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Security Advisories

CVE-2018-12886

NVD

https://nvd.nist.gov/vuln/detail/CVE-2018-12886

Severity

8.1

High

CVSS V3

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Description

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://nvd.nist.gov/vuln/detail/CVE-2018-12886
  • https://github.com/advisories/GHSA-5mwp-7q9c-cgg2
  • https://images.chainguard.dev/security/
  • https://gcc.gnu.org/viewcvs/gcc/trunk/gcc/config/arm/arm-protos.h?revision=266379&view=markup
  • https://www.gnu.org/software/gcc/gcc-8/changes.html

Affected packages

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