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Advisories

OW2 ASM 3.0 before 9.11 Excessive Memory Allocation via Multiple RET Instructions

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Severity
medium
Date
Affecting

  • ASM >= 3.0, < 9.11

CWE
  • CWE-789 Memory Allocation with Excessive Size Value
CVSS
6.8
CVSS V4 Vector
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
Credit
Eric Bruneton
Description
OW2 ASM 3.0 before 9.11 contains an excessive memory allocation vulnerability in Label.addSubroutineRetSuccessors() that fails to enforce the single-RET-per-JSR rule. Attackers can supply a crafted invalid class file with multiple RET instructions for one JSR, triggering a roughly 2 GB allocation that crashes the JVM.

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