Fabrice Bellard QEMU net_checksum_calculate memory corruption

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CVSS Meta Temp Score
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5.7$0-$5k0.00

A vulnerability classified as problematic has been found in Fabrice Bellard QEMU (Virtualization Software) (version unknown). Affected is the function net_checksum_calculate. The manipulation with an unknown input leads to a memory corruption vulnerability. CWE is classifying the issue as CWE-119. This is going to have an impact on availability.

The weakness was presented 03/03/2016 by Ling Liu with Qihoo 360 as Bug 1296567 as confirmed bug report (Bugzilla). The advisory is available at bugzilla.redhat.com. This vulnerability is traded as CVE-2016-2857 since 03/06/2016. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. Technical details are known, but there is no available exploit.

The vulnerability scanner Nessus provides a plugin with the ID 90036 (Fedora 22 : xen-4.5.2-9.fc22 (2016-38b20aa50f)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Fedora Local Security Checks and running in the context local. The commercial vulnerability scanner Qualys is able to test this issue with plugin 176848 (Debian Security Update for qemu (DLA 1599-1)).

Upgrading eliminates this vulnerability. A possible mitigation has been published 3 weeks after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at SecurityFocus (BID 84130), X-Force (111313), Vulnerability Center (SBV-58253) and Tenable (90036). See 81088, 81711, 82912 and 87559 for similar entries.

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VulDB Meta Base Score: 6.5
VulDB Meta Temp Score: 5.7

VulDB Base Score: 6.5
VulDB Temp Score: 5.7
VulDB Vector: 🔍
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NVD Base Score: 6.5
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Exploitinginfoedit

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

Local: No
Remote: Yes

Availability: 🔍
Status: Unproven

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 90036
Nessus Name: Fedora 22 : xen-4.5.2-9.fc22 (2016-38b20aa50f)
Nessus File: 🔍
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OpenVAS ID: 881932
OpenVAS Name: CentOS Update for qemu-guest-agent CESA-2017:0309 centos6
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Countermeasuresinfoedit

Recommended: Upgrade
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03/03/2016 🔍
03/03/2016 +0 days 🔍
03/06/2016 +3 days 🔍
03/08/2016 +2 days 🔍
03/19/2016 +11 days 🔍
03/21/2016 +2 days 🔍
03/21/2016 +0 days 🔍
04/11/2016 +20 days 🔍
04/17/2016 +6 days 🔍
12/04/2018 +961 days 🔍
02/05/2019 +63 days 🔍

Sourcesinfoedit

Vendor: https://bellard.org/

Advisory: Bug 1296567
Researcher: Ling Liu
Organization: Qihoo 360
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2016-2857 (🔍)
SecurityFocus: 84130 - QEMU Out of Bounds Denial of Service Vulnerability
X-Force: 111313 - Qemu net_checksum_calculate() function denial of service
Vulnerability Center: 58253 - QEMU Local DoS in net/checksum.c, Low

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Entryinfoedit

Created: 03/08/2016 10:33 PM
Updated: 02/05/2019 01:15 PM
Changes: (15) 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_company_name advisory_confirm_url countermeasure_name countermeasure_date source_securityfocus_date source_securityfocus_class
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