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Advisories

msgpack-java through 0.9.12 Integer Overflow via MAP32

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severity
medium
date
Affecting

  • msgpack-java <= 0.9.12

CWE
  • CWE-190 Integer Overflow or Wraparound
CVSS
6.9
CVSS V4 Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N
Credit
Wayde Shi (PayPal Cyber Security Team)
Description
msgpack-java through 0.9.12 contains an integer overflow vulnerability in MessageUnpacker.skipValue() when processing MAP32 containers with large element counts. Attackers can supply a MAP32 element count at or above 0x40000000 that wraps when doubled, causing the parser cursor to desynchronize and attacker-controlled data to be returned in place of later fields.

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