Design/Logic Flaw

2023-03-2220:15:00

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design flaw

logic flaw

saml implementation

golang

http request

server-side processing

deflate algorithm

server crash

patched version 0.4.13

0.001 Low

EPSS

Percentile

47.5%

JSON

The crewjam/saml go library contains a partial implementation of the SAML standard in golang. Prior to version 0.4.13, the package’s use of flate.NewReader does not limit the size of the input. The user can pass more than 1 MB of data in the HTTP request to the processing functions, which will be decompressed server-side using the Deflate algorithm. Therefore, after repeating the same request multiple times, it is possible to achieve a reliable crash since the operating system kills the process. This issue is patched in version 0.4.13.