Fabrice Bellard QEMU e1000 hw/net/e1000.c process_tx_desc infinite loop

CVSS Meta Temp Score
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3.4$0-$5k0.00

A vulnerability was found in Fabrice Bellard QEMU (Virtualization Software) (unknown version). It has been classified as problematic. Affected is the function process_tx_desc of the file hw/net/e1000.c of the component e1000. The manipulation with an unknown input leads to a infinite loop vulnerability. CWE is classifying the issue as CWE-835. The product contains an iteration or loop with an exit condition that cannot be reached, i.e., an infinite loop. This is going to have an impact on availability. CVE summarizes:

The process_tx_desc function in hw/net/e1000.c in QEMU before 2.4.0.1 does not properly process transmit descriptor data when sending a network packet, which allows attackers to cause a denial of service (infinite loop and guest crash) via unspecified vectors.

The weakness was presented 03/18/2023. This vulnerability is traded as CVE-2015-6815 since 09/05/2015. The exploitability is told to be easy. Access to the local network is required for this attack. The requirement for exploitation is a authentication. There are known technical details, but no exploit is available.

Applying a patch is able to eliminate this problem. The advisory contains the following remark:

While processing transmit descriptors, it could lead to an infinite loop if 'bytes' was to become zero; Add a check to avoid it. [The guest can force 'bytes' to 0 by setting th

Productinfo

Type

Vendor

Name

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 3.5
VulDB Meta Temp Score: 3.4

VulDB Base Score: 3.5
VulDB Temp Score: 3.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 3.5
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Infinite loop
CWE: CWE-835 / CWE-404
ATT&CK: Unknown

Local: No
Remote: Partially

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

Interest: 🔍
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Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔍

Timelineinfo

09/05/2015 🔍
03/18/2023 +2751 days 🔍
03/18/2023 +0 days 🔍
04/11/2023 +24 days 🔍

Sourcesinfo

Vendor: bellard.org

Advisory: USN-2745-1
Status: Confirmed

CVE: CVE-2015-6815 (🔍)

Entryinfo

Created: 03/18/2023 09:58
Updated: 04/11/2023 17:48
Changes: 03/18/2023 09:58 (57), 04/11/2023 17:48 (2)
Complete: 🔍

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