#VU32665 Permissions, Privileges, and Access Controls in QEMU - CVE-2013-2007

Vulnerability identifier: #VU32665

Vulnerability risk: Low

CVSSv4.0: 6.1 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2013-2007

CWE-ID: CWE-264

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
QEMU
Client/Desktop applications / Virtualization software

Vendor: QEMU

Description

The vulnerability allows a local non-authenticated attacker to execute arbitrary code.

The qemu guest agent in Qemu 1.4.1 and earlier, as used by Xen, when started in daemon mode, uses weak permissions for certain files, which allows local users to read and write to these files.

Mitigation
Install update from vendor's website.

Vulnerable software versions

QEMU: 3.1.3

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External links
https://git.qemu.org/?p=qemu.git;a=commit;h=c689b4f1bac352dcfd6ecb9a1d45337de0f1de67
https://lists.opensuse.org/opensuse-updates/2013-07/msg00057.html
https://osvdb.org/93032
https://rhn.redhat.com/errata/RHSA-2013-0791.html
https://rhn.redhat.com/errata/RHSA-2013-0896.html
https://secunia.com/advisories/53325
https://www.openwall.com/lists/oss-security/2013/05/06/5
https://www.securityfocus.com/bid/59675
https://www.securitytracker.com/id/1028521
https://bugzilla.redhat.com/show_bug.cgi?id=956082
https://exchange.xforce.ibmcloud.com/vulnerabilities/84047

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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.