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mercredi 22 mai 2019

GNU gcc up to 8 ARM cfgexpand.c stack_protect_prologue privilege escalation

A vulnerability, which was classified as critical, was found in GNU gcc up to 8. This affects the function stack_protect_prologue of the file cfgexpand.c of the component ARM Handler. The manipulation with an unknown input leads to a privilege escalation vulnerability (Stack-based). CWE is classifying the issue as CWE-269. This is going to have an impact on confidentiality, integrity, and availability.

The weakness was disclosed 05/22/2019. It is possible to read the advisory at gcc.gnu.org. This vulnerability is uniquely identified as CVE-2018-12886 since 06/26/2018. The exploitability is told to be difficult. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Technical details of the vulnerability are known, but there is no available exploit. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 05/23/2019).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

Product

Vendor

Name

CPE 2.3

🔒

CPE 2.2

🔒

CVSSv3

VulDB Meta Base Score: 5.6
VulDB Meta Temp Score: 5.6

VulDB Base Score: 5.6
VulDB Temp Score: 5.6
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2

VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploiting

Class: Privilege escalation / Stack-based (CWE-269)
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

Price Prediction: 🔍
Current Price Estimation: 🔒