{"id":"CVE-2023-34453","aliases":["CLSA-2024-1732492826","EUVD-2023-1858","GHSA-pqr6-cmr2-h8hf","ROOT-APP-MAVEN-CVE-2023-34453","UBUNTU-CVE-2023-34453"],"status":"published","title":"snappy-java's Integer Overflow vulnerability in shuffle leads to DoS","description":"snappy-java is a fast compressor/decompressor for Java. Due to unchecked multiplications, an integer overflow may occur in versions prior to 1.1.10.1, causing a fatal error.\n\nThe function `shuffle(int[] input)` in the file `BitShuffle.java` receives an array of integers and applies a bit shuffle on it. It does so by multiplying the length by 4 and passing it to the natively compiled shuffle function. Since the length is not tested, the multiplication by four can cause an integer overflow and become a smaller value than the true size, or even zero or negative. In the case of a negative value, a `java.lang.NegativeArraySizeException` exception will raise, which can crash the program. In a case of a value that is zero or too small, the code that afterwards references the shuffled array will assume a bigger size of the array, which might cause exceptions such as `java.lang.ArrayIndexOutOfBoundsException`.\n\nThe same issue exists also when using the `shuffle` functions that receive a double, float, long and short, each using a different multiplier that may cause the same issue.\n\nVersion 1.1.10.1 contains a patch for this vulnerability.","severity":{"version":"3.1","score":5.9,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.01707,"percentile":0.77507,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-190"],"published":"2023-06-15T16:12:34Z","modified":"2026-10-28T10:38:52Z","fixes":[{"ecosystem":"Maven","package":"org.xerial.snappy:snappy-java","fixed_in":["1.1.10.1"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"Maven","package":"org.xerial.snappy:snappy-java","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"last_affected":"1.1.10.0"},{"fixed":"1.1.10.1"}]}]},{"source":"osv","ecosystem":"TuxCare:Maven","package":"org.xerial.snappy:snappy-java","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"1.1.8.4"},{"fixed":"1.1.8.4.tuxcare"}]}],"versions":["1.1.8.4"],"bundled":4},{"source":"osv","ecosystem":"Maven","package":"org.xerial.snappy:snappy-java","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.1.10.1"}]}],"versions":["1.0.1-rc1","1.0.1-rc2","1.0.1-rc3","1.0.1-rc4","1.0.3","1.0.3-rc1","1.0.3-rc2","1.0.3-rc3","1.0.3-rc4","1.0.3.1","1.0.3.2","1.0.3.3","1.0.4","1.0.4.1","1.0.5","1.0.5-M1","1.0.5-M2","1.0.5-M3","1.0.5-M4","1.0.5.1","1.0.5.2","1.0.5.3","1.0.5.4","1.1.0","1.1.0-M1","1.1.0-M2","1.1.0-M3","1.1.0-M4","1.1.0.1","1.1.1","1.1.1-M1","1.1.1-M2","1.1.1-M3","1.1.1-M4","1.1.1.1","1.1.1.2","1.1.1.3","1.1.1.4","1.1.1.5","1.1.1.6","1.1.1.7","1.1.10.0","1.1.2","1.1.2-M1","1.1.2-RC1","1.1.2-RC2","1.1.2-RC3","1.1.2.1","1.1.2.2","1.1.2.3","1.1.2.4","1.1.2.5","1.1.2.6","1.1.3-M1","1.1.3-M2","1.1.4","1.1.4-M1","1.1.4-M2","1.1.4-M3","1.1.7","1.1.7.1","1.1.7.2","1.1.7.3","1.1.7.4","1.1.7.5","1.1.7.6","1.1.7.7","1.1.7.8","1.1.8","1.1.8.1","1.1.8.2","1.1.8.3","1.1.8.4","1.1.9.0","1.1.9.1"]},{"source":"osv","ecosystem":"Ubuntu:14.04:LTS","package":"snappy-java","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.0.4.1~dfsg-1"]},{"source":"osv","ecosystem":"Ubuntu:16.04:LTS","package":"snappy-java","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.1.1.7-2","1.1.2-1","1.1.2.1-2"]},{"source":"osv","ecosystem":"Ubuntu:18.04:LTS","package":"snappy-java","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.1.4-1"]},{"source":"osv","ecosystem":"Ubuntu:20.04:LTS","package":"snappy-java","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.1.7.2-1","1.1.7.3-1","1.1.7.3-1build1"]},{"source":"osv","ecosystem":"Ubuntu:22.04:LTS","package":"snappy-java","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.1.8.3-1"]},{"source":"osv","ecosystem":"Ubuntu:24.04:LTS","package":"snappy-java","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.1.8.3-1","1.1.10.5-1","1.1.10.5-1build1"]},{"source":"osv","ecosystem":"Ubuntu:25.10","package":"snappy-java","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.1.10.7-1"]},{"source":"osv","ecosystem":"Ubuntu:26.10","package":"snappy-java","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.1.10.8-1"]},{"source":"osv","ecosystem":"Ubuntu:26.04:LTS","package":"snappy-java","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.1.10.7-1","1.1.10.8-1"]}],"products":[{"vendor":"xerial","product":"snappy-java"}],"references":[{"url":"https://github.com/xerial/snappy-java/security/advisories/GHSA-pqr6-cmr2-h8hf","tags":["x_refsource_CONFIRM","x_transferred","Exploit","Vendor Advisory","advisory","web","report"]},{"url":"https://github.com/xerial/snappy-java/commit/820e2e074c58748b41dbd547f4edba9e108ad905","tags":["x_refsource_MISC","x_transferred","Patch","fix","web","report"]},{"url":"https://github.com/xerial/snappy-java/blob/05c39b2ca9b5b7b39611529cc302d3d796329611/src/main/java/org/xerial/snappy/BitShuffle.java#L107","tags":["x_refsource_MISC","x_transferred","Issue Tracking","web","report"]},{"url":"https://github.com/xerial/snappy-java/blob/master/src/main/java/org/xerial/snappy/BitShuffle.java","tags":["x_refsource_MISC","x_transferred","Issue Tracking","web","report"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2023-34453","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-pqr6-cmr2-h8hf"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/34xxx/CVE-2023-34453.json","tags":["advisory"]},{"url":"https://github.com/xerial/snappy-java","tags":["package"]},{"url":"https://ubuntu.com/security/CVE-2023-34453","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2023-34453","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2023-34453","title":"snappy-java's Integer Overflow vulnerability in shuffle leads to DoS","description":"snappy-java is a fast compressor/decompressor for Java. Due to unchecked multiplications, an integer overflow may occur in versions prior to 1.1.10.1, causing a fatal error.\n\nThe function `shuffle(int[] input)` in the file `BitShuffle.java` receives an array of integers and applies a bit shuffle on it. It does so by multiplying the length by 4 and passing it to the natively compiled shuffle function. Since the length is not tested, the multiplication by four can cause an integer overflow and become a smaller value than the true size, or even zero or negative. In the case of a negative value, a `java.lang.NegativeArraySizeException` exception will raise, which can crash the program. In a case of a value that is zero or too small, the code that afterwards references the shuffled array will assume a bigger size of the array, which might cause exceptions such as `java.lang.ArrayIndexOutOfBoundsException`.\n\nThe same issue exists also when using the `shuffle` functions that receive a double, float, long and short, each using a different multiplier that may cause the same issue.\n\nVersion 1.1.10.1 contains a patch for this vulnerability.","status":"published","published":"2023-06-15T16:12:34.119Z","modified":"2024-12-12T16:27:54.359Z","cvss":[{"version":"3.1","score":5.9,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"cna"}],"cwes":["CWE-190"],"updated_at":"2026-11-02T14:35:35.912488Z"}],"euvd":[{"id":"EUVD-2023-1858","description":"snappy-java is a fast compressor/decompressor for Java. Due to unchecked multiplications, an integer overflow may occur in versions prior to 1.1.10.1, causing a fatal error.\n\nThe function `shuffle(int[] input)` in the file `BitShuffle.java` receives an array of integers and applies a bit shuffle on it. It does so by multiplying the length by 4 and passing it to the natively compiled shuffle function. Since the length is not tested, the multiplication by four can cause an integer overflow and become a smaller value than the true size, or even zero or negative. In the case of a negative value, a `java.lang.NegativeArraySizeException` exception will raise, which can crash the program. In a case of a value that is zero or too small, the code that afterwards references the shuffled array will assume a bigger size of the array, which might cause exceptions such as `java.lang.ArrayIndexOutOfBoundsException`.\n\nThe same issue exists also when using the `shuffle` functions that receive a double, float, long and short, each using a different multiplier that may cause the same issue.\n\nVersion 1.1.10.1 contains a patch for this vulnerability.","status":"published","published":"2023-06-15T16:12:34Z","modified":"2024-12-12T16:27:54Z","cvss":[{"version":"3.1","score":5.9,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-03T00:04:36.024922Z"}],"ghsa":[{"id":"GHSA-pqr6-cmr2-h8hf","title":"snappy-java's Integer Overflow vulnerability in shuffle leads to DoS","description":"## Summary\nDue to unchecked multiplications, an integer overflow may occur, causing a fatal error.\n## Impact\nDenial of Service\n## Description\nThe function [shuffle(int[] input)](https://github.com/xerial/snappy-java/blob/05c39b2ca9b5b7b39611529cc302d3d796329611/src/main/java/org/xerial/snappy/BitShuffle.java#L107) in the file [BitShuffle.java](https://github.com/xerial/snappy-java/blob/master/src/main/java/org/xerial/snappy/BitShuffle.java) receives an array of integers and applies a bit shuffle on it. It does so by multiplying the length by 4 and passing it to the natively compiled shuffle function.\n\n```java\npublic static byte[] shuffle(int[] input) throws IOException {\n        byte[] output = new byte[input.length * 4];\n        int numProcessed = impl.shuffle(input, 0, 4, input.length * 4, output, 0);\n        assert(numProcessed == input.length * 4);\n        return output;\n    }\n\n```\n\nSince the length is not tested, the multiplication by four can cause an integer overflow and become a smaller value than the true size, or even zero or negative. In the case of a negative value, a “java.lang.NegativeArraySizeException” exception will raise, which can crash the program. In a case of a value that is zero or too small, the code that afterwards references the shuffled array will assume a bigger size of the array, which might cause exceptions such as “java.lang.ArrayIndexOutOfBoundsException”.\nThe same issue exists also when using the “shuffle” functions that receive a double, float, long and short, each using a different multiplier that may cause the same issue.\n\n## Steps To Reproduce\nCompile and run the following code:\n\n```java\npackage org.example;\nimport org.xerial.snappy.BitShuffle;\n\nimport java.io.*;\n\n\npublic class Main {\n\n    public static void main(String[] args) throws IOException {\n        int[] original = new int[0x40000000];\n        byte[] shuffled = BitShuffle.shuffle(original);\n        System.out.println(shuffled[0]);\n    }\n}\n\n```\nThe program will crash, showing the following error (or similar):\n\n```\nException in thread \"main\" java.lang.ArrayIndexOutOfBoundsException: Index 0 out of bounds for length 0\n\tat org.example.Main.main(Main.java:12)\n\nProcess finished with exit code 1\n\n```\n\nAlternatively - compile and run the following code:\n\n```java\npackage org.example;\nimport org.xerial.snappy.BitShuffle;\n\nimport java.io.*;\n\n\npublic class Main {\n\n    public static void main(String[] args) throws IOException {\n        int[] original = new int[0x20000000];\n        byte[] shuffled = BitShuffle.shuffle(original);\n    }\n}\n\n```\nThe program will crash with the following error (or similar):\n\n```\nException in thread \"main\" java.lang.NegativeArraySizeException: -2147483648\n\tat org.xerial.snappy.BitShuffle.shuffle(BitShuffle.java:108)\n\tat org.example.Main.main(Main.java:11)\n```","status":"published","published":"2023-06-15T16:13:20Z","modified":"2023-11-08T05:03:06Z","cvss":[{"version":"3.1","score":5.9,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"cwes":["CWE-190"],"updated_at":"2026-11-02T14:37:16.721714Z"}],"nvd":[{"id":"CVE-2023-34453","description":"snappy-java is a fast compressor/decompressor for Java. Due to unchecked multiplications, an integer overflow may occur in versions prior to 1.1.10.1, causing a fatal error.\n\nThe function `shuffle(int[] input)` in the file `BitShuffle.java` receives an array of integers and applies a bit shuffle on it. It does so by multiplying the length by 4 and passing it to the natively compiled shuffle function. Since the length is not tested, the multiplication by four can cause an integer overflow and become a smaller value than the true size, or even zero or negative. In the case of a negative value, a `java.lang.NegativeArraySizeException` exception will raise, which can crash the program. In a case of a value that is zero or too small, the code that afterwards references the shuffled array will assume a bigger size of the array, which might cause exceptions such as `java.lang.ArrayIndexOutOfBoundsException`.\n\nThe same issue exists also when using the `shuffle` functions that receive a double, float, long and short, each using a different multiplier that may cause the same issue.\n\nVersion 1.1.10.1 contains a patch for this vulnerability.","status":"published","published":"2023-06-15T17:15:09.79Z","modified":"2026-06-17T06:03:41.027Z","cvss":[{"version":"3.1","score":5.9,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"secondary"},{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"primary"}],"cwes":["CWE-190"],"updated_at":"2026-11-02T14:08:06.335469Z"}],"osv":[{"id":"CVE-2023-34453","title":"snappy-java's Integer Overflow vulnerability in shuffle leads to DoS","description":"snappy-java is a fast compressor/decompressor for Java. Due to unchecked multiplications, an integer overflow may occur in versions prior to 1.1.10.1, causing a fatal error.\n\nThe function `shuffle(int[] input)` in the file `BitShuffle.java` receives an array of integers and applies a bit shuffle on it. It does so by multiplying the length by 4 and passing it to the natively compiled shuffle function. Since the length is not tested, the multiplication by four can cause an integer overflow and become a smaller value than the true size, or even zero or negative. In the case of a negative value, a `java.lang.NegativeArraySizeException` exception will raise, which can crash the program. In a case of a value that is zero or too small, the code that afterwards references the shuffled array will assume a bigger size of the array, which might cause exceptions such as `java.lang.ArrayIndexOutOfBoundsException`.\n\nThe same issue exists also when using the `shuffle` functions that receive a double, float, long and short, each using a different multiplier that may cause the same issue.\n\nVersion 1.1.10.1 contains a patch for this vulnerability.","status":"published","published":"2023-06-15T16:12:34.119Z","modified":"2026-10-28T10:38:52.678666046Z","cvss":[{"version":"3.1","score":5.9,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"cwes":["CWE-190"],"updated_at":"2026-11-02T15:44:32.116263Z"},{"id":"GHSA-pqr6-cmr2-h8hf","title":"snappy-java's Integer Overflow vulnerability in shuffle leads to DoS","description":"## Summary\nDue to unchecked multiplications, an integer overflow may occur, causing a fatal error.\n## Impact\nDenial of Service\n## Description\nThe function [shuffle(int[] input)](https://github.com/xerial/snappy-java/blob/05c39b2ca9b5b7b39611529cc302d3d796329611/src/main/java/org/xerial/snappy/BitShuffle.java#L107) in the file [BitShuffle.java](https://github.com/xerial/snappy-java/blob/master/src/main/java/org/xerial/snappy/BitShuffle.java) receives an array of integers and applies a bit shuffle on it. It does so by multiplying the length by 4 and passing it to the natively compiled shuffle function.\n\n```java\npublic static byte[] shuffle(int[] input) throws IOException {\n        byte[] output = new byte[input.length * 4];\n        int numProcessed = impl.shuffle(input, 0, 4, input.length * 4, output, 0);\n        assert(numProcessed == input.length * 4);\n        return output;\n    }\n\n```\n\nSince the length is not tested, the multiplication by four can cause an integer overflow and become a smaller value than the true size, or even zero or negative. In the case of a negative value, a “java.lang.NegativeArraySizeException” exception will raise, which can crash the program. In a case of a value that is zero or too small, the code that afterwards references the shuffled array will assume a bigger size of the array, which might cause exceptions such as “java.lang.ArrayIndexOutOfBoundsException”.\nThe same issue exists also when using the “shuffle” functions that receive a double, float, long and short, each using a different multiplier that may cause the same issue.\n\n## Steps To Reproduce\nCompile and run the following code:\n\n```java\npackage org.example;\nimport org.xerial.snappy.BitShuffle;\n\nimport java.io.*;\n\n\npublic class Main {\n\n    public static void main(String[] args) throws IOException {\n        int[] original = new int[0x40000000];\n        byte[] shuffled = BitShuffle.shuffle(original);\n        System.out.println(shuffled[0]);\n    }\n}\n\n```\nThe program will crash, showing the following error (or similar):\n\n```\nException in thread \"main\" java.lang.ArrayIndexOutOfBoundsException: Index 0 out of bounds for length 0\n\tat org.example.Main.main(Main.java:12)\n\nProcess finished with exit code 1\n\n```\n\nAlternatively - compile and run the following code:\n\n```java\npackage org.example;\nimport org.xerial.snappy.BitShuffle;\n\nimport java.io.*;\n\n\npublic class Main {\n\n    public static void main(String[] args) throws IOException {\n        int[] original = new int[0x20000000];\n        byte[] shuffled = BitShuffle.shuffle(original);\n    }\n}\n\n```\nThe program will crash with the following error (or similar):\n\n```\nException in thread \"main\" java.lang.NegativeArraySizeException: -2147483648\n\tat org.xerial.snappy.BitShuffle.shuffle(BitShuffle.java:108)\n\tat org.example.Main.main(Main.java:11)\n```","status":"published","published":"2023-06-15T16:13:20Z","modified":"2026-09-10T03:50:08.421776299Z","cvss":[{"version":"3.1","score":5.9,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"cwes":["CWE-190"],"updated_at":"2026-11-02T15:46:53.700556Z"},{"id":"ROOT-APP-MAVEN-CVE-2023-34453","title":"CVE-2023-34453 in io.root.org.xerial.snappy:snappy-java - Patched by Root","description":"Root has patched CVE-2023-34453 in the io.root.org.xerial.snappy:snappy-java package for Root:Maven. Multiple fixed versions available.","status":"withdrawn","published":"2026-06-18T10:30:51Z","modified":"2026-07-29T08:00:22.537750888Z","cvss":[{"version":"3.1","score":5.9,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-02T15:53:27.066589Z"},{"id":"UBUNTU-CVE-2023-34453","description":"snappy-java is a fast compressor/decompressor for Java. Due to unchecked multiplications, an integer overflow may occur in versions prior to 1.1.10.1, causing a fatal error. The function `shuffle(int[] input)` in the file `BitShuffle.java` receives an array of integers and applies a bit shuffle on it. It does so by multiplying the length by 4 and passing it to the natively compiled shuffle function. Since the length is not tested, the multiplication by four can cause an integer overflow and become a smaller value than the true size, or even zero or negative. In the case of a negative value, a `java.lang.NegativeArraySizeException` exception will raise, which can crash the program. In a case of a value that is zero or too small, the code that afterwards references the shuffled array will assume a bigger size of the array, which might cause exceptions such as `java.lang.ArrayIndexOutOfBoundsException`. The same issue exists also when using the `shuffle` functions that receive a double, float, long and short, each using a different multiplier that may cause the same issue. Version 1.1.10.1 contains a patch for this vulnerability.","status":"published","published":"2023-06-15T17:15:00Z","modified":"2026-10-17T12:57:19.290017392Z","cvss":[{"version":"3.1","score":5.9,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"medium"},{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T16:54:21.882004Z"},{"id":"CLSA-2024-1732492826","title":"TuxCare security update for org.xerial.snappy:snappy-java (4 CVEs)","description":"TuxCare rebuilt org.xerial.snappy:snappy-java to address 4 CVEs. Fixed in 1.1.8.4.tuxcare.","status":"published","published":"2026-08-04T14:52:03Z","modified":"2026-10-15T09:45:05.55838129Z","updated_at":"2026-11-02T15:43:41.281406Z"}]}}