#aws

Ubuntu Security Notice 6626-1 - Quentin Minster discovered that a race condition existed in the KSMBD implementation in the Linux kernel when handling sessions operations. A remote attacker could use this to cause a denial of service or possibly execute arbitrary code. Marek Marczykowski-Górecki discovered that the Xen event channel infrastructure implementation in the Linux kernel contained a race condition. An attacker in a guest VM could possibly use this to cause a denial of service.

It was discovered that the SMB network file sharing protocol implementation in the Linux kernel did not properly handle certain error conditions, leading to a use-after-free vulnerability. Lin Ma discovered that the netfilter subsystem in the Linux kernel did not properly validate network family support while creating a new netfilter table. Various other issues were discovered and addressed.

Ubuntu Security Notice 6625-1 - Marek Marczykowski-Górecki discovered that the Xen event channel infrastructure implementation in the Linux kernel contained a race condition. An attacker in a guest VM could possibly use this to cause a denial of service. Zheng Wang discovered a use-after-free in the Renesas Ethernet AVB driver in the Linux kernel during device removal. A privileged attacker could use this to cause a denial of service.

Ubuntu Security Notice 6624-1 - Marek Marczykowski-Górecki discovered that the Xen event channel infrastructure implementation in the Linux kernel contained a race condition. An attacker in a guest VM could possibly use this to cause a denial of service. Zheng Wang discovered a use-after-free in the Renesas Ethernet AVB driver in the Linux kernel during device removal. A privileged attacker could use this to cause a denial of service.

By Deeba Ahmed CloudFlare Servers Were Hacked on Thanksgiving Day Using Auth Tokens Stolen in Okta Breach. This is a post from HackRead.com Read the original post: Cloudflare Hacked After State Actor Leverages Okta Breach

Cloudflare has revealed that it was the target of a likely nation-state attack in which the threat actor leveraged stolen credentials to gain unauthorized access to its Atlassian server and ultimately access some documentation and a limited amount of source code. The intrusion, which took place between November 14 and 24, 2023, and detected on November 23, was carried out "with the goal of

## Impacted Resources bref/src/Event/Http/Psr7Bridge.php:130-168 ## Description When Bref is used with the Event-Driven Function runtime and the handler is a `RequestHandlerInterface`, then the Lambda event is converted to a PSR7 object. During the conversion process, if the request is a MultiPart, each part is parsed and its content added in the `$files` or `$parsedBody` arrays. To do that, the following method is called with as first argument the result array (`$files` or `$parsedBody`), as second argument the part name, and as third argument the part content: ```php /** * Parse a string key like "files[id_cards][jpg][]" and do $array['files']['id_cards']['jpg'][] = $value */ private static function parseKeyAndInsertValueInArray(array &$array, string $key, mixed $value): void { if (! str_contains($key, '[')) { $array[$key] = $value; return; } $parts = explode('[', $key); // files[id_cards][jpg][] => [ 'files', 'id_cards]', 'jpg]', ']' ] $point...

By Waqas Anonymous Sudan alleges that the cyber attack they conducted has crippled the reservation system and other online assets of the targeted entity. This is a post from HackRead.com Read the original post: Anonymous Sudan Claims DDOS Attacks on UAE’s Flydubai Airline

## Impacted Resources bref/src/Event/Http/HttpResponse.php:61-90 ## Description When Bref is used in combination with an API Gateway with the v2 format, it does not handle multiple values headers. Precisely, if PHP generates a response with two headers having the same key but different values only the latest one is kept. ## Impact If an application relies on multiple headers with the same key being set for security reasons, then Bref would lower the application security. For example, if an application sets multiple `Content-Security-Policy` headers, then Bref would just reflect the latest one. ## PoC 1. Create a new Bref project. 2. Create an `index.php` file with the following content: ```php <?php header("Content-Security-Policy: script-src 'none'", false); header("Content-Security-Policy: img-src 'self'", false); ?> <script>alert(document.domain)</script> <img src="https://bref.sh/favicon-32x32.png"> ``` 3. Use the following `serverless.yml` to deploy the Lambda: ```yaml se...

## Impacted Resources bref/src/Event/Http/Psr7Bridge.php:94-125 ## Description When Bref is used with the Event-Driven Function runtime and the handler is a `RequestHandlerInterface`, then the Lambda event is converted to a PSR7 object. During the conversion process, if the request is a MultiPart, each part is parsed and for each which contains a file, it is extracted and saved in `/tmp` with a random filename starting with `bref_upload_`. The function implementing the logic follows: ```php private static function parseBodyAndUploadedFiles(HttpRequestEvent $event): array { $bodyString = $event->getBody(); $files = []; $parsedBody = null; $contentType = $event->getContentType(); if ($contentType !== null && $event->getMethod() === 'POST') { if (str_starts_with($contentType, 'application/x-www-form-urlencoded')) { parse_str($bodyString, $parsedBody); } else { $document = new Part("Content-type: $contentType\r\n\r\n" . $body...