Debian update for xen

1) Information disclosure

EUVDB-ID: #VU87457

Risk: Low

CVSSv4.0: 1.1 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2023-28746

CWE-ID: CWE-200 - Information exposure

Exploit availability: No

Description

The vulnerability allows a local user to gain access to potentially sensitive information.

The vulnerability exists due to information exposure through microarchitectural state after transient execution from some register files for some Intel Atom Processors. A local user can gain access to sensitive information.

Mitigation

Update xen package to version 4.17.5+23-ga4e5191dc0-1.

Vulnerable software versions

Debian Linux: All versions

xen (Debian package): before 4.17.5+23-ga4e5191dc0-1

CPE2.3

External links

http://lists.debian.org/debian-security-announce/2024/msg00252.html

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

2) Resource management error

EUVDB-ID: #VU86860

Risk: Medium

CVSSv4.0: 5.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H/E:U/U:Green]

CVE-ID: CVE-2023-46841

CWE-ID: CWE-399 - Resource Management Errors

Exploit availability: No

Description

The vulnerability allows a remote guest to perform a denial of service (DoS) attack.

The vulnerability exists due to incorrect implementation of the Shadow Stacks (CET-SS) feature. An unprivileged guest can cause a hypervisor crash, causing a Denial of Service (DoS) of the entire host.

Mitigation

Update xen package to version 4.17.5+23-ga4e5191dc0-1.

Vulnerable software versions

Debian Linux: All versions

xen (Debian package): before 4.17.5+23-ga4e5191dc0-1

CPE2.3

External links

http://lists.debian.org/debian-security-announce/2024/msg00252.html

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

3) Input validation error

EUVDB-ID: #VU88228

Risk: Medium

CVSSv4.0: 4.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2023-46842

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a malicious guest to perform a denial of service (DoS) attack.

The vulnerability exists due to insufficient validation of register values when invoking a hypercall. A malicious HVM or PVH guest can pass specially crafted input to the hypervisor and perform a denial of service (DoS) attack.

Mitigation

Update xen package to version 4.17.5+23-ga4e5191dc0-1.

Vulnerable software versions

Debian Linux: All versions

xen (Debian package): before 4.17.5+23-ga4e5191dc0-1

CPE2.3

External links

http://lists.debian.org/debian-security-announce/2024/msg00252.html

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

4) Race condition

EUVDB-ID: #VU87374

Risk: Low

CVSSv4.0: 7.4 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:U/U:Clear]

CVE-ID: CVE-2024-2193

CWE-ID: CWE-362 - Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

Exploit availability: No

Description

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to a speculative race condition. A local user can exploit the race and gain unauthorized access to contents of arbitrary host memory, including memory assigned to other guests.

The vulnerability was dubbed GhostRace.

Mitigation

Update xen package to version 4.17.5+23-ga4e5191dc0-1.

Vulnerable software versions

Debian Linux: All versions

xen (Debian package): before 4.17.5+23-ga4e5191dc0-1

CPE2.3

External links

http://lists.debian.org/debian-security-announce/2024/msg00252.html

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

5) Processor optimization removal or modification of security-critical code

EUVDB-ID: #VU88374

Risk: Medium

CVSSv4.0: 7.6 [CVSS:4.0/AV:A/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:U/U:Green]

CVE-ID: CVE-2024-2201

CWE-ID: CWE-1037 - Processor optimization removal or modification of security-critical code

Exploit availability: No

Description

The vulnerability allows a malicious guest to escalate privileges on the system.

The vulnerability exists due to native branch history injection on x86 systems. A malicious guest can infer the contents of arbitrary host memory, including memory assigned to other guests and compromise the affected system.

Mitigation

Update xen package to version 4.17.5+23-ga4e5191dc0-1.

Vulnerable software versions

Debian Linux: All versions

xen (Debian package): before 4.17.5+23-ga4e5191dc0-1

CPE2.3

External links

http://lists.debian.org/debian-security-announce/2024/msg00252.html

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the local network (LAN).

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

6) Type confusion

EUVDB-ID: #VU88372

Risk: Low

CVSSv4.0: 5.9 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2024-31142

CWE-ID: CWE-843 - Type confusion

Exploit availability: No

Description

The vulnerability allows a malicious guest to escalate privileges on the system.

The vulnerability exists due to a logical error caused by a branch type confusion when implementing fixes for the following vulnerabilities:

#VU65219 (CVE-2022-23816)
#VU65204 (CVE-2022-23825)
#VU65205 (CVE-2022-29900)
#VU79263 (CVE-2023-20569)

A malicious guest can gain access to sensitive information and escalate privileges on the system.

Mitigation

Update xen package to version 4.17.5+23-ga4e5191dc0-1.

Vulnerable software versions

Debian Linux: All versions

xen (Debian package): before 4.17.5+23-ga4e5191dc0-1

CPE2.3

External links

http://lists.debian.org/debian-security-announce/2024/msg00252.html

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

7) Improper locking

EUVDB-ID: #VU94499

Risk: Medium

CVSSv4.0: 2.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:N/SC:N/SI:N/SA:H/E:U/U:Green]

CVE-ID: CVE-2024-31143

CWE-ID: CWE-667 - Improper Locking

Exploit availability: No

Description

The vulnerability allows a malicious guest to perform a denial of service (DoS) attack.

The vulnerability exists due to double unlock in x86 guest IRQ handling. An optional feature of PCI MSI called "Multiple Message" allows a device to use multiple consecutive interrupt vectors. A malicious guest can crash the hypervisor.

Mitigation

Update xen package to version 4.17.5+23-ga4e5191dc0-1.

Vulnerable software versions

Debian Linux: All versions

xen (Debian package): before 4.17.5+23-ga4e5191dc0-1

CPE2.3

External links

http://lists.debian.org/debian-security-announce/2024/msg00252.html

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated privileged user via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

8) Improper error handling

EUVDB-ID: #VU96006

Risk: Medium

CVSSv4.0: 6.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2024-31145

CWE-ID: CWE-388 - Error Handling

Exploit availability: No

Description

The vulnerability allows a malicious guest to escalate privileges on the system.

The vulnerability exists due to improper error handling in x86 IOMMU identity mapping. A malicious guest can access memory regions related to other guests or the hypervisor.

Mitigation

Update xen package to version 4.17.5+23-ga4e5191dc0-1.

Vulnerable software versions

Debian Linux: All versions

xen (Debian package): before 4.17.5+23-ga4e5191dc0-1

CPE2.3

External links

http://lists.debian.org/debian-security-announce/2024/msg00252.html

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated privileged user via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

9) Resource management error

EUVDB-ID: #VU96007

Risk: Medium

CVSSv4.0: 6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2024-31146

CWE-ID: CWE-399 - Resource Management Errors

Exploit availability: No

Description

The vulnerability allows a malicious guest to escalate privileges on the system.

The vulnerability exists due to improper management of shared resources when using PCI pass-through. A malicious guest can escalate privileges on the system.

Mitigation

Update xen package to version 4.17.5+23-ga4e5191dc0-1.

Vulnerable software versions

Debian Linux: All versions

xen (Debian package): before 4.17.5+23-ga4e5191dc0-1

CPE2.3

External links

http://lists.debian.org/debian-security-announce/2024/msg00252.html

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated privileged user via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

10) Deadlock

EUVDB-ID: #VU97680

Risk: Low

CVSSv4.0: 4.3 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2024-45817

CWE-ID: CWE-833 - Deadlock

Exploit availability: No

Description

The vulnerability allows a local user to perform a denial of service attack (DoS) on the target system.

The vulnerability exists due to a deadlock within the vlapic_error() function. A buggy or malicious HVM or PVH guest can deadlock Xen and perform a denial of service attack.

Mitigation

Update xen package to version 4.17.5+23-ga4e5191dc0-1.

Vulnerable software versions

Debian Linux: All versions

xen (Debian package): before 4.17.5+23-ga4e5191dc0-1

CPE2.3

External links

http://lists.debian.org/debian-security-announce/2024/msg00252.html

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

11) Improper locking

EUVDB-ID: #VU100325

Risk: Medium

CVSSv4.0: 4.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2024-45818

CWE-ID: CWE-667 - Improper Locking

Exploit availability: No

Description

The vulnerability allows a malicious guest to perform a denial of service attack (DoS) on the target system.

The vulnerability exists due to improper locking in standard VGA implementation. A malicious guest can cause a deadlock and perform a denial of service attack against the entire host.

Mitigation

Update xen package to version 4.17.5+23-ga4e5191dc0-1.

Vulnerable software versions

Debian Linux: All versions

xen (Debian package): before 4.17.5+23-ga4e5191dc0-1

CPE2.3

External links

http://lists.debian.org/debian-security-announce/2024/msg00252.html

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

12) Memory leak

EUVDB-ID: #VU100327

Risk: Medium

CVSSv4.0: 5.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2024-45819

CWE-ID: CWE-401 - Missing release of memory after effective lifetime

Exploit availability: No

Description

The vulnerability allows a malicious guest to gain access to sensitive information.

The vulnerability exists due data leak in libxl related to how PBH guests work with ACPI tables. A malicious guest can access sensitive information pertaining to the host, control domain, or other guests.

Mitigation

Update xen package to version 4.17.5+23-ga4e5191dc0-1.

Vulnerable software versions

Debian Linux: All versions

xen (Debian package): before 4.17.5+23-ga4e5191dc0-1

CPE2.3

External links

http://lists.debian.org/debian-security-announce/2024/msg00252.html

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

Risk	Medium
Patch available	YES
Number of vulnerabilities	12
CVE-ID	CVE-2023-28746 CVE-2023-46841 CVE-2023-46842 CVE-2024-2193 CVE-2024-2201 CVE-2024-31142 CVE-2024-31143 CVE-2024-31145 CVE-2024-31146 CVE-2024-45817 CVE-2024-45818 CVE-2024-45819
CWE-ID	CWE-200 CWE-399 CWE-20 CWE-362 CWE-1037 CWE-843 CWE-667 CWE-388 CWE-833 CWE-401
Exploitation vector	Network
Public exploit	N/A
Vulnerable software	Debian Linux Operating systems & Components / Operating system xen (Debian package) Operating systems & Components / Operating system package or component
Vendor	Debian