Shiyubanzhou

Name of the Vulnerable Software and Affected Versions: @octokit/endpoint versions 4.1.0 through 10.1.3 Description: The issue is a regular expression denial-of-service (ReDoS) attack that can be triggered by crafting specific `options` parameters, causing the program to hang and resulting in high CPU utilization. This occurs in the `parse` function within the `parse.ts` file of the npm package `@octokit/endpoint`. The regular expression `/[w-]+(?=-preview)/g` encounters a backtracking issue when processing a large number of characters followed by the `-` symbol. Recommendations: For versions 4.1.0 through 10.1.3, update the regular expression to `(?<![w-])[w-]+(?=-preview)` to prevent excessive backtracking. Replace the existing regular expression in the `parse.ts` file with the updated one and thoroughly test the application to ensure the functionality remains correct and the performance improves. Once the solution is verified, deploy the fix to the production environment to protect against potential attacks.

Name of the Vulnerable Software and Affected Versions: @octokit/plugin-paginate-rest versions 1.0.0 through 11.4.1 Description: The issue is a Regular Expression Denial of Service (ReDoS) vulnerability that can be triggered when calling `octokit.paginate.iterator()` with a specially crafted `octokit` instance, particularly with a malicious `link` parameter in the `headers` section of the `request`. This can cause high CPU utilization and even service slowdowns or freezes when processing specially crafted `Link` headers. The vulnerability occurs due to excessive backtracking in the regex pattern `/<([^>]+)>;s*rel="next"/`. Recommendations: For versions prior to 11.4.1, update to version 11.4.1 to resolve the issue. As a temporary workaround, consider restricting the use of the `octokit.paginate.iterator()` function until a patch is available. Avoid using the `link` parameter in the `headers` section of the `request` until the issue is resolved.

Name of the Vulnerable Software and Affected Versions: @octokit/request-error versions 1.0.0 through 6.1.6 Description: A Regular Expression Denial of Service (ReDoS) vulnerability exists in the processing of HTTP request headers. By sending an authorization header containing an excessively long sequence of spaces followed by a newline and "@", an attacker can exploit inefficient regular expression processing, leading to excessive resource consumption. This can significantly degrade server performance or cause a denial-of-service (DoS) condition, impacting availability. Recommendations: For @octokit/request-error versions 1.0.0 through 6.1.6, update to version 6.1.7 to resolve the issue. As a temporary workaround, consider restricting the length of the `authorization` header to prevent excessive resource consumption. Avoid using the `authorization` header with long sequences of spaces followed by a newline and "@" until the issue is resolved.

Name of the Vulnerable Software and Affected Versions: @octokit/request versions 1.0.0 through 9.2.1 Description: The regular expression `/<([^>]+)>; rel="deprecation"/` used to match the `link` header in HTTP responses is vulnerable to a ReDoS (Regular Expression Denial of Service) attack. This vulnerability arises due to the unbounded nature of the regex's matching behavior, which can lead to catastrophic backtracking when processing specially crafted input. An attacker could exploit this flaw by sending a malicious `link` header, resulting in excessive CPU usage and potentially causing the server to become unresponsive, impacting service availability. Recommendations: For versions 1.0.0 through 9.2.1, update to version 9.2.1 to fix the issue. As a temporary workaround, consider disabling the use of the `link` header in HTTP responses until a patch is available. Restrict access to the vulnerable regular expression to minimize the risk of exploitation. Avoid using the `link` header with specially crafted input in the affected API endpoint until the issue is resolved.