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e20d844068
patches/packages/libxml2-2.12.2-x86_64-1_slack15.0.txz: Upgraded.
Add --sysconfdir=/etc option so that this can find the xml catalog.
Thanks to SpiderTux.
Fix the following security issues:
Fix integer overflows with XML_PARSE_HUGE.
Fix dict corruption caused by entity reference cycles.
Hashing of empty dict strings isn't deterministic.
Fix null deref in xmlSchemaFixupComplexType.
For more information, see:
https://www.cve.org/CVERecord?id=CVE-2022-40303
https://www.cve.org/CVERecord?id=CVE-2022-40304
https://www.cve.org/CVERecord?id=CVE-2023-29469
https://www.cve.org/CVERecord?id=CVE-2023-28484
(* Security fix *)
34 lines
1.2 KiB
Diff
34 lines
1.2 KiB
Diff
diff --git a/python/libxml.c b/python/libxml.c
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index bf048006..5f42e5b7 100644
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--- a/python/libxml.c
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+++ b/python/libxml.c
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@@ -1505,6 +1505,7 @@ libxml_xmlErrorFuncHandler(ATTRIBUTE_UNUSED void *ctx, const char *msg,
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PyObject *message;
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PyObject *result;
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char str[1000];
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+ unsigned char *ptr = (unsigned char *)str;
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if (libxml_xmlPythonErrorFuncHandler == NULL) {
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va_start(ap, msg);
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@@ -1516,12 +1517,20 @@ libxml_xmlErrorFuncHandler(ATTRIBUTE_UNUSED void *ctx, const char *msg,
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str[999] = 0;
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va_end(ap);
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+#if PY_MAJOR_VERSION >= 3
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+ /* Ensure the error string doesn't start at UTF8 continuation. */
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+ while (*ptr && (*ptr & 0xc0) == 0x80)
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+ ptr++;
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+#endif
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+
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list = PyTuple_New(2);
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PyTuple_SetItem(list, 0, libxml_xmlPythonErrorFuncCtxt);
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Py_XINCREF(libxml_xmlPythonErrorFuncCtxt);
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- message = libxml_charPtrConstWrap(str);
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+ message = libxml_charPtrConstWrap(ptr);
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PyTuple_SetItem(list, 1, message);
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result = PyObject_CallObject(libxml_xmlPythonErrorFuncHandler, list);
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+ /* Forget any errors caused in the error handler. */
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+ PyErr_Clear();
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Py_XDECREF(list);
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Py_XDECREF(result);
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}
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