QEMU up to 5.0.0 hw/net/net_tx_pkt.c net_tx_pkt_add_raw_fragment Network Packet input validation

Summaryinfo

A vulnerability has been found in QEMU up to 5.0.0 and classified as problematic. This affects the function net_tx_pkt_add_raw_fragment of the file hw/net/net_tx_pkt.c. Performing a manipulation as part of Network Packet results in input validation. This vulnerability is known as CVE-2020-16092. Remote exploitation of the attack is possible. No exploit is available.

Detailsinfo

A vulnerability, which was classified as problematic, was found in QEMU up to 5.0.0 (Virtualization Software). This affects the function net_tx_pkt_add_raw_fragment of the file hw/net/net_tx_pkt.c. The manipulation as part of a Network Packet leads to a input validation vulnerability. CWE is classifying the issue as CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. This is going to have an impact on availability. The summary by CVE is:

In QEMU through 5.0.0, an assertion failure can occur in the network packet processing. This issue affects the e1000e and vmxnet3 network devices. A malicious guest user/process could use this flaw to abort the QEMU process on the host, resulting in a denial of service condition in net_tx_pkt_add_raw_fragment in hw/net/net_tx_pkt.c.

The weakness was published 08/11/2020. This vulnerability is uniquely identified as CVE-2020-16092 since 07/28/2020. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Technical details are known, but no exploit is available. The price for an exploit might be around USD $5k-$25k at the moment (estimation calculated on 10/12/2024).

The vulnerability scanner Nessus provides a plugin with the ID 208647 (CentOS 7 : qemu-kvm-ma (RHSA-2021:0346)), which helps to determine the existence of the flaw in a target environment.

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 vulnerability database at Tenable (208647). If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Type

• Virtualization Software

Name

• QEMU

Version

• 5.0

License

• open-source

Website

• Product: https://www.qemu.org/

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If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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