Multiple vulnerabilities in Citrix XenServer
| Risk | Medium |
| Patch available | YES |
| Number of vulnerabilities | 3 |
| CVE-ID | CVE-2023-46842 CVE-2024-2201 CVE-2024-31142 |
| CWE-ID | CWE-20 CWE-1037 CWE-843 |
| Exploitation vector | Network |
| Public exploit | N/A |
| Vulnerable software |
Citrix XenServer Server applications / Other server solutions |
| Vendor | Citrix |
Security Bulletin
This security bulletin contains information about 3 vulnerabilities.
1) 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
DescriptionThe 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.
MitigationInstall update from vendor's website.
Vulnerable software versionsCitrix XenServer: All versions
CPE2.3 External linkshttps://support.citrix.com/article/CTX633151
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.
2) 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
DescriptionThe 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.
Install update from vendor's website.
Vulnerable software versionsCitrix XenServer: All versions
CPE2.3 External linkshttps://support.citrix.com/article/CTX633151
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.
3) 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
DescriptionThe 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.
Install update from vendor's website.
Vulnerable software versionsCitrix XenServer: All versions
CPE2.3 External linkshttps://support.citrix.com/article/CTX633151
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.
