The remote Oracle Linux 7 host has packages installed that are affected by a vulnerability as referenced in the ELSA-2020-5720 advisory.

    [5.7.0-15.el7]
    - qemu: Escape the qemu driver systemd DOT hoax (Wim ten Have)  [Orabug:
      31380815]

    [5.7.0-14.el7]
    - vmx: make 'fileName' optional for CD-ROMs (Pino Toscano)  [Orabug: 31350200]
    - vmx: shortcut earlier few 'ignore' cases in virVMXParseDisk() (Pino Toscano)  [Orabug: 31350200]
    - domain group: Fix a potential SEGV while restoring guest domains (Wim ten Have)  [Orabug: 31285615]
    - cpu_map: Distinguish Cascadelake-Server from Skylake-Server (Jiri Denemark)  [Orabug: 31214897]
    - cpu_map: Add more -noTSX x86 CPU models (Christian Ehrhardt)  [Orabug: 31214897]
    - qemuDomainGetStatsIOThread: Don't leak array with 0 iothreads (Peter Krempa)  [Orabug: 31251756]     {CVE-2020-12430}

Tenable has extracted the preceding description block directly from the Oracle Linux security advisory.

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

The remote Oracle Linux 7 host has packages installed that are affected by a vulnerability as referenced in the ELSA-2020-5719 advisory.

    [5.7.0-15.el7]
    - qemu: Escape the qemu driver systemd DOT hoax (Wim ten Have)  [Orabug:
      31380815]

    [5.7.0-14.el7]
    - vmx: make 'fileName' optional for CD-ROMs (Pino Toscano)  [Orabug: 31350200]
    - vmx: shortcut earlier few 'ignore' cases in virVMXParseDisk() (Pino Toscano)  [Orabug: 31350200]
    - domain group: Fix a potential SEGV while restoring guest domains (Wim ten Have)  [Orabug: 31285615]
    - cpu_map: Distinguish Cascadelake-Server from Skylake-Server (Jiri Denemark)  [Orabug: 31214897]
    - cpu_map: Add more -noTSX x86 CPU models (Christian Ehrhardt)  [Orabug: 31214897]
    - qemuDomainGetStatsIOThread: Don't leak array with 0 iothreads (Peter Krempa)  [Orabug: 31251756]     {CVE-2020-12430}

Tenable has extracted the preceding description block directly from the Oracle Linux security advisory.

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

The remote NewStart CGSL host, running version MAIN 6.06, has libvirt packages installed that are affected by a vulnerability:

  - An issue was discovered in qemuDomainGetStatsIOThread in qemu/qemu_driver.c in libvirt 4.10.0 though 6.x     before 6.1.0. A memory leak was found in the virDomainListGetStats libvirt API that is responsible for     retrieving domain statistics when managing QEMU guests. This flaw allows unprivileged users with a read-     only connection to cause a memory leak in the domstats command, resulting in a potential denial of     service. (CVE-2020-12430)

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

This update for libvirt fixes the following issues :

Security issues fixed :

CVE-2020-10703: Fixed a daemon crash caused by pools without target paths (bsc#1168683).

CVE-2020-12430: Fixed a memory leak in qemuDomainGetStatsIOThread (bsc#1170765).

Non-security issues fixed :

Support setting credit2 scheduler parameters for xen (bsc#1162160).

Add SLE 15 and SLE 12 service packs support to 'libvirtd' (bsc#1154093).

Add support boot from 'vfio-ccw'and 'mdev' devices (jsc#SLE-5826, FATE#327355, bsc#1152649).

Fix lock manager lock ordering (bsc#1145774).

Do not define known no-op features. (bsc#1151850).

Enable use of newer libxl APIs for retrieving memory statistics (bsc#1157490, bsc#1167007).

Create multipath targets for qemu PR (bsc#1161883).

Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

- Fix iptables No chain/target/match by that name (bz     #1813830)

  - systemd: start libvirtd after firewalld/iptables     services (bz #1697636)

  - CVE-2020-12430: memory leak in domstats may allow     read-only user to perform DoS attack (bz #1828216, bz     #1828190)

  - CVE-2020-10703: Potential denial of service via active     pool without target path (bz #1820690, bz #1816650)

  - CVE-2019-20485: potential DoS by holding a monitor job     while querying QEMU guest-agent (bz #1809741, bz     #1809740)

Note that Tenable Network Security has extracted the preceding description block directly from the Fedora update system website.
Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

The remote Debian 10 host has packages installed that are affected by multiple vulnerabilities as referenced in the dla-3778 advisory.

    -------------------------------------------------------------------------     Debian LTS Advisory DLA-3778-1                debian-lts@lists.debian.org     https://www.debian.org/lts/security/                       Guilhem Moulin     April 01, 2024                                https://wiki.debian.org/LTS
    -------------------------------------------------------------------------

    Package        : libvirt     Version        : 5.0.0-4+deb10u2     CVE ID         : CVE-2020-10703 CVE-2020-12430 CVE-2020-25637 CVE-2021-3631                      CVE-2021-3667 CVE-2021-3975 CVE-2021-4147 CVE-2022-0897                      CVE-2024-1441 CVE-2024-2494 CVE-2024-2496     Debian Bug     : 959447 971555 990709 991594 1002535 1009075 1066058 1067461

    Multiple vulnerabilities were found in libvirt, a C toolkit to interact     with the virtualization capabilities of Linux, which could lead to     denial of service or information disclosure.

    CVE-2020-10703

        A NULL pointer dereference was found in the libvirt API that is responsible for         fetching a storage pool based on its target path.  In more detail, this flaw affects         storage pools created without a target path such as network-based pools like gluster         and RBD.  Unprivileged users with a read-only connection could abuse this flaw to         crash the libvirt daemon, resulting in a potential denial of service.

    CVE-2020-12430

        A memory leak was found in the virDomainListGetStats libvirt API that is responsible         for retrieving domain statistics when managing QEMU guests.  This flaw allows         unprivileged users with a read-only connection to cause a memory leak in the domstats         command, resulting in a potential denial of service.

    CVE-2020-25637

        A double free memory issue was found in the libvirt API that is responsible for         requesting information about network interfaces of a running QEMU domain.  This flaw         affects the polkit access control driver.  Specifically, clients connecting to the         read-write socket with limited ACL permissions could use this flaw to crash the         libvirt daemon, resulting in a denial of service, or potentially escalate their         privileges on the system.  The highest threat from this vulnerability is to data         confidentiality and integrity as well as system availability.

    CVE-2021-3631

        An issue was found in the generation of SELinux MCS category pairs for VMs' dynamic         labels.  This flaw allows one exploited guest to access files labeled for another         guest, resulting in the breaking out of sVirt confinement.

    CVE-2021-3667

        An improper locking issue was found in the virStoragePoolLookupByTargetPath API.  It         occurs in the storagePoolLookupByTargetPath function where a locked virStoragePoolObj         object is not properly released on ACL permission failure.  Clients connecting to the         read-write socket with limited ACL permissions could use this flaw to acquire the lock         and prevent other users from accessing storage pool/volume APIs, resulting in a denial         of service condition.

    CVE-2021-3975

        A use-after-free issue was found in libvirt in qemuProcessHandleMonitorEOF(), where         the qemuMonitorUnregister() function is called using multiple threads without being         adequately protected by a monitor lock.  This flaw could be triggered by the         virConnectGetAllDomainStats API when the guest is shutting down.  An unprivileged         client with a read-only connection could use this flaw to perform a denial of service         attack by causing the libvirt daemon to crash.

    CVE-2021-4147

        Jim Fehlig discovered that a malicious guest using the libxl driver could cause         libvirtd on the host to deadlock or crash when continuously rebooting itself.

    CVE-2022-0897

        A flaw was found in the libvirt nwfilter driver.  The virNWFilterObjListNumOfNWFilters         method failed to acquire the driver->nwfilters mutex before iterating over         virNWFilterObj instances.  There was no protection to stop another thread from         concurrently modifying the driver->nwfilters object.  This flaw allows a malicious,         unprivileged user to exploit this issue via libvirt's API virConnectNumOfNWFilters to         crash the network filter management daemon (libvirtd/virtnwfilterd).

    CVE-2024-1441

        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-2024-2494

        The ALT Linux Team discovered that the RPC server deserialization code allocates         memory for arrays before the non-negative length check is performed by the C API entry         points.  Passing a negative length therefore results in a crash due to the negative         length being treated as a huge positive number.  This flaw allows a local,         unprivileged user to perform a denial of service attack by causing the libvirt daemon         to crash.

    CVE-2024-2496

        A NULL pointer dereference flaw was found in the udevConnectListAllInterfaces()         function.  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.

    For Debian 10 buster, these problems have been fixed in version     5.0.0-4+deb10u2.

    We recommend that you upgrade your libvirt packages.

    For the detailed security status of libvirt please refer to     its security tracker page at:
    https://security-tracker.debian.org/tracker/libvirt

    Further information about Debian LTS security advisories, how to apply     these updates to your system and frequently asked questions can be     found at: https://wiki.debian.org/LTS     Attachment:
    signature.asc     Description: PGP signature

Tenable has extracted the preceding description block directly from the Debian security advisory.

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

This update for libvirt fixes the following issues :

Security issues fixed :

CVE-2020-10703: Fixed a daemon crash caused by pools without target paths (bsc#1168683).

CVE-2020-12430: Fixed a memory leak in qemuDomainGetStatsIOThread (bsc#1170765).

Non-security issues fixed :

Support setting credit2 scheduler parameters for xen (bsc#1162160).

Enable use of newer libxl APIs for retrieving memory statistics (bsc#1157490, bsc#1167007).

Create multipath targets for qemu PR (bsc#1161883).

Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

The remote NewStart CGSL host, running version MAIN 6.02, has libvirt packages installed that are affected by a vulnerability:

  - An issue was discovered in qemuDomainGetStatsIOThread in qemu/qemu_driver.c in libvirt 4.10.0 though 6.x     before 6.1.0. A memory leak was found in the virDomainListGetStats libvirt API that is responsible for     retrieving domain statistics when managing QEMU guests. This flaw allows unprivileged users with a read-     only connection to cause a memory leak in the domstats command, resulting in a potential denial of     service. (CVE-2020-12430)

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

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

  - A double free memory issue was found to occur in the     libvirt API, in versions before 6.8.0, responsible for     requesting information about network interfaces of a     running QEMU domain. This flaw affects the polkit     access control driver. Specifically, clients connecting     to the read-write socket with limited ACL permissions     could use this flaw to crash the libvirt daemon,     resulting in a denial of service, or potentially     escalate their privileges on the system. The highest     threat from this vulnerability is to data     confidentiality and integrity as well as system     availability.(CVE-2020-25637)

  - A flaw was found in libvirt, where it leaked a file     descriptor for `/dev/mapper/control` into the QEMU     process. This file descriptor allows for privileged     operations to happen against the device-mapper on the     host. This flaw allows a malicious guest user or     process to perform operations outside of their standard     permissions, potentially causing serious damage to the     host operating system. The highest threat from this     vulnerability is to confidentiality, integrity, as well     as system availability.(CVE-2020-14339)

  - An issue was discovered in qemuDomainGetStatsIOThread     in qemu/qemu_driver.c in libvirt 4.10.0 though 6.x     before 6.1.0. A memory leak was found in the     virDomainListGetStats libvirt API that is responsible     for retrieving domain statistics when managing QEMU     guests. This flaw allows unprivileged users with a     read-only connection to cause a memory leak in the     domstats command, resulting in a potential denial of     service.(CVE-2020-12430)

  - An information disclosure vulnerability was found in     libvirt. HTTP cookies used to access network-based     disks were saved in the XML dump of the guest domain.
    This flaw allows an attacker to access potentially     sensitive information in the domain configuration via     the `dumpxml` command.(CVE-2020-14301)

Note that Tenable Network Security has extracted the preceding description block directly from the EulerOS security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

The remote Ubuntu 18.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-4371-1 advisory.

    It was discovered that libvirt incorrectly handled an active pool without a target path. A remote attacker     could possibly use this issue to cause libvirt to crash, resulting in a denial of service.
    (CVE-2020-10703)

    It was discovered that libvirt incorrectly handled memory when retrieving certain domain statistics. A     remote attacker could possibly use this issue to cause libvirt to consume resources, resulting in a denial     of service. This issue only affected Ubuntu 19.10. (CVE-2020-12430)

Tenable has extracted the preceding description block directly from the Ubuntu security advisory.

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

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - An issue was discovered in qemuDomainGetStatsIOThread in qemu/qemu_driver.c in libvirt 4.10.0 though 6.x     before 6.1.0. A memory leak was found in the virDomainListGetStats libvirt API that is responsible for     retrieving domain statistics when managing QEMU guests. This flaw allows unprivileged users with a read-     only connection to cause a memory leak in the domstats command, resulting in a potential denial of     service. (CVE-2020-12430)

Note that Nessus relies on the presence of the package as reported by the vendor.

ID	Name	Product	Family	Published	Updated	Severity
180916	Oracle Linux 7 : libvirt (ELSA-2020-5720)	Nessus	Oracle Linux Local Security Checks	9/7/2023	10/22/2024	medium
180886	Oracle Linux 7 : libvirt (ELSA-2020-5719)	Nessus	Oracle Linux Local Security Checks	9/7/2023	10/22/2024	medium
266280	NewStart CGSL MAIN 6.06 : libvirt Vulnerability (NS-SA-2025-0225)	Nessus	NewStart CGSL Local Security Checks	9/30/2025	9/30/2025	medium
136648	SUSE SLED15 / SLES15 Security Update : libvirt (SUSE-SU-2020:1208-1)	Nessus	SuSE Local Security Checks	5/15/2020	3/12/2024	medium
137425	Fedora 31 : libvirt (2020-5cd83efda7)	Nessus	Fedora Local Security Checks	6/17/2020	3/7/2024	medium
192736	Debian dla-3778 : libnss-libvirt - security update	Nessus	Debian Local Security Checks	4/1/2024	5/16/2025	medium
136783	SUSE SLES12 Security Update : libvirt (SUSE-SU-2020:1277-1)	Nessus	SuSE Local Security Checks	5/22/2020	3/12/2024	medium
147389	NewStart CGSL MAIN 6.02 : libvirt Vulnerability (NS-SA-2021-0050)	Nessus	NewStart CGSL Local Security Checks	3/10/2021	3/11/2021	medium
147678	EulerOS Virtualization 2.9.0 : libvirt (EulerOS-SA-2021-1666)	Nessus	Huawei Local Security Checks	3/11/2021	5/10/2022	high
136802	Ubuntu 18.04 LTS : libvirt vulnerabilities (USN-4371-1)	Nessus	Ubuntu Local Security Checks	5/22/2020	9/3/2025	medium
223274	Linux Distros Unpatched Vulnerability : CVE-2020-12430	Nessus	Misc.	3/4/2025	9/10/2025	medium
147481	EulerOS Virtualization 2.9.1 : libvirt (EulerOS-SA-2021-1631)	Nessus	Huawei Local Security Checks	3/10/2021	5/10/2022	high

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