GHSA-fg72-q65g-wm5wHigh· 7.5▾ TwilightDuplicate Advisory: H3: Unbounded Chunked Cookie Count in Session Cleanup Loop may Lead to Denial of Service
▾ Twilight zone — High severity, or a signal on a lesser flaw
impact 41.3 · likelihood 0 · exploitation 0
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Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via GHSA
Last analysed / modified upstream
This advisory has been withdrawn because it is a duplicate of GHSA-q5pr-72pq-83v3. This link is maintained to preserve external references.
h3 versions before 2.0.1-rc.18 fail to validate the chunk count parsed from user-controlled cookie values in setChunkedCookie() and deleteChunkedCookie() functions. Attackers can send a crafted cookie header with an extremely large chunk count to trigger an O(n²) cleanup loop that hangs the server process.
h3 >= 2.0.0-beta.4, < 2.0.1-rc.18Refer to the advisory for the patched release.
Connected by shared product, vendor, weakness, or advisory.
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