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validate: try quadratic, cubic, etc. #40

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davisjam opened this issue Apr 11, 2018 · 0 comments · Fixed by #41
Closed

validate: try quadratic, cubic, etc. #40

davisjam opened this issue Apr 11, 2018 · 0 comments · Fixed by #41

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@davisjam
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See this issue. I think a loop in validate-vuln.pl would work.
davisjam added a commit that referenced this issue Apr 11, 2018
@davisjam
validate: try multiple exploits for poly vulns
d3f3597 
Problem:
The detectors are eager to exploit higher-order
polynomially vulnerable regexes.

In doing so they may overstep and cause a match,
so no backtracking is required.

Example:
See discussion in Weideman:
  NicolaasWeideman/RegexStaticAnalysis#11

Solution:
In such a case the lesser polynomials may still be effective.
validate-vuln.pl now iterates over the proposed list of pumpPairs
and tries pumpPairs 1..$i.
If any time out we have a winner.

Fixes: #40

Test:
- Various tests for check-regex

Misc:
- Also fixes issue in check-regex: wrong path to cache-client
davisjam added a commit that referenced this issue Apr 11, 2018
@davisjam
validate: try multiple exploits for poly vulns
34b2090 
Problem:
The detectors are eager to exploit higher-order
polynomially vulnerable regexes.

In doing so they may overstep and cause a match,
so no backtracking is required.

Example:
See discussion in Weideman:
  NicolaasWeideman/RegexStaticAnalysis#11

Solution:
In such a case the lesser polynomials may still be effective.
validate-vuln.pl now iterates over the proposed list of pumpPairs
and tries pumpPairs 1..$i.
If any time out we have a winner.

Fixes: #40

Test:
- Various tests for check-regex

Misc:
- Also fixes issue in check-regex: wrong path to cache-client
@davisjam davisjam mentioned this issue Apr 11, 2018
Merged
@davisjam davisjam mentioned this issue Apr 11, 2018
Closed
jamesdonoh pushed a commit to jamesdonoh/vuln-regex-detector that referenced this issue Feb 13, 2019
@davisjam
validate: try multiple exploits for poly vulns
6286179 
Problem:
The detectors are eager to exploit higher-order
polynomially vulnerable regexes.

In doing so they may overstep and cause a match,
so no backtracking is required.

Example:
See discussion in Weideman:
  NicolaasWeideman/RegexStaticAnalysis#11

Solution:
In such a case the lesser polynomials may still be effective.
validate-vuln.pl now iterates over the proposed list of pumpPairs
and tries pumpPairs 1..$i.
If any time out we have a winner.

Fixes: davisjam#40

Test:
- Various tests for check-regex

Misc:
- Also fixes issue in check-regex: wrong path to cache-client
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validate: try multiple exploits for poly vulns davisjam/vuln-regex-detector
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@davisjam