QEMU hw/rdma/vmw/pvrdma_cmd.c create_cq/create_qp resource management

CVSS Meta Temp Score
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CTI Interest Score
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4.4$0-$5k0.00

Summaryinfo

A vulnerability was found in QEMU and classified as problematic. This impacts the function create_cq/create_qp of the file hw/rdma/vmw/pvrdma_cmd.c. Such manipulation leads to resource management. This vulnerability is listed as CVE-2018-20126. The attack must be carried out locally. There is no available exploit.

Detailsinfo

A vulnerability was found in QEMU (Virtualization Software) (the affected version is unknown). It has been rated as problematic. Affected by this issue is the function create_cq/create_qp of the file hw/rdma/vmw/pvrdma_cmd.c. The manipulation with an unknown input leads to a resource management vulnerability. Using CWE to declare the problem leads to CWE-399. Impacted is availability. CVE summarizes:

hw/rdma/vmw/pvrdma_cmd.c in QEMU allows create_cq and create_qp memory leaks because errors are mishandled.

The bug was discovered 12/19/2018. The weakness was presented 12/20/2018 by Li Qiang (oss-sec). The advisory is available at openwall.com. This vulnerability is handled as CVE-2018-20126 since 12/13/2018. The exploitation is known to be easy. Local access is required to approach this attack. No form of authentication is required for exploitation. Technical details are known, but there is no available exploit.

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 $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 209571 (Oracle Linux 8 : virt:kvm_utils3 (ELSA-2024-12792)), which helps to determine the existence of the flaw in a target environment. The commercial vulnerability scanner Qualys is able to test this issue with plugin 157908 (Oracle Enterprise Linux Security Update for qemu (ELSA-2019-4518)).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the databases at Tenable (209571) and SecurityFocus (BID 106298†). See VDB-127948, VDB-128256, VDB-128257 and VDB-128259 for similar entries. If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.4
VulDB Meta Temp Score: 4.4

VulDB Base Score: 3.3
VulDB Temp Score: 3.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.5
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Resource management
CWE: CWE-399 / CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 209571
Nessus Name: Oracle Linux 8 : virt:kvm_utils3 (ELSA-2024-12792)

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

12/13/2018 🔍
12/19/2018 +6 days 🔍
12/19/2018 +0 days 🔍
12/20/2018 +1 days 🔍
12/20/2018 +0 days 🔍
12/21/2018 +1 days 🔍
10/26/2024 +2136 days 🔍

Sourcesinfo

Product: qemu.org

Advisory: USN-3923-1
Researcher: Li Qiang
Status: Confirmed

CVE: CVE-2018-20126 (🔍)
GCVE (CVE): GCVE-0-2018-20126
GCVE (VulDB): GCVE-100-128258
SecurityFocus: 106298 - QEMU 'hw/rdma/vmw/pvrdma_cmd.c' Multiple Local Denial of Service Vulnerabilities

See also: 🔍

Entryinfo

Created: 12/21/2018 13:04
Updated: 10/26/2024 21:14
Changes: 12/21/2018 13:04 (61), 04/23/2020 09:17 (4), 06/20/2023 14:13 (3), 10/26/2024 21:14 (16)
Complete: 🔍
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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