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reject negative UBJSON/BJData string length (#5284)

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This commit is contained in:
Angadi56
2026-07-21 02:02:38 +05:30
committed by GitHub
parent 1c5a953de5
commit 3565f40229
4 changed files with 92 additions and 8 deletions
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tests/src/unit-bjdata.cpp
+13
View File
@@ -2721,6 +2721,19 @@ TEST_CASE("BJData")
CHECK_THROWS_WITH_AS(_ = json::from_bjdata(v), "[json.exception.parse_error.113] parse error at byte 2: syntax error while parsing BJData string: expected length type specification (U, i, u, I, m, l, M, L); last byte: 0x31", json::parse_error&);
}
SECTION("negative length")
{
json _;
std::vector<uint8_t> const vi = {'S', 'i', 0xFF};
CHECK_THROWS_WITH_AS(_ = json::from_bjdata(vi), "[json.exception.parse_error.113] parse error at byte 3: syntax error while parsing BJData string: string length must not be negative", json::parse_error&);
CHECK(json::from_bjdata(vi, true, false).is_discarded());
std::vector<uint8_t> const vl = {'S', 'l', 0xFF, 0xFF, 0xFF, 0xFF};
CHECK_THROWS_WITH_AS(_ = json::from_bjdata(vl), "[json.exception.parse_error.113] parse error at byte 6: syntax error while parsing BJData string: string length must not be negative", json::parse_error&);
CHECK(json::from_bjdata(vl, true, false).is_discarded());
}
SECTION("parse bjdata markers in ubjson")
{
// create a single-character string for all number types
tests/src/unit-ubjson.cpp
+25
View File
@@ -1862,6 +1862,31 @@ TEST_CASE("UBJSON")
json _;
CHECK_THROWS_WITH_AS(_ = json::from_ubjson(v), "[json.exception.parse_error.113] parse error at byte 2: syntax error while parsing UBJSON string: expected length type specification (U, i, I, l, L); last byte: 0x31", json::parse_error&);
}
SECTION("negative length")
{
json _;
std::vector<uint8_t> const vi = {'S', 'i', 0xFF};
CHECK_THROWS_WITH_AS(_ = json::from_ubjson(vi), "[json.exception.parse_error.113] parse error at byte 3: syntax error while parsing UBJSON string: string length must not be negative", json::parse_error&);
CHECK(json::from_ubjson(vi, true, false).is_discarded());
std::vector<uint8_t> const vI = {'S', 'I', 0xFF, 0xFF};
CHECK_THROWS_WITH_AS(_ = json::from_ubjson(vI), "[json.exception.parse_error.113] parse error at byte 4: syntax error while parsing UBJSON string: string length must not be negative", json::parse_error&);
CHECK(json::from_ubjson(vI, true, false).is_discarded());
std::vector<uint8_t> const vl = {'S', 'l', 0xFF, 0xFF, 0xFF, 0xFF};
CHECK_THROWS_WITH_AS(_ = json::from_ubjson(vl), "[json.exception.parse_error.113] parse error at byte 6: syntax error while parsing UBJSON string: string length must not be negative", json::parse_error&);
CHECK(json::from_ubjson(vl, true, false).is_discarded());
std::vector<uint8_t> const vL = {'S', 'L', 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF};
CHECK_THROWS_WITH_AS(_ = json::from_ubjson(vL), "[json.exception.parse_error.113] parse error at byte 10: syntax error while parsing UBJSON string: string length must not be negative", json::parse_error&);
CHECK(json::from_ubjson(vL, true, false).is_discarded());
// a length of zero remains valid and yields an empty string
std::vector<uint8_t> const v0 = {'S', 'i', 0};
CHECK(json::from_ubjson(v0) == json(""));
}
}
SECTION("array")