Input validation error in libffi lvm2



| Updated: 2020-08-08
Risk Low
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2020-8991
CWE-ID CWE-20
Exploitation vector Local
Public exploit N/A
Vulnerable software
 lvm2
Other software / Other software solutions

Vendor libffi

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) Input validation error

EUVDB-ID: #VU34823

Risk: Low

CVSSv4.0: 1 [CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2020-8991

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a local privileged user to perform service disruption.

** DISPUTED ** vg_lookup in daemons/lvmetad/lvmetad-core.c in LVM2 2.02 mismanages memory, leading to an lvmetad memory leak, as demonstrated by running pvs. NOTE: RedHat disputes CVE-2020-8991 as not being a vulnerability since there’s no apparent route to either privilege escalation or to denial of service through the bug.

Mitigation

Install update from vendor's website.

Vulnerable software versions

lvm2: 2.02.00

CPE2.3 External links

https://sourceware.org/git/?p=lvm2.git;a=commit;h=bcf9556b8fcd16ad8997f80cc92785f295c66701


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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