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erik-krogherik-krogh
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writing out the truth table for DotDotSlashPrefixRemovingReplace
1 parent 94751c1 commit 9c20531

2 files changed

Lines changed: 21 additions & 39 deletions

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‎javascript/ql/src/semmle/javascript/security/dataflow/TaintedPath.qll‎

Lines changed: 9 additions & 3 deletions
Original file line numberDiff line numberDiff line change
@@ -209,9 +209,15 @@ module TaintedPath {
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// foo.replace(/(\.\.\/)*/, "") and similar
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exists(DotDotSlashPrefixRemovingReplace call |
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src = call.getInput() and
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dst = call.getOutput() and
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(srclabel.isNonNormalized() or dstlabel.isAbsolute()) and // if src is normalized, then dst must be absolute (if dst is relative, then dst is sanitized)
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dstlabel.toAbsolute() = srclabel.toAbsolute() // preserves normalization status
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dst = call.getOutput()
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|
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// the 4 possible combinations of normalized + relative for `srclabel`, and the possible values for `dstlabel` in each case.
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srclabel.isNonNormalized() and srclabel.isRelative() // raw + relative -> any()
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or
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srclabel.isNormalized() and srclabel.isAbsolute() and srclabel = dstlabel // normalized + absolute -> normalized + absolute
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or
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srclabel.isNonNormalized() and srclabel.isAbsolute() and dstlabel.isAbsolute() // raw + absolute -> raw/normalized + absolute
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// normalized + relative -> none()
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)
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or
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// path.join()

‎javascript/ql/test/query-tests/Security/CWE-022/TaintedPath/TaintedPath.expected‎

Lines changed: 12 additions & 36 deletions
Original file line numberDiff line numberDiff line change
@@ -1298,10 +1298,10 @@ nodes
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| TaintedPath.js:201:40:201:73 | path.re ... +/, '') |
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| TaintedPath.js:201:40:201:73 | path.re ... +/, '') |
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| TaintedPath.js:201:40:201:73 | path.re ... +/, '') |
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| TaintedPath.js:202:29:202:54 | pathMod ... e(path) |
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| TaintedPath.js:202:29:202:54 | pathMod ... e(path) |
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| TaintedPath.js:202:29:202:54 | pathMod ... e(path) |
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| TaintedPath.js:202:29:202:54 | pathMod ... e(path) |
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| TaintedPath.js:201:40:201:73 | path.re ... +/, '') |
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| TaintedPath.js:201:40:201:73 | path.re ... +/, '') |
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| TaintedPath.js:201:40:201:73 | path.re ... +/, '') |
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| TaintedPath.js:201:40:201:73 | path.re ... +/, '') |
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| TaintedPath.js:202:29:202:54 | pathMod ... e(path) |
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| TaintedPath.js:202:29:202:54 | pathMod ... e(path) |
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| TaintedPath.js:202:29:202:54 | pathMod ... e(path) |
@@ -1319,14 +1319,6 @@ nodes
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| TaintedPath.js:202:50:202:53 | path |
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| TaintedPath.js:202:50:202:53 | path |
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| TaintedPath.js:202:50:202:53 | path |
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| TaintedPath.js:202:50:202:53 | path |
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| TaintedPath.js:202:50:202:53 | path |
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| TaintedPath.js:202:50:202:53 | path |
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| TaintedPath.js:202:50:202:53 | path |
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| TaintedPath.js:202:50:202:53 | path |
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| TaintedPath.js:202:50:202:53 | path |
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| TaintedPath.js:202:50:202:53 | path |
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| TaintedPath.js:202:50:202:53 | path |
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| normalizedPaths.js:11:7:11:27 | path |
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| normalizedPaths.js:11:7:11:27 | path |
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| normalizedPaths.js:11:7:11:27 | path |
@@ -4451,14 +4443,6 @@ edges
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| TaintedPath.js:173:7:173:48 | path | TaintedPath.js:202:50:202:53 | path |
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| TaintedPath.js:173:7:173:48 | path | TaintedPath.js:202:50:202:53 | path |
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| TaintedPath.js:173:7:173:48 | path | TaintedPath.js:202:50:202:53 | path |
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| TaintedPath.js:173:7:173:48 | path | TaintedPath.js:202:50:202:53 | path |
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| TaintedPath.js:173:7:173:48 | path | TaintedPath.js:202:50:202:53 | path |
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| TaintedPath.js:173:7:173:48 | path | TaintedPath.js:202:50:202:53 | path |
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| TaintedPath.js:173:7:173:48 | path | TaintedPath.js:202:50:202:53 | path |
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| TaintedPath.js:173:7:173:48 | path | TaintedPath.js:202:50:202:53 | path |
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| TaintedPath.js:173:7:173:48 | path | TaintedPath.js:202:50:202:53 | path |
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| TaintedPath.js:173:7:173:48 | path | TaintedPath.js:202:50:202:53 | path |
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| TaintedPath.js:173:7:173:48 | path | TaintedPath.js:202:50:202:53 | path |
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| TaintedPath.js:173:14:173:37 | url.par ... , true) | TaintedPath.js:173:14:173:43 | url.par ... ).query |
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| TaintedPath.js:173:14:173:37 | url.par ... , true) | TaintedPath.js:173:14:173:43 | url.par ... ).query |
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| TaintedPath.js:173:14:173:37 | url.par ... , true) | TaintedPath.js:173:14:173:43 | url.par ... ).query |
@@ -4667,6 +4651,14 @@ edges
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| TaintedPath.js:201:40:201:73 | path.re ... +/, '') | TaintedPath.js:201:29:201:73 | "prefix ... +/, '') |
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| TaintedPath.js:201:40:201:73 | path.re ... +/, '') | TaintedPath.js:201:29:201:73 | "prefix ... +/, '') |
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| TaintedPath.js:201:40:201:73 | path.re ... +/, '') | TaintedPath.js:201:29:201:73 | "prefix ... +/, '') |
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| TaintedPath.js:201:40:201:73 | path.re ... +/, '') | TaintedPath.js:201:29:201:73 | "prefix ... +/, '') |
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| TaintedPath.js:201:40:201:73 | path.re ... +/, '') | TaintedPath.js:201:29:201:73 | "prefix ... +/, '') |
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| TaintedPath.js:201:40:201:73 | path.re ... +/, '') | TaintedPath.js:201:29:201:73 | "prefix ... +/, '') |
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| TaintedPath.js:201:40:201:73 | path.re ... +/, '') | TaintedPath.js:201:29:201:73 | "prefix ... +/, '') |
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| TaintedPath.js:201:40:201:73 | path.re ... +/, '') | TaintedPath.js:201:29:201:73 | "prefix ... +/, '') |
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| TaintedPath.js:201:40:201:73 | path.re ... +/, '') | TaintedPath.js:201:29:201:73 | "prefix ... +/, '') |
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| TaintedPath.js:201:40:201:73 | path.re ... +/, '') | TaintedPath.js:201:29:201:73 | "prefix ... +/, '') |
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| TaintedPath.js:201:40:201:73 | path.re ... +/, '') | TaintedPath.js:201:29:201:73 | "prefix ... +/, '') |
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| TaintedPath.js:202:29:202:54 | pathMod ... e(path) | TaintedPath.js:202:29:202:84 | pathMod ... +/, '') |
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| TaintedPath.js:202:29:202:54 | pathMod ... e(path) | TaintedPath.js:202:29:202:84 | pathMod ... +/, '') |
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| TaintedPath.js:202:29:202:54 | pathMod ... e(path) | TaintedPath.js:202:29:202:84 | pathMod ... +/, '') |
@@ -4675,22 +4667,6 @@ edges
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| TaintedPath.js:202:29:202:54 | pathMod ... e(path) | TaintedPath.js:202:29:202:84 | pathMod ... +/, '') |
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| TaintedPath.js:202:29:202:54 | pathMod ... e(path) | TaintedPath.js:202:29:202:84 | pathMod ... +/, '') |
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| TaintedPath.js:202:29:202:54 | pathMod ... e(path) | TaintedPath.js:202:29:202:84 | pathMod ... +/, '') |
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| TaintedPath.js:202:29:202:54 | pathMod ... e(path) | TaintedPath.js:202:29:202:84 | pathMod ... +/, '') |
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| TaintedPath.js:202:29:202:54 | pathMod ... e(path) | TaintedPath.js:202:29:202:84 | pathMod ... +/, '') |
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| TaintedPath.js:202:29:202:54 | pathMod ... e(path) | TaintedPath.js:202:29:202:84 | pathMod ... +/, '') |
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| TaintedPath.js:202:29:202:54 | pathMod ... e(path) | TaintedPath.js:202:29:202:84 | pathMod ... +/, '') |
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| TaintedPath.js:202:29:202:54 | pathMod ... e(path) | TaintedPath.js:202:29:202:84 | pathMod ... +/, '') |
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| TaintedPath.js:202:29:202:54 | pathMod ... e(path) | TaintedPath.js:202:29:202:84 | pathMod ... +/, '') |
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| TaintedPath.js:202:29:202:54 | pathMod ... e(path) | TaintedPath.js:202:29:202:84 | pathMod ... +/, '') |
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| TaintedPath.js:202:29:202:54 | pathMod ... e(path) | TaintedPath.js:202:29:202:84 | pathMod ... +/, '') |
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| TaintedPath.js:202:50:202:53 | path | TaintedPath.js:202:29:202:54 | pathMod ... e(path) |
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| TaintedPath.js:202:50:202:53 | path | TaintedPath.js:202:29:202:54 | pathMod ... e(path) |
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| TaintedPath.js:202:50:202:53 | path | TaintedPath.js:202:29:202:54 | pathMod ... e(path) |
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| TaintedPath.js:202:50:202:53 | path | TaintedPath.js:202:29:202:54 | pathMod ... e(path) |
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| TaintedPath.js:202:50:202:53 | path | TaintedPath.js:202:29:202:54 | pathMod ... e(path) |
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| TaintedPath.js:202:50:202:53 | path | TaintedPath.js:202:29:202:54 | pathMod ... e(path) |
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| TaintedPath.js:202:50:202:53 | path | TaintedPath.js:202:29:202:54 | pathMod ... e(path) |
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| TaintedPath.js:202:50:202:53 | path | TaintedPath.js:202:29:202:54 | pathMod ... e(path) |
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| TaintedPath.js:202:50:202:53 | path | TaintedPath.js:202:29:202:54 | pathMod ... e(path) |
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| TaintedPath.js:202:50:202:53 | path | TaintedPath.js:202:29:202:54 | pathMod ... e(path) |
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| TaintedPath.js:202:50:202:53 | path | TaintedPath.js:202:29:202:54 | pathMod ... e(path) |

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