Information disclosure in GNU Compiler Collection

1) Information Exposure Through an Error Message

EUVDB-ID: #VU73785

Risk: Medium

CVSSv4.0: 4.6 [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/E:U/U:Green]

CVE-ID: CVE-2018-12886

CWE-ID: CWE-209 - Information Exposure Through an Error Message

Exploit availability: No

Description

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.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Gnu Compiler Collection: 4.1.0 - 8.5.0

CPE2.3

• cpe:2.3:a:gnu:gcc:4.1.0:*:*:*:*:*:*:*
• cpe:2.3:a:gnu:gcc:4.1.1:*:*:*:*:*:*:*
• cpe:2.3:a:gnu:gcc:4.1.2:*:*:*:*:*:*:*

External links

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

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.