Denial of service in GNU Bison



Published: 2020-06-15 | Updated: 2020-09-01
Risk Low
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2020-14150
CWE-ID CWE-20
Exploitation vector Local
Public exploit N/A
Vulnerable software
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GNU Bison
Other software / Other software solutions

Vendor GNU

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) Input validation error

EUVDB-ID: #VU46196

Risk: Low

CVSSv3.1: 4.8 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-14150

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a local user to perform a denial of service (DoS) attack.

The vulnerability exists due to insufficient validation of user-supplied input. A local user can pass specially crafted input to the application and perform a denial of service (DoS) attack.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

GNU Bison: 3.5 - 3.5.3

External links

http://bugs.gentoo.org/717936
http://lists.gnu.org/archive/html/info-gnu/2020-04/msg00000.html


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.



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