Information Exposure Through an Error Message in Gnu Compiler Collection - CVE-2018-12886

Vulnerability identifier: #VU73785

CSH Severity: Medium

CVSS v4: 8.2 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N]

CVE-ID: CVE-2018-12886

CWE-ID: CWE-209

Exploitation vector: Remote access

Exploit availability: No public exploit available

The vulnerability allows a remote attacker to gain access to potentially sensitive information.

The vulnerability exists due to excessive data output by the application in the stack_protect_prologue in cfgexpand.c and stack_protect_epilogue in function.c. A remote attacker can gain unauthorized access to sensitive information on the system.

Gnu Compiler Collection
SCALANCE WAM763-1
SCALANCE WAM766-1 (EU)
SCALANCE WAM766-1 (US)
SCALANCE WAM766-1 EEC (EU)
SCALANCE WAM766-1 EEC (US)
SCALANCE WUM763-1
SCALANCE WUM766-1 (EU)
SCALANCE WUM766-1 (US)

Install updates from vendor's website.

Gnu Compiler Collection - update to 9.1.0
SCALANCE WAM763-1 - update to 2.0
SCALANCE WAM766-1 (EU) - update to 2.0
SCALANCE WAM766-1 (US) - update to 2.0
SCALANCE WAM766-1 EEC (EU) - update to 2.0
SCALANCE WAM766-1 EEC (US) - update to 2.0
SCALANCE WUM763-1 - update to 2.0
SCALANCE WUM766-1 (EU) - update to 2.0
SCALANCE WUM766-1 (US) - update to 2.0

• 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

• Information disclosure in GNU Compiler Collection
• Multiple vulnerabilities in Siemens SCALANCE W-700 IEEE 802.11ax devices