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Limit sdp lines (Credit to OSS-Fuzz) #3414

Merged
merged 2 commits into from
Sep 4, 2024
Merged

Limit sdp lines (Credit to OSS-Fuzz) #3414

merged 2 commits into from
Sep 4, 2024

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@atoppi atoppi commented Aug 5, 2024

This PR is a workaround for an issue discovered by OSS-Fuzz when trying to parse a SDP with a large number of lines.
Long story short, the g_strsplit function is not efficient when dealing with string with a lot of delimiter (\n) occurrences.

As a consequence we limit the number of SDP lines to 10000 in order to avoid the timeout on OSS-Fuzz and work around the issue in Janus.
Of course this is not the optimal solution since we do not want to hardcode a number of lines. In the long term we plan to rewrite the splitting algorithm to avoid such inefficiencies.

@atoppi atoppi changed the title Limit sdp lines Limit sdp lines (Credit to OSS-Fuzz) Aug 5, 2024
@atoppi atoppi merged commit 5ba57e4 into master Sep 4, 2024
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atoppi added a commit that referenced this pull request Sep 4, 2024
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atoppi commented Sep 9, 2024

See #3424 for a proper fix.

@atoppi atoppi deleted the limit-sdp-lines branch September 13, 2024 13:23
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