Multiple vulnerabilities in Dell EMC NetWorker vProxy
| Risk | High |
| Patch available | YES |
| Number of vulnerabilities | 2 |
| CVE-ID | CVE-2022-0847 CVE-2022-0778 |
| CWE-ID | CWE-908 CWE-835 |
| Exploitation vector | Network |
| Public exploit |
Vulnerability #1 is being exploited in the wild. Public exploit code for vulnerability #2 is available. |
| Vulnerable software |
Dell EMC NetWorker vProxy Server applications / IDS/IPS systems, Firewalls and proxy servers |
| Vendor | Dell |
Security Bulletin
This security bulletin contains information about 2 vulnerabilities.
1) Use of uninitialized resource
EUVDB-ID: #VU61110
Risk: Low
CVSSv4.0: 8.5 [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:A/U:Clear]
CVE-ID: CVE-2022-0847
CWE-ID:
CWE-908 - Use of Uninitialized Resource
Exploit availability: Yes
DescriptionThe vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to usage of an uninitialized resources. A local user can overwrite arbitrary file in the page cache, even if the file is read-only, and execute arbitrary code on the system with elevated privileges.
The vulnerability was dubbed Dirty Pipe.
Install update from vendor's website.
Vulnerable software versionsDell EMC NetWorker vProxy: 4.3.0 - 4.3.0-17
CPE2.3- cpe:2.3:a:dell:dell_emc_networker_vproxy:4.3.0:*:*:*:*:*:*:*
- cpe:2.3:a:dell:dell_emc_networker_vproxy:4.3.0-1:*:*:*:*:*:*:*
- cpe:2.3:a:dell:dell_emc_networker_vproxy:4.3.0-2:*:*:*:*:*:*:*
https://www.dell.com/support/kbdoc/fr-fr/printview/000198849/10/en
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.
How the attacker can exploit this vulnerability?
The attacker would have to send a specially crafted request to the affected application in order to exploit this vulnerability.
The attacker would have to login to the system and perform certain actions in order to exploit this vulnerability.
Is there known malware, which exploits this vulnerability?
Yes. This vulnerability is being exploited in the wild.
2) Infinite loop
EUVDB-ID: #VU61391
Risk: Medium
CVSSv4.0: 7.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:P/U:Green]
CVE-ID: CVE-2022-0778
CWE-ID:
CWE-835 - Loop with Unreachable Exit Condition ('Infinite Loop')
Exploit availability: Yes
DescriptionThe vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to infinite loop within the BN_mod_sqrt() function when processing an ASN.1 certificate that contains elliptic curve public keys in compressed form or explicit elliptic curve parameters with a base point encoded in compressed form. A remote attacker can supply a specially crafted certificate to the TLS server or client, consume all available system resources and cause denial of service conditions.
MitigationInstall update from vendor's website.
Vulnerable software versionsDell EMC NetWorker vProxy: 4.3.0 - 4.3.0-17
CPE2.3- cpe:2.3:a:dell:dell_emc_networker_vproxy:4.3.0:*:*:*:*:*:*:*
- cpe:2.3:a:dell:dell_emc_networker_vproxy:4.3.0-1:*:*:*:*:*:*:*
- cpe:2.3:a:dell:dell_emc_networker_vproxy:4.3.0-2:*:*:*:*:*:*:*
https://www.dell.com/support/kbdoc/fr-fr/printview/000198849/10/en
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
How the attacker can exploit this vulnerability?
The attacker would have to send a specially crafted request to the affected application in order to exploit this vulnerability.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability. However, proof of concept for this vulnerability is available.
