Information Exposure Affecting gcc-7 package, versions *
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-UBUNTU2004-GCC7-1192798
- published31 Aug 2023
- disclosed22 May 2019
Introduced: 22 May 2019
CVE-2018-12886 (opens in a new tab)How to fix?
There is no fixed version for Ubuntu:20.04 gcc-7.
NVD Description
Note: Versions mentioned in the description apply only to the upstream gcc-7 package and not the gcc-7 package as distributed by Ubuntu.
See How to fix? for Ubuntu:20.04 relevant fixed versions and status.
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
- http://people.ubuntu.com/~ubuntu-security/cve/CVE-2018-12886
- 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
- https://cert-portal.siemens.com/productcert/html/ssa-398330.html
- https://cert-portal.siemens.com/productcert/html/ssa-565386.html