UTF8StreamJsonParser: fix byte to int conversion for malformed escapes #540
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This change ensures that the byte-to-int conversion results in a positive integer. Prior to this, the conversion could result to a negative integer when the byte was >= 0x80, which would lead to an ArrayIndexOutOfBoundsException when calling CharTypes.charToHex(ch).
The issue could be reproduced with the following snippet: `factory.createParser(ObjectReadContext.empty(), "\"\\u\u0080\"".getBytes("UTF-8").nextToken()`.
Traceback:
```
java.lang.ArrayIndexOutOfBoundsException: -62
at com.fasterxml.jackson.core.io.CharTypes.charToHex(CharTypes.java:213)
at com.fasterxml.jackson.core.json.UTF8StreamJsonParser._decodeEscaped(UTF8StreamJsonParser.java:3606)
at com.fasterxml.jackson.core.json.UTF8StreamJsonParser._skipString(UTF8StreamJsonParser.java:2888)
at com.fasterxml.jackson.core.json.UTF8StreamJsonParser.nextToken(UTF8StreamJsonParser.java:685)
```
Member
|
Looks legit, thank you for reporting this, contributing patch! Due to long list of open issues (plus my vacation later this week) it may take a while to get this merged, but it will get done eventually. |
cowtowncoder
changed the title
Member
|
@alpire Thank you again -- I merged this manually to backport in 2.9, added a simple test as suggested. Will be in 2.9.10 / 2.10.0. |
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This change ensures that the byte-to-int conversion results in a positive integer. Prior to this, the conversion could result to a negative integer when the byte was >= 0x80, which would lead to an ArrayIndexOutOfBoundsException when calling CharTypes.charToHex(ch).
The issue can be reproduced with the following snippet:
factory.createParser(ObjectReadContext.empty(), "\"\\u\u0080\"".getBytes("UTF-8").nextToken().Traceback:
I'd be happy to add this testcase to the tests if you point me to the right test file.