QEMU 14.04/16.04/18.04/18.10 hw/net/rtl8139.c rtl8139_do_receive integer overflow

CVSS Meta Temp Score
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CTI Interest Score
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7.2$0-$5k0.00

Summaryinfo

A vulnerability has been found in QEMU 14.04/16.04/18.04/18.10 and classified as critical. This affects the function rtl8139_do_receive of the file hw/net/rtl8139.c. This manipulation causes integer overflow. The identification of this vulnerability is CVE-2018-17958. It is possible to initiate the attack remotely. There is no exploit available. The affected component should be upgraded.

Detailsinfo

A vulnerability has been found in QEMU 14.04/16.04/18.04/18.10 (Virtualization Software) and classified as critical. Affected by this vulnerability is the function rtl8139_do_receive of the file hw/net/rtl8139.c. The manipulation with an unknown input leads to a integer overflow vulnerability. The CWE definition for the vulnerability is 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. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

Qemu has a Buffer Overflow in rtl8139_do_receive in hw/net/rtl8139.c because an incorrect integer data type is used.

The bug was discovered 10/08/2018. The weakness was shared 10/09/2018 by Jason Wang (oss-sec). The advisory is shared at openwall.com. This vulnerability is known as CVE-2018-17958 since 10/03/2018. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Technical details are known, but no exploit is available.

The vulnerability was handled as a non-public zero-day exploit for at least 1 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 197310 (Ubuntu Security Notification for Qemu Vulnerabilities (USN-3826-1)).

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†). The entries VDB-123374, VDB-125150, VDB-125151 and VDB-125348 are related to this item. If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
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CVSSv3info

VulDB Meta Base Score: 7.4
VulDB Meta Temp Score: 7.2

VulDB Base Score: 7.3
VulDB Temp Score: 7.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔍

CVSSv2info

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VulDB Base Score: 🔍
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Exploitinginfo

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

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

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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: 🔍

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Timelineinfo

10/03/2018 🔍
10/08/2018 +5 days 🔍
10/09/2018 +0 days 🔍
10/09/2018 +0 days 🔍
10/09/2018 +0 days 🔍
10/10/2018 +1 days 🔍
11/26/2018 +47 days 🔍
11/27/2018 +1 days 🔍
05/23/2023 +1638 days 🔍

Sourcesinfo

Product: qemu.org

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

CVE: CVE-2018-17958 (🔍)
GCVE (CVE): GCVE-0-2018-17958
GCVE (VulDB): GCVE-100-125149
SecurityFocus: 105556 - QEMU 'hw/net/rtl8139.c' Integer Overflow Vulnerability

See also: 🔍

Entryinfo

Created: 10/10/2018 13:11
Updated: 05/23/2023 18:11
Changes: 10/10/2018 13:11 (74), 05/29/2020 11:54 (6), 05/23/2023 18:02 (4), 05/23/2023 18:11 (1)
Complete: 🔍
Cache ID: 216::103

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