Improper access control in libvirt (Alpine package)



Risk Low
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2019-10161
CWE-ID CWE-284
Exploitation vector Local
Public exploit N/A
Vulnerable software
 libvirt (Alpine package)
Operating systems & Components / Operating system package or component

Vendor Alpine Linux Development Team

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) Improper access control

EUVDB-ID: #VU18879

Risk: Low

CVSSv4.0: 5.9 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2019-10161

CWE-ID: CWE-284 - Improper Access Control

Exploit availability: No

Description

The vulnerability allows a remote attacker to gain unauthorized access to sensitive information.

The vulnerability exists due to improper access restrictions in libvirtd that allow read-only clients to use the virDomainSaveImageGetXMLDesc() API. A local user with read-only access to the libvirtd socket can confirm presence of arbitrary files on the system, trigger denial of service condition or execute arbitrary applications on the affected system.

Mitigation

Install update from vendor's website.

Vulnerable software versions

libvirt (Alpine package): 3.9.0-r1 - 5.4.0-r0

CPE2.3 External links

https://git.alpinelinux.org/aports/commit/?id=0a50437d8b8d5a583b96d5807d95e6b549772ba3
https://git.alpinelinux.org/aports/commit/?id=1d40d3f92f355ffcb43aad049e0a560d60d31e16
https://git.alpinelinux.org/aports/commit/?id=011b9d5c5ae0af504ab1bb28a042d56676636a00
https://git.alpinelinux.org/aports/commit/?id=8cad441d0bb3d51026cb0231485848ce9a821e6a
https://git.alpinelinux.org/aports/commit/?id=911332961e1fa7187cf3869595066bb18d226e27
https://git.alpinelinux.org/aports/commit/?id=2d0114c907c5b85d78a75d70bd60c5544ed8eedb
https://git.alpinelinux.org/aports/commit/?id=d8c86688b6afbadd18a78b88a430ed4cabe78e7c


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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