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Advisories

Poppler 0.42.0 through 26.10.0 Stack Buffer Overflow via Decrypt::revision6Hash()

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severity
high
date
Affecting

  • poppler >= 0.42.0, <= 26.10.0

CWE
  • CWE-121 Stack-based Buffer Overflow
CVSS
8.3
CVSS V4 Vector
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N
Credit
Aziz Elbelaychy (Ostorlab)
Description
Poppler 0.42.0 through 26.10.0 contains a stack-based buffer overflow in Decrypt::revision6Hash() that allows attackers controlling the password to overwrite stack memory when opening AESV3/R6 encrypted PDFs. Attackers can supply a password longer than 127 bytes through applications using the libpoppler, libpoppler-glib or C++ API to overflow the K1 and E buffers, crashing the process or corrupting memory.

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