Описание
snappy-java is a fast compressor/decompressor for Java. Due to use of an unchecked chunk length, an unrecoverable fatal error can occur in versions prior to 1.1.10.1.
The code in the function hasNextChunk in the fileSnappyInputStream.java checks if a given stream has more chunks to read. It does that by attempting to read 4 bytes. If it wasn’t possible to read the 4 bytes, the function returns false. Otherwise, if 4 bytes were available, the code treats them as the length of the next chunk.
In the case that the compressed variable is null, a byte array is allocated with the size given by the input data. Since the code doesn’t test the legality of the chunkSize variable, it is possible to pass a negative number (such as 0xFFFFFFFF which is -1), which will cause the code to raise a java.lang.NegativeArraySizeException exception. A worse case would happen when passing a huge positive value (such as 0x7FFFFFFF), which would raise the fatal java.lang.OutOfMemoryError error.
Version 1.1.10.1 contains a patch for this issue.
A flaw was found in Snappy-java's fileSnappyInputStream hasNextChunk function, which does not sufficiently evaluate input bytes before beginning operations. This issue could allow an attacker to send malicious input to trigger an out of memory error that crashes the program, resulting in a denial of service.
Затронутые пакеты
| Платформа | Пакет | Состояние | Рекомендация | Релиз |
|---|---|---|---|---|
| A-MQ Clients 2 | snappy-java | Not affected | ||
| Logging Subsystem for Red Hat OpenShift | openshift-logging/elasticsearch6-rhel8 | Not affected | ||
| OpenShift Serverless | snappy-java | Will not fix | ||
| Red Hat build of Debezium 1 | snappy-java | Affected | ||
| Red Hat build of Debezium 2 | snappy-java | Affected | ||
| Red Hat build of OptaPlanner 8 | snappy-java | Affected | ||
| Red Hat Data Grid 8 | snappy-java | Not affected | ||
| Red Hat Decision Manager 7 | snappy-java | Will not fix | ||
| Red Hat Enterprise Linux 8 | log4j:2/log4j | Will not fix | ||
| Red Hat Enterprise Linux 9 | log4j | Will not fix |
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Дополнительная информация
Статус:
EPSS
5.9 Medium
CVSS3
Связанные уязвимости
snappy-java is a fast compressor/decompressor for Java. Due to use of an unchecked chunk length, an unrecoverable fatal error can occur in versions prior to 1.1.10.1. The code in the function hasNextChunk in the fileSnappyInputStream.java checks if a given stream has more chunks to read. It does that by attempting to read 4 bytes. If it wasn’t possible to read the 4 bytes, the function returns false. Otherwise, if 4 bytes were available, the code treats them as the length of the next chunk. In the case that the `compressed` variable is null, a byte array is allocated with the size given by the input data. Since the code doesn’t test the legality of the `chunkSize` variable, it is possible to pass a negative number (such as 0xFFFFFFFF which is -1), which will cause the code to raise a `java.lang.NegativeArraySizeException` exception. A worse case would happen when passing a huge positive value (such as 0x7FFFFFFF), which would raise the fatal `java.lang.OutOfMemoryError` error. V...
snappy-java is a fast compressor/decompressor for Java. Due to use of an unchecked chunk length, an unrecoverable fatal error can occur in versions prior to 1.1.10.1. The code in the function hasNextChunk in the fileSnappyInputStream.java checks if a given stream has more chunks to read. It does that by attempting to read 4 bytes. If it wasn’t possible to read the 4 bytes, the function returns false. Otherwise, if 4 bytes were available, the code treats them as the length of the next chunk. In the case that the `compressed` variable is null, a byte array is allocated with the size given by the input data. Since the code doesn’t test the legality of the `chunkSize` variable, it is possible to pass a negative number (such as 0xFFFFFFFF which is -1), which will cause the code to raise a `java.lang.NegativeArraySizeException` exception. A worse case would happen when passing a huge positive value (such as 0x7FFFFFFF), which would raise the fatal `java.lang.OutOfMemoryError` error. V
snappy-java's unchecked chunk length leads to DoS
Уязвимость функции hasNextChunk библиотеки быстрого сжатия/распаковки snappy-java, позволяющая нарушителю вызвать отказ в обслуживании
EPSS
5.9 Medium
CVSS3