Vulnerability identifier: #VU69349

Vulnerability risk: Low

CVSSv3.1: 2.9 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-46195

CWE-ID: CWE-674

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
Gnu Compiler Collection
Client/Desktop applications / Software for system administration

Vendor: GNU

Description

The vulnerability allows an attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to uncontrolled recursion in the libiberty/rust-demangle.c component. An attacker with ability to pass specially crafted input to the GCC application can consume excessive CPU and memory resources and perform a denial of service (DoS) attack.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Gnu Compiler Collection: 12.0.0

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External links
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=103841

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Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

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