yawkat LZ4 Java provides LZ4 compression for Java. Prior to 1.11.4, net.jpountz.lz4.LZ4BlockInputStream configured with stopOnEmptyBlock set to false handles each well-formed empty LZ4Block by recursively calling refill(), allowing a long sequence of empty blocks in an attacker-controlled compressed stream to exhaust the decoding thread's stack and throw StackOverflowError. The default stopOnEmptyBlock setting is true and is not affected, and the issue does not cause memory corruption.
This issue is fixed in version 1.11.4.
Attack Parameters
Attack Vector
Network
Can be exploited remotely
Attack Complexity
High
Difficult to exploit
Privileges Required
None
No privileges needed
User Interaction
None
No user interaction needed
Impact Assessment
Confidentiality
None
No data leak
Integrity
None
No data modification
Availability
Low
Partial disruption
CVSS Vector v3.1
Weakness Type (CWE)
References 3
https://github.com/yawkat/lz4-java/commit/c8ebf97d504fb34434fda46fc761e8202570e…
security-advisories@github.com
https://github.com/yawkat/lz4-java/releases/tag/v1.11.4
security-advisories@github.com
https://github.com/yawkat/lz4-java/security/advisories/GHSA-343h-94h5-c4wr
security-advisories@github.com