Multiple vulnerabilities in Dell EMC NetWorker



Published: 2022-10-19
Risk Medium
Patch available YES
Number of vulnerabilities 3
CVE-ID CVE-2021-33037
CVE-2021-34798
CVE-2021-39275
CWE-ID CWE-444
CWE-476
CWE-119
Exploitation vector Network
Public exploit N/A
Vulnerable software
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EMC NetWorker Server
Server applications / Other server solutions

Vendor Dell

Security Bulletin

This security bulletin contains information about 3 vulnerabilities.

1) Inconsistent interpretation of HTTP requests

EUVDB-ID: #VU55423

Risk: Medium

CVSSv3.1:

CVE-ID: CVE-2021-33037

CWE-ID: CWE-444 - Inconsistent Interpretation of HTTP Requests ('HTTP Request Smuggling')

Exploit availability: No

Description

The vulnerability allows a remote attacker to preform HTTP request smuggling attacks.

The vulnerability exists due to improper validation of HTTP requests, related to processing of transfer encoding headers.  A remote attacker can send a specially crafted HTTP request to the server and smuggle arbitrary HTTP headers.

Successful exploitation of vulnerability may allow an attacker to poison HTTP cache and perform phishing attacks.

Mitigation

Install update from vendor's website.

Vulnerable software versions

EMC NetWorker Server: before 19.6.0


CPE2.3 External links

http://www.dell.com/support/kbdoc/en-us/000195106/dsa-2021-288-dell-emc-networker-security-update-for-multiple-third-party-vulnerabilities


Q & A

Can this vulnerability be exploited remotely?

Is there known malware, which exploits this vulnerability?

2) NULL pointer dereference

EUVDB-ID: #VU56681

Risk: Medium

CVSSv3.1:

CVE-ID: CVE-2021-34798

CWE-ID: CWE-476 - NULL Pointer Dereference

Exploit availability: No

Description

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

The vulnerability exists due to a NULL pointer dereference error. A remote attacker can send a specially crafted HTTP request to the affected web server and perform a denial of service (DoS) attack.

Mitigation

Install update from vendor's website.

Vulnerable software versions

EMC NetWorker Server: before 19.6.0


CPE2.3 External links

http://www.dell.com/support/kbdoc/en-us/000195106/dsa-2021-288-dell-emc-networker-security-update-for-multiple-third-party-vulnerabilities


Q & A

Can this vulnerability be exploited remotely?

Is there known malware, which exploits this vulnerability?

3) Buffer overflow

EUVDB-ID: #VU56679

Risk: Medium

CVSSv3.1:

CVE-ID: CVE-2021-39275

CWE-ID: CWE-119 - Memory corruption

Exploit availability: No

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system or perform a denial of service attack.

The vulnerability exists due to a boundary error within the ap_escape_quotes()  function. A remote attacker can send a specially crafted request to the web server, trigger memory corruption and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system but requires that the Apache module passes untrusted data to the affected function.

According to vendor, No included modules pass untrusted data to these functions

Mitigation

Install update from vendor's website.

Vulnerable software versions

EMC NetWorker Server: before 19.6.0


CPE2.3 External links

http://www.dell.com/support/kbdoc/en-us/000195106/dsa-2021-288-dell-emc-networker-security-update-for-multiple-third-party-vulnerabilities


Q & A

Can this vulnerability be exploited remotely?

Is there known malware, which exploits this vulnerability?



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