CVE-2018-12886

8.1HIGH

Key Information:

Vendor
Gnu
Status
Gcc
Vendor
CVE Published:
22 May 2019

Summary

stack_protect_prologue in cfgexpand.c and stack_protect_epilogue in function.c in GNU Compiler Collection (GCC) 4.1 through 8 (under certain circumstances) generate instruction sequences when targeting ARM targets that spill the address of the stack protector guard, which allows an attacker to bypass the protection of -fstack-protector, -fstack-protector-all, -fstack-protector-strong, and -fstack-protector-explicit against stack overflow by controlling what the stack canary is compared against.

References

https://www.gnu.org/software/gcc/gcc-8/changes.html
x_refsource_MISC
https://gcc.gnu.org/viewcvs/gcc/trunk/gcc/config/arm/arm-...
x_refsource_CONFIRM

CVSS V3.1

Score:
8.1
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
High
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.