h2o: musl libc stack overflow (QPACK)
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
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| h2o | h2o | affected |
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No data.
No data.
| Vendor | Product | Versions | ||||||||
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| H2o | H2o |
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No CVSS v4.0
No CVSS v3.0
No CVSS v2
This CVE is not in the KEV list.
Exploit prediction score: < 1% (0.488% probability within 30 days)
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| Metrics |
ssvc
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| First Time appeared |
H2o
H2o h2o |
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| Vendors & Products |
H2o
H2o h2o |
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| Description | h2o is an HTTP server with support for HTTP/1.x, HTTP/2 and HTTP/3. Prior to commit edd7a120bfc4af11ac0cbebce2a43cc1f93f9af1, when h2o processes a QPACK instruction sent from the peer over HTTP/3, lib/http3/qpack.c might allocate an on-stack buffer as large as approximately 800 KB by calling alloca, which exceeds the default pthread stack size used by musl libc and causes the h2o server to crash with a segmentation fault while touching the guard page. This issue is fixed in commit edd7a120bfc4af11ac0cbebce2a43cc1f93f9af1. | |
| Title | h2o: musl libc stack overflow (QPACK) | |
| Weaknesses | CWE-789 | |
| References |
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| Metrics |
cvssV3_1
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