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F-Secure finds 3 instances of Java/Blackhole malware exploit in Processing docs zip file

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#376 1 則留言 0 個 reaction 已指派 0 人 在 GitHub 檢視

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還沒有人認領這個 Issue。

評估

難度
4/5
預估耗時
3-5 天
新手友好度
35/100
Issue 類型
缺陷
描述清晰度
基本清楚
活躍度
停滯
技術堆疊
java

研究方向

從文件典藏中回報的三個路徑開始:exhibition/works/cdrawer/cdrawer.jar、inequality/inequality.jar 和 sodaprocessing/sodaprocessing.jar,重點檢查各自的 BApplet.class。將這些檔案與其原始程式碼進行比較,並在可能的情況下將個別檔案提交給 F-Secure 進行分析。完成的標準是確認這些偵測結果是真實問題還是誤判,然後移除 exploit,或記錄安全的誤判回應。

由索引模型根據 Issue 內容生成。

描述

Issue description

Steps to reproduce: (28 November 2020)
OS Windows 10 Pro, latest version;
Microsoft Edge, latest version.
F-Secure anti-virus, fully up-to-date:

F-SecureVersion

Downloaded zip file of processing/docs (28 November 2020).
Scanned with up-to-date F-Secure anti-virus.
3 instances of the blackhole exploit found:

Virus scan report 1

[2] BApplet.class
Exploit.EXP/Blacole.S.9

Category: Malware
Type: Exploit
Platform: Java

3 specific harmful items found (from the F-Secure report):

Exploit.EXP/Blacole.S.9
processing-docs-master.zip[5754] processing-docs-master/exhibition/works/cdrawer/cdrawer.jar[2] BApplet.class
processing-docs-master.zip[5909] processing-docs-master/exhibition/works/inequality/inequality.jar[2] BApplet.class
processing-docs-master.zip[6063] processing-docs-master/exhibition/works/sodaprocessing/sodaprocessing.jar[2]

FSecureReport

Part of an exploit kit: see also:
https://www.f-secure.com/v-descs/exploit_java_blackhole.shtml

FSecureWebDescriptionBlackHole

F-Secure reported that it was unable to clean the files. I reverted to deleting the zip file.

NotCleaned

URL(s) of affected page(s)

See above note.

Proposed fix

Author to examine original code files, perhaps send individual files to F-Secure for analysis; remove exploit from affected files if the exploit is real, or modify the code to prevent false negative if that's the case, or post notice that such a false negative exists and can be safely ignored.

I would have sent the zip file to F-Secure for analysis myself, but their file-size limit is 30Mb. I'm not opening the zip file myself just in case this is a real issue.

主要語言
MDX
星號
90
分支
122
平均合併
1 小時 20 分鐘
30 天內合併 PR
4

環境準備

我們還沒有檢查這個專案的環境設定檔。先看它的 README,通用步驟見我們的新手貢獻指南。

從這裡開始

  1. 先讀完整個 Issue,再讀專案的貢獻指南。
  2. 在 Issue 下留言說明你要接手 —— 這能避免兩個人做同樣的事。
  3. Fork 儲存庫,在一個分支上完成修改。
  4. 送出 Pull Request,並在描述裡引用這個 Issue 編號。

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