shadowsocks / shadowsocks/shadowsocks-org

Redirect attack on Shadowsocks stream ciphers

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#154 22 comments 3 reactions 0 assignees View on GitHub

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Description

Shadowsocks is a secure split proxy loosely based on SOCKS5. It’s widely used in china.
However, we found a vulnerability in shadowsocks protocol which break the confdentiality of
shadowsocks stream cipher. An attacker can easliy decrypt all the encrypted shadowsocks
packet using our redirect attack. As the vulnerability is obvious and easy to exploit. I think the
government has already know it. So, using shadowsocks in steam cipher cannot hide yourself
from surveillance.

https://github.com/edwardz246003/shadowsocks

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First steps

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  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start by reviewing the vulnerability report and the linked repository at github.com/edwardz246003/shadowsocks. The issue names no project files, tests, or concrete remediation; completion criteria must therefore be established before implementation can begin.

Written by the indexing model from the issue text.

Assessment

Domain
cryptography, networking, security
Issue type
Bug
Difficulty
5/5
Estimated time
Over a week
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
20/100

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