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.

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.

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Please visit https://www.tenable.com/products/tenable-ot for more information.

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - 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. (CVE-2018-12886)

Note that Nessus relies on the presence of the package as reported by the vendor.

According to the versions of the gcc packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities :

  - The gcc package contains the GNU Compiler Collection     version 4.8.You'll need this package in order to     compile C code.

  - Security fix(es):

  - 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.(CVE-2018-12886)

Note that Tenable Network Security has extracted the preceding description block directly from the EulerOS security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

ID	Name	Product	Family	Severity
504085	Siemens SIMATIC S7-1500 Generation of Error Message Containing Sensitive Information (CVE-2018-12886)	Tenable OT Security	Tenable.ot	high
261039	Linux Distros Unpatched Vulnerability : CVE-2018-12886	Nessus	Misc.	high
128194	EulerOS 2.0 SP8 : gcc (EulerOS-SA-2019-1825)	Nessus	Huawei Local Security Checks	high

Detections

Analytics

CVE-2018-12886

high

Tenable Plugins

high

high

high