CVE-2015-8701

medium
New! CVE Severity Now Using CVSS v3

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Description

QEMU (aka Quick Emulator) built with the Rocker switch emulation support is vulnerable to an off-by-one error. It happens while processing transmit (tx) descriptors in 'tx_consume' routine, if a descriptor was to have more than allowed (ROCKER_TX_FRAGS_MAX=16) fragments. A privileged user inside guest could use this flaw to cause memory leakage on the host or crash the QEMU process instance resulting in DoS issue.

References

http://www.openwall.com/lists/oss-security/2015/12/28/6

http://www.openwall.com/lists/oss-security/2015/12/29/1

http://www.securityfocus.com/bid/79706

https://bugzilla.redhat.com/show_bug.cgi?id=1286971

https://lists.gnu.org/archive/html/qemu-devel/2015-12/msg04629.html

https://security.gentoo.org/glsa/201602-01

Details

Source: MITRE

Published: 2016-12-29

Updated: 2020-11-10

Type: CWE-193

Risk Information

CVSS v2

Base Score: 2.1

Vector: AV:L/AC:L/Au:N/C:N/I:N/A:P

Impact Score: 2.9

Exploitability Score: 3.9

Severity: LOW

CVSS v3

Base Score: 6.5

Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H

Impact Score: 4

Exploitability Score: 2

Severity: MEDIUM

Vulnerable Software

Configuration 1

OR

cpe:2.3:a:qemu:qemu:*:*:*:*:*:*:*:* versions up to 2.5.1.1 (inclusive)

Tenable Plugins

View all (3 total)

IDNameProductFamilySeverity
89526Fedora 23 : qemu-2.4.1-6.fc23 (2016-42778e8c82)NessusFedora Local Security Checks
high
88587GLSA-201602-01 : QEMU: Multiple vulnerabilities (Venom)NessusGentoo Local Security Checks
critical
87686FreeBSD : qemu -- denial of service vulnerability in Rocker switch emulation (1384f2fd-b1be-11e5-9728-002590263bf5)NessusFreeBSD Local Security Checks
medium