Fabrice Bellard QEMU CAP_SYS_RAWIO memory corruption

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CVSS Meta Temp Score
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7.1$0-$5k0.00

A vulnerability was found in Fabrice Bellard QEMU (Virtualization Software) (affected version not known) 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. 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 local. 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 SecurityFocus (BID 80250), X-Force (110305), Vulnerability Center (SBV-56266) and Tenable (88506). lists.gnu.org is providing further details. The entries 80761, 94718, 94719 and 94720 are pretty similar.

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VulDB Meta Base Score: 8.1
VulDB Meta Temp Score: 7.1

VulDB Base Score: 8.1
VulDB Temp Score: 7.1
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NVD Base Score: 8.1
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Exploitinginfoedit

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)
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OpenVAS ID: 80056
OpenVAS Name: Oracle Linux Local Check: ELSA-2016-0082
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Recommended: Patch
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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 🔍
06/20/2018 +804 days 🔍
07/22/2018 +32 days 🔍

Sourcesinfoedit

Vendor: https://bellard.org/

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

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

Misc.: 🔍
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Entryinfoedit

Created: 02/02/2016 09:55 AM
Updated: 07/22/2018 10:22 AM
Changes: (29) vulnerability_cwe vulnerability_cvss2_nvd_av vulnerability_cvss2_nvd_ac vulnerability_cvss2_nvd_au vulnerability_cvss2_nvd_ci vulnerability_cvss2_nvd_ii vulnerability_cvss2_nvd_ai vulnerability_cvss3_vuldb_av vulnerability_cvss3_vuldb_ac vulnerability_cvss3_vuldb_pr vulnerability_cvss3_vuldb_ui vulnerability_cvss3_vuldb_s vulnerability_cvss3_vuldb_c vulnerability_cvss3_vuldb_i vulnerability_cvss3_vuldb_a advisory_person_name advisory_confirm_url countermeasure_date source_cve_nvd_published source_securityfocus_date source_securityfocus_class source_nessus_id source_nessus_name source_nessus_filename source_nessus_family source_openvas_id source_openvas_filename source_openvas_title source_openvas_family
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