QEMU up to 8.1.x async_len buffer overflow

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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7.4$0-$5k0.00

Summaryinfo

A vulnerability described as critical has been identified in QEMU up to 8.1.x. This impacts an unknown function. Such manipulation of the argument async_len leads to buffer overflow. This vulnerability is uniquely identified as CVE-2024-24474. The attack can be launched remotely. No exploit exists. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability, which was classified as critical, has been found in QEMU up to 8.1.x (Virtualization Software). Affected by this issue is an unknown code block. The manipulation of the argument async_len with an unknown input leads to a buffer overflow vulnerability. Using CWE to declare the problem leads to CWE-120. The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer, leading to a buffer overflow. Impacted is confidentiality, integrity, and availability. CVE summarizes:

Buffer Overflow vulnerability in Qemu before v.8.2.0 allows a remote attacker to execute arbitrary code via the async_len variable to the FIFO buffer component.

The weakness was disclosed 02/20/2024 as 1810. The advisory is shared for download at gitlab.com. This vulnerability is handled as CVE-2024-24474 since 01/25/2024. There are known technical details, but no exploit is available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 10/25/2024).

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.

Upgrading to version 8.2.0 eliminates this vulnerability. Applying the patch 77668e4b9bca03a856c27ba899a2513ddf52bb52 is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the vulnerability database at Tenable (209571). Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.6
VulDB Meta Temp Score: 7.4

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

CNA Base Score: 8.8
CNA Vector: 🔍

CVSSv2info

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

Exploitinginfo

Class: Buffer overflow
CWE: CWE-120 / CWE-119
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: 209571
Nessus Name: Oracle Linux 8 : virt:kvm_utils3 (ELSA-2024-12792)

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: QEMU 8.2.0
Patch: 77668e4b9bca03a856c27ba899a2513ddf52bb52

Timelineinfo

01/25/2024 🔍
02/20/2024 +26 days 🔍
02/20/2024 +0 days 🔍
10/25/2024 +248 days 🔍

Sourcesinfo

Product: qemu.org

Advisory: 1810
Status: Confirmed

CVE: CVE-2024-24474 (🔍)
GCVE (CVE): GCVE-0-2024-24474
GCVE (VulDB): GCVE-100-254252

Entryinfo

Created: 02/20/2024 19:37
Updated: 10/25/2024 05:47
Changes: 02/20/2024 19:37 (43), 06/11/2024 10:39 (15), 08/15/2024 23:57 (12), 10/25/2024 05:47 (2)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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