Input validation error in FreeBSD



Published: 2013-11-21 | Updated: 2020-08-10
Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2013-6834
CWE-ID CWE-20
Exploitation vector Network
Public exploit N/A
Vulnerable software
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FreeBSD
Operating systems & Components / Operating system

Vendor FreeBSD Foundation

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) Input validation error

EUVDB-ID: #VU42346

Risk: Medium

CVSSv3.1: 5.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2013-6834

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a remote non-authenticated attacker to gain access to sensitive information.

The ql_eioctl function in sys/dev/qlxgbe/ql_ioctl.c in the kernel in FreeBSD 10 and earlier does not validate a certain size parameter, which allows local users to obtain sensitive information from kernel memory via a crafted ioctl call.

Mitigation

Install update from vendor's website.

Vulnerable software versions

FreeBSD: 0.4_1 - 9.2

External links

http://archives.neohapsis.com/archives/fulldisclosure/2013-11/0107.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.



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