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Advisories

OpenSC < 0.27.0 Buffer Overrun in do_key_value() via profile.c

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severity
low
date
Affecting

  • OpenSC < 0.27.0

  • OpenSC < 0358817

CWE
  • CWE-121 Stack-based Buffer Overflow
  • CWE-122 Heap-based Buffer Overflow
CVSS
1
CVSS V4 Vector
CVSS:4.0/AV:P/AC:H/AT:N/PR:N/UI:P/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N
References
Credit
Nicholas Carlini of Anthropic
Description
OpenSC before 0.27.0, fixed in commit 0358817, contains a stack and heap buffer overrun vulnerability in the do_key_value() function in src/pkcs15init/profile.c that allows attackers to corrupt memory by supplying a crafted profile configuration file. During pkcs15-init invocation, a key value entry beginning with '=' followed by more than sizeof(keybuf) characters is copied into keybuf via memcpy without a length check, causing both stack and heap buffer overruns.

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