A critical vulnerability has been discovered in the widely used Transmission BitTorrent app that could allow hackers to remotely execute malicious code on BitTorrent users’ computers and take control of them.
The vulnerability has been uncovered by Google’s Project Zero vulnerability reporting team, and one of its researchers Tavis Ormandy has also posted a proof-of-concept attack—just 40 days after the initial report.
Usually, Project Zero team discloses vulnerabilities either after 90 days of reporting them to the affected vendors or until the vendor has released a patch.
However, in this case, the Project Zero researchers disclosed the vulnerability 50 days prior to the actual time limit because Transmission developers failed to apply a ready-made patch provided by the researchers over a month ago.
“I’m finding it frustrating that the transmission developers are not responding on their private security list, I suggested moving this into the open so that distributions can apply the patch independently. I suspect they won’t reply, but let’s see,” Ormandy said in a public report published Tuesday.
Proof-of-Concept Exploit Made Publicly Available
The PoC attack published by Ormandy exploits a specific Transmission function that lets users control the BitTorrent app with their web browser.
Ormandy confirmed his exploit works on Chrome and Firefox on Windows and Linux (Fedora and Ubuntu) and believes that other browsers and platforms are also vulnerable to the attack.
Transmission BitTorrent app works on server-client architecture, where users have to install a daemon service on their systems in order to access a web-based interface on their browsers locally.
The daemon installed on the user system then interacts with the server for downloading and uploading files through the browser using JSON RPC requests.
Ormandy found that a hacking technique called the “domain name system rebinding” attack could successfully exploit this implementation, allowing any malicious website that user visits to execute malicious code on user’s computer remotely with the help of installed daemon service.
Here’s How the Attack Works:
The loophole resides in the fact that services installed on localhost can be manipulated to interact with third-party websites.
“I regularly encounter users who do not accept that websites can access services on localhost or their intranet,” Ormandy wrote in a separate post, which includes the patch.
“These users understand that services bound to localhost are only accessible to software running on the local machine and that their browser is running on the local machine—but somehow believe that accessing a website “transfers” execution somewhere else. It does not work like that, but this is a common source of confusion.”
Attackers can exploit this loophole by simply creating a DNS name they’re authorized to communicate with and then making it resolve to the vulnerable computer’s localhost name. Here’s how the attack works:
A user visits malicious site (http://attacker.com), which has an iframe to a subdomain controlled by the attacker.
The attacker configures their DNS server to respond alternately with 127.0.0.1 and 123.123.123.123 (an address controlled by the attacker) with a very low TTL.
When the browser resolves to 123.123.123.123, it serves HTML that waits for the DNS entry to expire (or force it to terminate by flooding the cache with lookups), then it has permission to read and set headers.
Ormandy said the vulnerability (CVE-2018-5702) was the “first of a few remote code execution flaws in various popular torrent clients,” though he did not name the other torrent apps due to the 90-day disclosure timeline.
A fix is expected to be released as soon as possible, a development official with Transmission told ArsTechnica, without specifying an actual date.
——————————————————————–
From : The Hacker News / January 15, 2018
Link : https://thehackernews.com/2018/01/bittorent-transmission-hacking.html
This mode enables people with epilepsy to use the website safely by eliminating the risk of seizures that result from flashing or blinking animations and risky color combinations.
Visually Impaired Mode
Improves website's visuals
This mode adjusts the website for the convenience of users with visual impairments such as Degrading Eyesight, Tunnel Vision, Cataract, Glaucoma, and others.
Cognitive Disability Mode
Helps to focus on specific content
This mode provides different assistive options to help users with cognitive impairments such as Dyslexia, Autism, CVA, and others, to focus on the essential elements of the website more easily.
ADHD Friendly Mode
Reduces distractions and improve focus
This mode helps users with ADHD and Neurodevelopmental disorders to read, browse, and focus on the main website elements more easily while significantly reducing distractions.
Blindness Mode
Allows using the site with your screen-reader
This mode configures the website to be compatible with screen-readers such as JAWS, NVDA, VoiceOver, and TalkBack. A screen-reader is software for blind users that is installed on a computer and smartphone, and websites must be compatible with it.
Online Dictionary
Readable Experience
Content Scaling
Default
Text Magnifier
Readable Font
Dyslexia Friendly
Highlight Titles
Highlight Links
Font Sizing
Default
Line Height
Default
Letter Spacing
Default
Left Aligned
Center Aligned
Right Aligned
Visually Pleasing Experience
Dark Contrast
Light Contrast
Monochrome
High Contrast
High Saturation
Low Saturation
Adjust Text Colors
Adjust Title Colors
Adjust Background Colors
Easy Orientation
Mute Sounds
Hide Images
Hide Emoji
Reading Guide
Stop Animations
Reading Mask
Highlight Hover
Highlight Focus
Big Dark Cursor
Big Light Cursor
Cognitive Reading
Virtual Keyboard
Navigation Keys
Voice Navigation
Accessibility Statement
www.secnia.go.th
22 June 2025
Compliance status
We firmly believe that the internet should be available and accessible to anyone, and are committed to providing a website that is accessible to the widest possible audience,
regardless of circumstance and ability.
To fulfill this, we aim to adhere as strictly as possible to the World Wide Web Consortium’s (W3C) Web Content Accessibility Guidelines 2.1 (WCAG 2.1) at the AA level.
These guidelines explain how to make web content accessible to people with a wide array of disabilities. Complying with those guidelines helps us ensure that the website is accessible
to all people: blind people, people with motor impairments, visual impairment, cognitive disabilities, and more.
This website utilizes various technologies that are meant to make it as accessible as possible at all times. We utilize an accessibility interface that allows persons with specific
disabilities to adjust the website’s UI (user interface) and design it to their personal needs.
Additionally, the website utilizes an AI-based application that runs in the background and optimizes its accessibility level constantly. This application remediates the website’s HTML,
adapts Its functionality and behavior for screen-readers used by the blind users, and for keyboard functions used by individuals with motor impairments.
If you’ve found a malfunction or have ideas for improvement, we’ll be happy to hear from you. You can reach out to the website’s operators by using the following email
Screen-reader and keyboard navigation
Our website implements the ARIA attributes (Accessible Rich Internet Applications) technique, alongside various different behavioral changes, to ensure blind users visiting with
screen-readers are able to read, comprehend, and enjoy the website’s functions. As soon as a user with a screen-reader enters your site, they immediately receive
a prompt to enter the Screen-Reader Profile so they can browse and operate your site effectively. Here’s how our website covers some of the most important screen-reader requirements,
alongside console screenshots of code examples:
Screen-reader optimization: we run a background process that learns the website’s components from top to bottom, to ensure ongoing compliance even when updating the website.
In this process, we provide screen-readers with meaningful data using the ARIA set of attributes. For example, we provide accurate form labels;
descriptions for actionable icons (social media icons, search icons, cart icons, etc.); validation guidance for form inputs; element roles such as buttons, menus, modal dialogues (popups),
and others. Additionally, the background process scans all the website’s images and provides an accurate and meaningful image-object-recognition-based description as an ALT (alternate text) tag
for images that are not described. It will also extract texts that are embedded within the image, using an OCR (optical character recognition) technology.
To turn on screen-reader adjustments at any time, users need only to press the Alt+1 keyboard combination. Screen-reader users also get automatic announcements to turn the Screen-reader mode on
as soon as they enter the website.
These adjustments are compatible with all popular screen readers, including JAWS and NVDA.
Keyboard navigation optimization: The background process also adjusts the website’s HTML, and adds various behaviors using JavaScript code to make the website operable by the keyboard. This includes the ability to navigate the website using the Tab and Shift+Tab keys, operate dropdowns with the arrow keys, close them with Esc, trigger buttons and links using the Enter key, navigate between radio and checkbox elements using the arrow keys, and fill them in with the Spacebar or Enter key.Additionally, keyboard users will find quick-navigation and content-skip menus, available at any time by clicking Alt+1, or as the first elements of the site while navigating with the keyboard. The background process also handles triggered popups by moving the keyboard focus towards them as soon as they appear, and not allow the focus drift outside it.
Users can also use shortcuts such as “M” (menus), “H” (headings), “F” (forms), “B” (buttons), and “G” (graphics) to jump to specific elements.
Disability profiles supported in our website
Epilepsy Safe Mode: this profile enables people with epilepsy to use the website safely by eliminating the risk of seizures that result from flashing or blinking animations and risky color combinations.
Visually Impaired Mode: this mode adjusts the website for the convenience of users with visual impairments such as Degrading Eyesight, Tunnel Vision, Cataract, Glaucoma, and others.
Cognitive Disability Mode: this mode provides different assistive options to help users with cognitive impairments such as Dyslexia, Autism, CVA, and others, to focus on the essential elements of the website more easily.
ADHD Friendly Mode: this mode helps users with ADHD and Neurodevelopmental disorders to read, browse, and focus on the main website elements more easily while significantly reducing distractions.
Blindness Mode: this mode configures the website to be compatible with screen-readers such as JAWS, NVDA, VoiceOver, and TalkBack. A screen-reader is software for blind users that is installed on a computer and smartphone, and websites must be compatible with it.
Keyboard Navigation Profile (Motor-Impaired): this profile enables motor-impaired persons to operate the website using the keyboard Tab, Shift+Tab, and the Enter keys. Users can also use shortcuts such as “M” (menus), “H” (headings), “F” (forms), “B” (buttons), and “G” (graphics) to jump to specific elements.
Additional UI, design, and readability adjustments
Font adjustments – users, can increase and decrease its size, change its family (type), adjust the spacing, alignment, line height, and more.
Color adjustments – users can select various color contrast profiles such as light, dark, inverted, and monochrome. Additionally, users can swap color schemes of titles, texts, and backgrounds, with over seven different coloring options.
Animations – person with epilepsy can stop all running animations with the click of a button. Animations controlled by the interface include videos, GIFs, and CSS flashing transitions.
Content highlighting – users can choose to emphasize important elements such as links and titles. They can also choose to highlight focused or hovered elements only.
Audio muting – users with hearing devices may experience headaches or other issues due to automatic audio playing. This option lets users mute the entire website instantly.
Cognitive disorders – we utilize a search engine that is linked to Wikipedia and Wiktionary, allowing people with cognitive disorders to decipher meanings of phrases, initials, slang, and others.
Additional functions – we provide users the option to change cursor color and size, use a printing mode, enable a virtual keyboard, and many other functions.
Browser and assistive technology compatibility
We aim to support the widest array of browsers and assistive technologies as possible, so our users can choose the best fitting tools for them, with as few limitations as possible. Therefore, we have worked very hard to be able to support all major systems that comprise over 95% of the user market share including Google Chrome, Mozilla Firefox, Apple Safari, Opera and Microsoft Edge, JAWS and NVDA (screen readers).
Notes, comments, and feedback
Despite our very best efforts to allow anybody to adjust the website to their needs. There may still be pages or sections that are not fully accessible, are in the process of becoming accessible, or are lacking an adequate technological solution to make them accessible. Still, we are continually improving our accessibility, adding, updating and improving its options and features, and developing and adopting new technologies. All this is meant to reach the optimal level of accessibility, following technological advancements. For any assistance, please reach out to
