angler-fishThe Vulnerability History Project

CVE-2014-1568

An attacker could spoof an RSA signature via the Bleichenbacher's Low-Exponent Attack on the TLS handshake and certificate signature forgery. This is due to the fact that the Network Security Services had a small Abstract Syntax Notation One for decoding.


The main mistake was trusting the ASN.1 which had a Bleichenbacher's Low-Exponent Attack. This is a problem not only this project had but was cross multiple applications. There is only one solution is creating every component, however this is not realisitc. So the best solution is testing all aspects of the library you are using and staying up to date with what information the creator of the library is releasing.
  • Files Patched
  • DEPS
    • Vulnerability-Contributing Commit
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    CVE: CVE-2014-1568
    CWE:
    - 347
    - 310
    bugs:
    - 414124
    repo: 
    vccs:
    - note: The cause of this NSS bug
      commit: 
    fixes:
    - note: Google Commit to update the NSS
      commit: 93c6ad3a8909a8c4ad84634d6efe7698130a79c6
    - note: The NSS fix to this bug
      commit: 
    bounty:
      date: Oct 7 2014
      amount: 5000.0
      references:
      - https://bugs.chromium.org/p/chromium/issues/detail?id=414124#c44
    lessons:
      yagni:
        note: 
        applies: 
      question: |
        Are there any common lessons we have learned from class that apply to this
        vulnerability? In other words, could this vulnerability serve as an example
        of one of those lessons?
    
        Leave "applies" blank or put false if you did not see that lesson (you do
        not need to put a reason). Put "true" if you feel the lesson applies and put
        a quick explanation of how it applies.
    
        Don't feel the need to claim that ALL of these apply, but it's pretty likely
        that one or two of them apply.
    
        If you think of another lesson we covered in class that applies here, feel
        free to give it a small name and add one in the same format as these.
      serial_killer:
        note: 
        applies: 
      complex_inputs:
        note: Because RSA is a complex form of inputs and outputs
        applies: true
      distrust_input:
        note: 
        applies: 
      least_privilege:
        note: 
        applies: 
      native_wrappers:
        note: 
        applies: 
      defense_in_depth:
        note: 
        applies: 
      secure_by_default:
        note: 
        applies: 
      environment_variables:
        note: 
        applies: 
      security_by_obscurity:
        note: 
        applies: 
      frameworks_are_optional:
        note: 
        applies: 
    reviews:
    - 603153004
    upvotes: 
    mistakes:
      answer: The main mistake was trusting the ASN.1 which had a Bleichenbacher's Low-Exponent
        Attack. This is a problem not only this project had but was cross multiple applications.
        There is only one solution is creating every component, however this is not realisitc.
        So the best solution is testing all aspects of the library you are using and staying
        up to date with what information the creator of the library is releasing.
      question: |
        In your opinion, after all of this research, what mistakes were made that
        led to this vulnerability? Coding mistakes? Design mistakes?
        Maintainability? Requirements? Miscommunications?
    
        Look at the CWE entry for this vulnerability and examine the mitigations
        they have written there. Are they doing those? Does the fix look proper?
    
        Use those questions to inspire your answer. Don't feel obligated to answer
        every one. Write a thoughtful entry here that those ing the software
        engineering industry would find interesting.
    announced: '2014-09-25 13:55:04.387000000 -04:00'
    subsystem:
      name: 
      answer: Chromium/deps/nss
      question: |
        What subsystems was the mistake in?
    
        Look at the path of the source code files code that were fixed to get
        directory names. Look at comments in the code. Look at the bug reports how
        the bug report was tagged. Examples: "clipboard", "gpu", "ssl", "speech", "renderer"
    discovered:
      date: Sep 14 2014
      answer: This was found by a person name Brian Smith, Advanced Threat Research team
        at Intel Security, and Antoine Delignat-Lavaud of Prosecco/INRIA who first found
        it in Mozilla, but reported it to Chromium since it was there too.
      google: false
      contest: false
      question: |
        How was this vulnerability discovered?
    
        Go to the bug report and read the conversation to find out how this was
        originally found. Answer in longform below in "answer", fill in the date in
        YYYY-MM-DD, and then determine if the vulnerability was found by a Google
        employee (you can tell from their email address). If it's clear that the
        vulenrability was discovered by a contest, fill in the name there.
    
        The "automated" flag can be true, false, or nil.
        The "google" flag can be true, false, or nil.
    
        If there is no evidence as to how this vulnerability was found, then you may
        leave the entries blank except for "answer". Write down where you looked in "answer".
      automated: false
    description: An attacker could spoof an RSA signature via the Bleichenbacher's Low-Exponent
      Attack on the TLS handshake and certificate signature forgery. This is due to the
      fact that the Network Security Services had a small Abstract Syntax Notation One
      for decoding.
    unit_tested:
      fix: false
      code: false
      answer: false
      question: |
        Were automated unit tests involved in this vulnerability?
        Was the original code unit tested, or not unit tested? Did the fix involve
        improving the automated tests?
    
        For the "code" answer below, look not only at the fix but the surrounding
        code near the fix and determine if and was there were unit tests involved
        for this module.
    
        For the "fix" answer below, check if the fix for the vulnerability involves
        adding or improving an automated test to ensure this doesn't happen again.
    major_events:
      answer: 
      events:
      - date: 
        name: No significant Events
      - date: 
        name: 
      question: |
        Please record any major events you found in the history of this
        vulnerability. Was the code rewritten at some point? Was a nearby subsystem
        changed? Did the team change?
    
        The event doesn't need to be directly related to this vulnerability, rather,
        we want to capture what the development team was dealing with at the time.
    curation_level: 0
    CWE_instructions: |
      Please go to cwe.mitre.org and find the most specific, appropriate CWE entry
      that describes your vulnerability. (Tip: this may not be a good one to start
      with - spend time understanding this vulnerability before making your choice!)
    bounty_instructions: |
      If you came across any indications that a bounty was paid out for this
      vulnerability, fill it out here. Or correct it if the information already here
      was wrong. Otherwise, leave it blank.
    interesting_commits:
      answer: 
      commits:
      - note: Add RSA-OAEP support from upstream NSS bugs 1009794 and 1009785
        commit: 87b96db4268293187d7cf741907a6d5d1d8080e0
      - note: Does large updates without intermediate commits
        commit: 67f9694a611fcf3e3bc47c1671b93a5afb92a41d
      question: |
        Are there any interesting commits between your VCC(s) and fix(es)?
    
        Write a brief (under 100 words) description of why you think this commit was
        interesting in light of the lessons learned from this vulnerability. Any
        emerging themes?
    
        If there are no interesting commits, demonstrate that you completed this section by explaining what happened between the VCCs and the fix.
    curated_instructions: |
      If you are manually editing this file, then you are "curating" it. Set the
      entry below to "true" as soon as you start. This will enable additional
      integrity checks on this file to make sure you fill everything out properly.
      If you are a student, we cannot accept your work as finished unless curated is
      set to true.
    upvotes_instructions: |
      For the first round, ignore this upvotes number.
    
      For the second round of reviewing, you will be giving a certain amount of
      upvotes to each vulnerability you see. Your peers will tell you how
      interesting they think this vulnerability is, and you'll add that to the
      upvotes score on your branch.
    announced_instructions: |
      Was there a date that this vulnerability was announced to the world? You can
      find this in changelogs, blogs, bug reports, or perhaps the CVE date. A good
      source for this is Chrome's Stable Release Channel
      (https://chromereleases.googleblog.com/).
      Please enter your date in YYYY-MM-DD format.
    fixes_vcc_instructions: |
      Please put the commit hash in "commit" below (see my example in
      CVE-2011-3092.yml). Fixes and VCCs follow the same format.
    description_instructions: |
      You can get an initial description from the CVE entry on cve.mitre.org. These
      descriptions are a fine start, but they can be kind of jargony.
    
      Rewrite this description in your own words. Make it interesting and easy to
      read to anyone with some programming experience. We can always pull up the NVD
      description later to get more technical.
    
      Try to still be specific in your description, but remove Chromium-specific
      stuff. Remove references to versions, specific filenames, and other jargon
      that outsiders to Chromium would not understand. Technology like "regular
      expressions" is fine, and security phrases like "invalid write" are fine to
      keep too.
    

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