Fabrice Bellard QEMU CAP_SYS_RAWIO memory corruption

CVSS Meta Temp Score
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CTI Interest Score
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7.6$0-$5k0.00

A vulnerability was found in Fabrice Bellard QEMU (Virtualization Software) (the affected version unknown) and classified as critical. Affected by this issue is the function CAP_SYS_RAWIO. The manipulation with an unknown input leads to a memory corruption vulnerability. Using CWE to declare the problem leads to CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. Impacted is confidentiality, integrity, and availability.

The weakness was disclosed 01/28/2016 by Donghai Zhu as Bug 1296060 as confirmed bug report (Bugzilla). The advisory is available at bugzilla.redhat.com. This vulnerability is handled as CVE-2016-1714 since 01/12/2016. The exploitation is known to be easy. Local access is required to approach this attack. A simple authentication is necessary for exploitation. Technical details are known, but there is no available exploit.

The vulnerability scanner Nessus provides a plugin with the ID 88506 (RHEL 6 : qemu-kvm-rhev (RHSA-2016:0081)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Red Hat Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 168962 (OpenSuSE Security Update for qemu (openSUSE-SU-2016:1750-1)).

Applying a patch is able to eliminate this problem. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (110305) and Tenable (88506). lists.gnu.org is providing further details. The entries 80761, 94718, 94719 and 94720 are pretty similar.

Productinfo

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CPE 2.3info

CPE 2.2info

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CVSSv3info

VulDB Meta Base Score: 8.1
VulDB Meta Temp Score: 7.6

VulDB Base Score: 8.1
VulDB Temp Score: 7.1
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VulDB Reliability: 🔍

NVD Base Score: 8.1
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CVSSv2info

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Exploitinginfo

Class: Memory corruption
CWE: CWE-119
ATT&CK: Unknown

Local: Yes
Remote: No

Availability: 🔍
Status: Unproven

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Nessus ID: 88506
Nessus Name: RHEL 6 : qemu-kvm-rhev (RHSA-2016:0081)
Nessus File: 🔍
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OpenVAS ID: 80056
OpenVAS Name: Oracle Linux Local Check: ELSA-2016-0082
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Threat Intelligenceinfo

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Countermeasuresinfo

Recommended: Patch
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Timelineinfo

01/11/2016 🔍
01/11/2016 +0 days 🔍
01/12/2016 +1 days 🔍
01/28/2016 +16 days 🔍
01/28/2016 +0 days 🔍
01/29/2016 +1 days 🔍
02/01/2016 +3 days 🔍
02/02/2016 +1 days 🔍
04/07/2016 +65 days 🔍
07/06/2022 +2281 days 🔍

Sourcesinfo

Vendor: bellard.org

Advisory: Bug 1296060
Researcher: Donghai Zhu
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2016-1714 (🔍)
X-Force: 110305 - QEMU CAP_SYS_RAWIO privilege escalation
SecurityTracker: 1034858
Vulnerability Center: 56266 - Qemu Remote Code Execution or DoS due to Out-Of-Bound Flaw, Medium
SecurityFocus: 80250 - QEMU 'fw_cfg_write()' Function Remote Code Execution Vulnerability

Misc.: 🔍
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Entryinfo

Created: 02/02/2016 09:55
Updated: 07/06/2022 17:29
Changes: 02/02/2016 09:55 (59), 07/22/2018 10:22 (29), 07/06/2022 17:29 (5)
Complete: 🔍

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