119 lines
5.2 KiB
Diff
119 lines
5.2 KiB
Diff
commit bfecc1f11ab5f0cc2aa3dc5cb87d3236a87ce61d
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Author: Tomas Korbar <tkorbar@redhat.com>
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Date: Fri Sep 30 10:52:04 2022 +0200
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Fix CVE-2022-40674
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diff --git a/lib/xmlparse.c b/lib/xmlparse.c
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index d47e42c..0cc24f6 100644
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--- a/lib/xmlparse.c
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+++ b/lib/xmlparse.c
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@@ -5765,8 +5765,14 @@ internalEntityProcessor(XML_Parser parser,
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{
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parser->m_processor = contentProcessor;
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/* see externalEntityContentProcessor vs contentProcessor */
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- return doContent(parser, parser->m_parentParser ? 1 : 0, parser->m_encoding, s, end,
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- nextPtr, (XML_Bool)!parser->m_parsingStatus.finalBuffer);
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+ result = doContent(parser, parser->m_parentParser ? 1 : 0, parser->m_encoding,
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+ s, end, nextPtr,
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+ (XML_Bool)! parser->m_parsingStatus.finalBuffer);
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+ if (result == XML_ERROR_NONE) {
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+ if (! storeRawNames(parser))
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+ return XML_ERROR_NO_MEMORY;
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+ }
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+ return result;
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}
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}
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diff --git a/tests/runtests.c b/tests/runtests.c
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index 569ad8c..f3ebbd7 100644
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--- a/tests/runtests.c
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+++ b/tests/runtests.c
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@@ -5401,6 +5401,78 @@ START_TEST(test_resume_entity_with_syntax_error)
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}
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END_TEST
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+void
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+suspending_comment_handler(void *userData, const XML_Char *UNUSED_P(data)) {
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+ XML_Parser parser = (XML_Parser)userData;
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+ XML_StopParser(parser, XML_TRUE);
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+}
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+
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+START_TEST(test_suspend_resume_internal_entity_issue_629) {
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+ const char *const text
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+ = "<!DOCTYPE a [<!ENTITY e '<!--COMMENT-->a'>]><a>&e;<b>\n"
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+ "<"
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+ "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
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+ "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
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+ "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
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+ "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
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+ "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
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+ "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
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+ "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
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+ "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
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+ "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
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+ "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
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+ "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
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+ "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
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+ "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
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+ "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
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+ "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
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+ "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
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+ "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
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+ "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
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+ "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
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+ "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
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+ "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
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+ "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
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+ "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
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+ "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
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+ "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
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+ "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
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+ "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
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+ "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
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+ "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
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+ "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
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+ "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
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+ "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
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+ "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
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+ "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
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+ "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
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+ "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
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+ "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
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+ "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
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+ "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
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+ "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
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+ "/>"
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+ "</b></a>";
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+ const size_t firstChunkSizeBytes = 54;
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+
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+ XML_Parser parser = XML_ParserCreate(NULL);
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+ XML_SetUserData(parser, parser);
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+ XML_SetCommentHandler(parser, suspending_comment_handler);
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+
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+ if (XML_Parse(parser, text, (int)firstChunkSizeBytes, XML_FALSE)
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+ != XML_STATUS_SUSPENDED)
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+ xml_failure(parser);
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+ if (XML_ResumeParser(parser) != XML_STATUS_OK)
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+ xml_failure(parser);
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+ if (XML_Parse(parser, text + firstChunkSizeBytes,
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+ (int)(strlen(text) - firstChunkSizeBytes), XML_TRUE)
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+ != XML_STATUS_OK)
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+ xml_failure(parser);
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+ XML_ParserFree(parser);
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+}
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+END_TEST
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+
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+
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/* Test suspending and resuming in a parameter entity substitution */
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static void XMLCALL
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element_decl_suspender(void *UNUSED_P(userData),
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@@ -12395,6 +12467,7 @@ make_suite(void)
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tcase_add_test(tc_basic, test_hash_collision);
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tcase_add_test(tc_basic, test_suspend_resume_internal_entity);
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tcase_add_test(tc_basic, test_resume_entity_with_syntax_error);
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+ tcase_add_test(tc_basic, test_suspend_resume_internal_entity_issue_629);
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tcase_add_test(tc_basic, test_suspend_resume_parameter_entity);
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tcase_add_test(tc_basic, test_restart_on_error);
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tcase_add_test(tc_basic, test_reject_lt_in_attribute_value);
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