Detections
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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
Plugin Details
Severity: Medium
ID: 205967
File Name: EulerOS_SA-2024-2175.nasl
Version: 1.1
Type: local
Family: Huawei Local Security Checks
Published: 8/21/2024
Updated: 8/21/2024
Supported Sensors: Nessus
Risk Information
VPR
Risk Factor: Medium
Score: 4.4
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