QEMU up to 3.0.0 NE2000 NIC Emulation integer overflow

CVSS Meta Temp Score
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CTI Interest Score
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6.3$0-$5k0.00

Summaryinfo

A vulnerability was found in QEMU up to 3.0.0. It has been declared as critical. This vulnerability affects unknown code of the component NE2000 NIC Emulation. Such manipulation leads to integer overflow. This vulnerability is listed as CVE-2018-10839. The attack may be performed from remote. There is no available exploit. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability was found in QEMU up to 3.0.0 (Virtualization Software) and classified as critical. Affected by this issue is some unknown processing of the component NE2000 NIC Emulation. The manipulation with an unknown input leads to a integer overflow vulnerability. Using CWE to declare the problem leads to CWE-190. The product performs a calculation that can produce an integer overflow or wraparound, when the logic assumes that the resulting value will always be larger than the original value. This can introduce other weaknesses when the calculation is used for resource management or execution control. Impacted is confidentiality, integrity, and availability. CVE summarizes:

Qemu emulator <= 3.0.0 built with the NE2000 NIC emulation support is vulnerable to an integer overflow, which could lead to buffer overflow issue. It could occur when receiving packets over the network. A user inside guest could use this flaw to crash the Qemu process resulting in DoS.

The bug was discovered 10/08/2018. The weakness was presented 10/16/2018 by Jason Wang (oss-sec). The advisory is shared for download at openwall.com. This vulnerability is handled as CVE-2018-10839 since 05/09/2018. The exploitation is known to be easy. The attack may be launched remotely. Required for exploitation is a simple authentication. There are neither technical details nor an exploit publicly available.

The vulnerability was handled as a non-public zero-day exploit for at least 8 days. During that time the estimated underground price was around $5k-$25k. The vulnerability scanner Nessus provides a plugin with the ID 119216 (Ubuntu 14.04 LTS / 16.04 LTS / 18.04 LTS / 18.10 : qemu vulnerabilities (USN-3826-1)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Ubuntu Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 176528 (Debian Security Update for qemu (DSA 4338-1)).

Upgrading eliminates this vulnerability. A possible mitigation has been published 2 months after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (119216) and SecurityFocus (BID 105556†). See VDB-123374, VDB-125149, VDB-125150 and VDB-125151 for similar entries. Once again VulDB remains the best source for vulnerability data.

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.4
VulDB Meta Temp Score: 6.3

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 6.5
NVD Vector: 🔍

CNA Base Score: 6.5
CNA Vector (Red Hat, Inc.): 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
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NVD Base Score: 🔍

Exploitinginfo

Class: Integer overflow
CWE: CWE-190 / CWE-189
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 119216
Nessus Name: Ubuntu 14.04 LTS / 16.04 LTS / 18.04 LTS / 18.10 : qemu vulnerabilities (USN-3826-1)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Timelineinfo

05/09/2018 🔍
10/08/2018 +152 days 🔍
10/09/2018 +1 days 🔍
10/16/2018 +6 days 🔍
10/16/2018 +0 days 🔍
10/17/2018 +1 days 🔍
11/26/2018 +40 days 🔍
11/27/2018 +1 days 🔍
05/25/2023 +1640 days 🔍

Sourcesinfo

Product: qemu.org

Advisory: USN-3826-1
Researcher: Jason Wang
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2018-10839 (🔍)
GCVE (CVE): GCVE-0-2018-10839
GCVE (VulDB): GCVE-100-125348

OVAL: 🔍

SecurityFocus: 105556 - QEMU 'hw/net/rtl8139.c' Integer Overflow Vulnerability

See also: 🔍

Entryinfo

Created: 10/17/2018 06:44
Updated: 05/25/2023 14:42
Changes: 10/17/2018 06:44 (75), 04/02/2020 15:33 (6), 05/25/2023 14:39 (4), 05/25/2023 14:41 (11), 05/25/2023 14:42 (1)
Complete: 🔍
Cache ID: 216::103

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