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Typo and more explanation.

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chriseth 2017-04-12 15:35:25 +02:00
parent a7e605a7a1
commit feacfcfd20
3 changed files with 45 additions and 25 deletions
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2
docs/bugs.json
View File

@ -27,7 +27,7 @@
"fixed": "0.4.4"
},
{
"name": "StaleKnowledegAboutSHA3",
"name": "StaleKnowledgeAboutSHA3",
"summary": "The optimizer did not properly reset its knowledge about SHA3 operations resulting in some hashes (also used for storage variable positions) not being calculated correctly.",
"description": "The optimizer performs symbolic execution in order to save re-evaluating expressions whose value is already known. This knowledge was not properly reset across control flow paths and thus the optimizer sometimes thought that the result of a SHA3 operation is already present on the stack. This could result in data corruption by accessing the wrong storage slot.",
"severity": "low/medium",

26
docs/bugs.rst
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@ -6,12 +6,32 @@
List of Known Bugs
##################
Below, you can find a JSON-formatted list of all known security-relevant bugs in the
Below, you can find a JSON-formatted list of known security-relevant bugs in the
Solidity compiler. The file itself is hosted in the `Github repository
<https://github.com/ethereum/solidity/blob/develop/docs/bugs.json>`_.
The list stretches back as far as version 0.3.0, bugs known to be present only
in previous versions are not listed. The JSON file is an array of objects, one for
each bug, with the following keys:
in versions preceding that are not listed.
There is another file called `bugs_by_version.json
<https://github.com/ethereum/solidity/blob/develop/docs/bugs_by_version.json>`_,
which can be used to check which bugs affect a specific version of the compiler.
Contract source verification tools and also other tools interacting with
contracts should consult this list according to the following criteria:
- It is mildly suspicious if a contract was compiled with a nightly
compiler version instead of a released version. These compiler versions
might contain undocumented bugs.
- It is also mildly suspicious if a contract was compiled with a version that was
not the most recent at the time the contract was created. For contracts
created from other contracts, you have to follow the creation chain
back to a transaction and use the date of that transaction as creation date.
- It is highly suspicious if a contract was compiled with a compiler that
contains a known bug and the contract was created at a time where a newer
compiler version containing a fix was already released.
The JSON file of known bugs below is an array of objects, one for each bug,
with the following keys:
name
Unique name given to the bug

42
docs/bugs_by_version.json
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@ -2,7 +2,7 @@
"0.1.0": {
"bugs": [
"IdentityPrecompileReturnIgnored",
"StaleKnowledegAboutSHA3",
"StaleKnowledgeAboutSHA3",
"SendFailsForZeroEther",
"DynamicAllocationInfiniteLoop",
"ClearStateOnCodePathJoin",
@ -15,7 +15,7 @@
"0.1.1": {
"bugs": [
"IdentityPrecompileReturnIgnored",
"StaleKnowledegAboutSHA3",
"StaleKnowledgeAboutSHA3",
"SendFailsForZeroEther",
"DynamicAllocationInfiniteLoop",
"ClearStateOnCodePathJoin",
@ -28,7 +28,7 @@
"0.1.2": {
"bugs": [
"IdentityPrecompileReturnIgnored",
"StaleKnowledegAboutSHA3",
"StaleKnowledgeAboutSHA3",
"SendFailsForZeroEther",
"DynamicAllocationInfiniteLoop",
"ClearStateOnCodePathJoin",
@ -41,7 +41,7 @@
"0.1.3": {
"bugs": [
"IdentityPrecompileReturnIgnored",
"StaleKnowledegAboutSHA3",
"StaleKnowledgeAboutSHA3",
"SendFailsForZeroEther",
"DynamicAllocationInfiniteLoop",
"ClearStateOnCodePathJoin",
@ -54,7 +54,7 @@
"0.1.4": {
"bugs": [
"IdentityPrecompileReturnIgnored",
"StaleKnowledegAboutSHA3",
"StaleKnowledgeAboutSHA3",
"SendFailsForZeroEther",
"DynamicAllocationInfiniteLoop",
"ClearStateOnCodePathJoin",
@ -67,7 +67,7 @@
"0.1.5": {
"bugs": [
"IdentityPrecompileReturnIgnored",
"StaleKnowledegAboutSHA3",
"StaleKnowledgeAboutSHA3",
"SendFailsForZeroEther",
"DynamicAllocationInfiniteLoop",
"ClearStateOnCodePathJoin",
@ -81,7 +81,7 @@
"bugs": [
"IdentityPrecompileReturnIgnored",
"HighOrderByteCleanStorage",
"StaleKnowledegAboutSHA3",
"StaleKnowledgeAboutSHA3",
"SendFailsForZeroEther",
"DynamicAllocationInfiniteLoop",
"ClearStateOnCodePathJoin",
@ -95,7 +95,7 @@
"bugs": [
"IdentityPrecompileReturnIgnored",
"HighOrderByteCleanStorage",
"StaleKnowledegAboutSHA3",
"StaleKnowledgeAboutSHA3",
"SendFailsForZeroEther",
"DynamicAllocationInfiniteLoop",
"ClearStateOnCodePathJoin",
@ -109,7 +109,7 @@
"bugs": [
"IdentityPrecompileReturnIgnored",
"HighOrderByteCleanStorage",
"StaleKnowledegAboutSHA3",
"StaleKnowledgeAboutSHA3",
"SendFailsForZeroEther",
"DynamicAllocationInfiniteLoop",
"ClearStateOnCodePathJoin",
@ -123,7 +123,7 @@
"bugs": [
"IdentityPrecompileReturnIgnored",
"HighOrderByteCleanStorage",
"StaleKnowledegAboutSHA3",
"StaleKnowledgeAboutSHA3",
"SendFailsForZeroEther",
"DynamicAllocationInfiniteLoop",
"ClearStateOnCodePathJoin",
@ -137,7 +137,7 @@
"bugs": [
"IdentityPrecompileReturnIgnored",
"HighOrderByteCleanStorage",
"StaleKnowledegAboutSHA3",
"StaleKnowledgeAboutSHA3",
"SendFailsForZeroEther",
"DynamicAllocationInfiniteLoop",
"ClearStateOnCodePathJoin",
@ -151,7 +151,7 @@
"bugs": [
"IdentityPrecompileReturnIgnored",
"HighOrderByteCleanStorage",
"StaleKnowledegAboutSHA3",
"StaleKnowledgeAboutSHA3",
"SendFailsForZeroEther",
"DynamicAllocationInfiniteLoop",
"ClearStateOnCodePathJoin",
@ -164,7 +164,7 @@
"bugs": [
"IdentityPrecompileReturnIgnored",
"HighOrderByteCleanStorage",
"StaleKnowledegAboutSHA3",
"StaleKnowledgeAboutSHA3",
"SendFailsForZeroEther",
"DynamicAllocationInfiniteLoop",
"ClearStateOnCodePathJoin",
@ -176,7 +176,7 @@
"bugs": [
"IdentityPrecompileReturnIgnored",
"HighOrderByteCleanStorage",
"StaleKnowledegAboutSHA3",
"StaleKnowledgeAboutSHA3",
"SendFailsForZeroEther",
"DynamicAllocationInfiniteLoop",
"ClearStateOnCodePathJoin",
@ -188,7 +188,7 @@
"bugs": [
"IdentityPrecompileReturnIgnored",
"HighOrderByteCleanStorage",
"StaleKnowledegAboutSHA3",
"StaleKnowledgeAboutSHA3",
"SendFailsForZeroEther",
"DynamicAllocationInfiniteLoop",
"ClearStateOnCodePathJoin"
@ -199,7 +199,7 @@
"bugs": [
"IdentityPrecompileReturnIgnored",
"HighOrderByteCleanStorage",
"StaleKnowledegAboutSHA3",
"StaleKnowledgeAboutSHA3",
"SendFailsForZeroEther",
"DynamicAllocationInfiniteLoop",
"ClearStateOnCodePathJoin"
@ -210,7 +210,7 @@
"bugs": [
"IdentityPrecompileReturnIgnored",
"HighOrderByteCleanStorage",
"StaleKnowledegAboutSHA3",
"StaleKnowledgeAboutSHA3",
"SendFailsForZeroEther",
"DynamicAllocationInfiniteLoop",
"ClearStateOnCodePathJoin"
@ -221,7 +221,7 @@
"bugs": [
"IdentityPrecompileReturnIgnored",
"HighOrderByteCleanStorage",
"StaleKnowledegAboutSHA3",
"StaleKnowledgeAboutSHA3",
"SendFailsForZeroEther"
],
"released": "2016-08-10"
@ -230,7 +230,7 @@
"bugs": [
"IdentityPrecompileReturnIgnored",
"HighOrderByteCleanStorage",
"StaleKnowledegAboutSHA3",
"StaleKnowledgeAboutSHA3",
"LibrariesNotCallableFromPayableFunctions"
],
"released": "2016-09-08"
@ -239,7 +239,7 @@
"bugs": [
"IdentityPrecompileReturnIgnored",
"HighOrderByteCleanStorage",
"StaleKnowledegAboutSHA3",
"StaleKnowledgeAboutSHA3",
"LibrariesNotCallableFromPayableFunctions"
],
"released": "2016-09-09"
@ -252,7 +252,7 @@
"bugs": [
"IdentityPrecompileReturnIgnored",
"HighOrderByteCleanStorage",
"StaleKnowledegAboutSHA3"
"StaleKnowledgeAboutSHA3"
],
"released": "2016-09-17"
},