CVE-2018-12886
First published: Wed May 22 2019(Updated: )
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.
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| GNU GCC | >=4.1<=8.0 |
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Reference Links
Frequently Asked Questions
What is CVE-2018-12886?
CVE-2018-12886 is a vulnerability in the GNU Compiler Collection (GCC) that affects versions 4.1 through 8.
What is the severity of CVE-2018-12886?
The severity of CVE-2018-12886 is high with a CVSS score of 8.1.
How does CVE-2018-12886 impact ARM targets?
CVE-2018-12886 generates instruction sequences that spill the address of the stack protector guard on ARM targets, allowing an attacker to bypass protection.
Which software is affected by CVE-2018-12886?
GNU GCC versions 4.1 through 8 are affected by CVE-2018-12886.
How can I mitigate CVE-2018-12886?
Upgrade to a version of GNU GCC that is not affected by CVE-2018-12886 or apply any available patches provided by the vendor.
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