| Package | Affected versions | Patched versions |
|---|---|---|
| php | ≥ 8.2.0, < 8.2.34≥ 8.3.0, < 8.3.35≥ 8.4.0, < 8.4.26≥ 8.5.0, < 8.5.11 | 8.2.348.3.358.4.268.5.11 |
The SOAP HTTP client guards its response buffer growth with a check that relies on signed integer overflow, which is undefined behaviour and is not guaranteed to trigger. When the check is optimised away, a malicious SOAP server can make the client allocate a buffer far smaller than the data it then writes into it, producing a heap buffer overflow.
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