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Advisories

PyMuPDF 1.25.3 before 2.0 Stack Buffer Overflow via add_freetext_annot() Callout

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Severity
high
Date
Affecting

  • PyMuPDF >= 1.25.3, < 2.0

CWE
  • CWE-121 Stack-based Buffer Overflow
CVSS
7.7
CVSS V4 Vector
CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Credit
k3rn3lbr3ach3r, Dilanka Kaushal Hewage (r3vpwnx)
Description
PyMuPDF 1.25.3 before 2.0 contains a stack-based buffer overflow vulnerability in JM_set_annot_callout_line() that copies a caller-supplied number of callout points into a fixed three-element stack array. Attackers who control the callout argument passed to Page.add_freetext_annot() can supply four or more points to overwrite the stack frame, crashing the process or executing code.

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