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EulerOS Virtualization 2.11.1 : libvirt (EulerOS-SA-2024-2175)

medium Nessus Plugin ID 205967

Synopsis

The remote EulerOS Virtualization host is missing multiple security updates.

Description

According to the versions of the libvirt package installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerabilities :

 An off-by-one error flaw was found in the udevListInterfacesByStatus() function in libvirt when the number of interfaces exceeds the size of the `names` array. This issue can be reproduced by sending specially crafted data to the libvirt daemon, allowing an unprivileged client to perform a denial of service attack by causing the libvirt daemon to crash.(CVE-2024-1441)

 A NULL pointer dereference flaw was found in the udevConnectListAllInterfaces() function in libvirt. This issue can occur when detaching a host interface while at the same time collecting the list of interfaces via virConnectListAllInterfaces API. This flaw could be used to perform a denial of service attack by causing the libvirt daemon to crash.(CVE-2024-2496)

 While the C API entry points will validate non-negative lengths for various parameters, the RPC server de- serialization code will need to allocate memory for arrays before entering the C API. These allocations will thus happen before the non-negative length check is performed. Passing a negative length to the g_new0 function will usually result in a crash due to the negative length being treated as a huge positive number. This was found and diagnosed by ALT Linux Team with AFLplusplus.(CVE-2024-2494)

 A race condition leading to a stack use-after-free flaw was found in libvirt. Due to a bad assumption in the virNetClientIOEventLoop() method, the data pointer to a stack-allocated virNetClientIOEventData structure ended up being used in the virNetClientIOEventFD callback while the data pointer s stack frame was concurrently being freed when returning from virNetClientIOEventLoop(). The virtproxyd daemon can be used to trigger requests. If libvirt is configured with fine-grained access control, this issue, in theory, allows a user to escape their otherwise limited access. This flaw allows a local, unprivileged user to access virtproxyd without authenticating. Remote users would need to authenticate before they could access it.(CVE-2024-4418)

Tenable has extracted the preceding description block directly from the EulerOS Virtualization libvirt security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Solution

Update the affected libvirt packages.

See Also

http://www.nessus.org/u?76e3bb1e

Plugin Details

Severity: Medium

ID: 205967

File Name: EulerOS_SA-2024-2175.nasl

Version: 1.1

Type: local

Published: 8/21/2024

Updated: 8/21/2024

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: Medium

Base Score: 4.9

Temporal Score: 3.6

Vector: CVSS2#AV:L/AC:L/Au:N/C:N/I:N/A:C

CVSS Score Source: CVE-2024-4418

CVSS v3

Risk Factor: Medium

Base Score: 6.2

Temporal Score: 5.4

Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: cpe:/o:huawei:euleros:uvp:2.11.1, p-cpe:/a:huawei:euleros:libvirt

Required KB Items: Host/local_checks_enabled, Host/cpu, Host/EulerOS/release, Host/EulerOS/rpm-list, Host/EulerOS/uvp_version

Exploit Ease: No known exploits are available

Patch Publication Date: 8/20/2024

Vulnerability Publication Date: 3/11/2024

Reference Information

CVE: CVE-2024-1441, CVE-2024-2494, CVE-2024-2496, CVE-2024-4418