malicious client connects.

Last edited: 7 November 2022 11:59 am