Multiple vulnerabilities in HPE HP-UX Apache Web Server

1) Input validation error

EUVDB-ID: #VU93540

Risk: Medium

CVSSv4.0: 5.5 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P/U:Green]

CVE-ID: CVE-2024-38473

CWE-ID: CWE-20 - Improper input validation

Exploit availability: Yes

Description

The vulnerability allows a remote attacker to bypass authentication.

The vulnerability exists due to insufficient validation of user-supplied input when handling incorrect encoding in mod_proxy. A remote attacker can force the web server to pass request URLs with incorrect encoding to backend services.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

HP-UX Apache Web Server: before 2.4.62.00

CPE2.3

cpe:2.3:a:hpe:hp-ux_apache_web_server:*:*:*:*:*:*:*:*

External links

https://lists.apache.org/thread/mcvg3lvl7jb8j539mmzxdg1fvn2nnnq8

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.

2) Input validation error

EUVDB-ID: #VU93544

Risk: Medium

CVSSv4.0: 6.6 [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:U/U:Green]

CVE-ID: CVE-2024-38477

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

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

The vulnerability exists due to insufficient validation of user-supplied input in mod_proxy. A remote attacker can send specially crafted requests to the web server and perform a denial of service (DoS) attack.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

HP-UX Apache Web Server: before 2.4.62.00

CPE2.3

cpe:2.3:a:hpe:hp-ux_apache_web_server:*:*:*:*:*:*:*:*

External links

https://lists.apache.org/thread/zhzq56vjvz6610hycoj471gotljky894

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.

3) Input validation error

EUVDB-ID: #VU93542

Risk: Critical

CVSSv4.0: 9.2 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:A/U:Red]

CVE-ID: CVE-2024-38475

CWE-ID: CWE-20 - Improper input validation

Exploit availability: Yes

Description

The vulnerability allows a remote attacker to compromise the affected system.

The vulnerability exists due to insufficient validation of user-supplied input in mod_rewrite when first segment of substitution matches filesystem path. A remote attacker can map URLs to filesystem locations that are permitted to be served by the server but are not intentionally/directly reachable by any URL and view contents of files or execute arbitrary code.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

HP-UX Apache Web Server: before 2.4.62.00

CPE2.3

cpe:2.3:a:hpe:hp-ux_apache_web_server:*:*:*:*:*:*:*:*

External links

https://lists.apache.org/thread/tzks8jdmh39hbl723d1xq61mcl4ndv13

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?

Yes. This vulnerability is being exploited in the wild.

4) NULL pointer dereference

EUVDB-ID: #VU93538

Risk: Medium

CVSSv4.0: 6.6 [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:U/U:Green]

CVE-ID: CVE-2024-36387

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 when handling websocket over HTTP/2 connections. A remote attacker can send specially crafted data to the web server and perform a denial of service (DoS) attack.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

HP-UX Apache Web Server: before 2.4.62.00

CPE2.3

cpe:2.3:a:hpe:hp-ux_apache_web_server:*:*:*:*:*:*:*:*

External links

https://lists.apache.org/thread/8dslvr98bxcvzxz7cwq6h3q6h2xgk0oo

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.

5) Information disclosure

EUVDB-ID: #VU94504

Risk: Medium

CVSSv4.0: 5.5 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:P/U:Green]

CVE-ID: CVE-2024-40725

CWE-ID: CWE-200 - Exposure of sensitive information to an unauthorized actor

Exploit availability: Yes

Description

The vulnerability allows a remote attacker to gain access to potentially sensitive information.

The vulnerability exists due to an error when processing legacy content-type based configuration of handlers, such as "AddType" and similar configuration when files are requested indirectly. A remote attacker can send a specially crafted HTTP request and view contents of files, for example the source code of a PHP script can be served instead of interpreted.

Note, the vulnerability exists due to incomplete fix for #VU93729 (CVE-2024-39884).

Mitigation

Install updates from vendor's website.

Vulnerable software versions

HP-UX Apache Web Server: before 2.4.62.00

CPE2.3

cpe:2.3:a:hpe:hp-ux_apache_web_server:*:*:*:*:*:*:*:*

External links

https://lists.apache.org/thread/h9znqpns25cjjlcxh3hss7j47nvjypf7

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.

6) Information disclosure

EUVDB-ID: #VU93729

Risk: Medium

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2024-39884

CWE-ID: CWE-200 - Exposure of sensitive information to an unauthorized actor

Exploit availability: No

Description

The vulnerability allows a remote attacker to gain access to potentially sensitive information.

The vulnerability exists due to an error when processing legacy content-type based configuration of handlers, such as "AddType" and similar configuration when files are requested indirectly. A remote attacker can send a specially crafted HTTP request and view contents of files, for example the source code of a PHP script can be served instead of interpreted.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

HP-UX Apache Web Server: before 2.4.62.00

CPE2.3

cpe:2.3:a:hpe:hp-ux_apache_web_server:*:*:*:*:*:*:*:*

External links

https://lists.apache.org/thread/poyw9d9lmthyztj8qxkk5dct6hq5d9fv

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.

7) Input validation error

EUVDB-ID: #VU93541

Risk: Medium

CVSSv4.0: 6.9 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2024-38474

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a remote attacker to compromise the affected system.

The vulnerability exists due to insufficient validation of user-supplied input in mod_rewrite when parsing encoded question marks in backreferences. A remote attacker can execute scripts in directories permitted by the configuration but not directly reachable by any URL or source disclosure of scripts meant to only to be executed as CGI.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

HP-UX Apache Web Server: before 2.4.62.00

CPE2.3

cpe:2.3:a:hpe:hp-ux_apache_web_server:*:*:*:*:*:*:*:*

External links

https://lists.apache.org/thread/tf2nsognb0t1k8gkkvlbjnlk361cyd9q

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.

8) Server-Side Request Forgery (SSRF)

EUVDB-ID: #VU93545

Risk: Medium

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:L/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2024-39573

CWE-ID: CWE-918 - Server-Side Request Forgery (SSRF)

Exploit availability: No

Description

The disclosed vulnerability allows a remote attacker to perform SSRF attacks.

The vulnerability exists due to insufficient validation of user-supplied input in mod_rewrite proxy handler substitution. A remote attacker can cause unsafe RewriteRules to unexpectedly setup URL's to be handled by mod_proxy.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

HP-UX Apache Web Server: before 2.4.62.00

CPE2.3

cpe:2.3:a:hpe:hp-ux_apache_web_server:*:*:*:*:*:*:*:*

External links

https://lists.apache.org/thread/mxcs8l5f9q7dh8sxzwhrpntnt25fpd2t

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.

9) Server-Side Request Forgery (SSRF)

EUVDB-ID: #VU93543

Risk: High

CVSSv4.0: 7.2 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:L/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2024-38476

CWE-ID: CWE-918 - Server-Side Request Forgery (SSRF)

Exploit availability: No

Description

The disclosed vulnerability allows a remote attacker to perform SSRF attacks.

The vulnerability exists due to insufficient validation of user-supplied input. A remote attacker with control over the backend server can run local handlers via internal redirect and gain access to sensitive information or compromise the affected system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

HP-UX Apache Web Server: before 2.4.62.00

CPE2.3

cpe:2.3:a:hpe:hp-ux_apache_web_server:*:*:*:*:*:*:*:*

External links

https://lists.apache.org/thread/p2xfjsvpogyrg4hw9cjs2nrnqnl34qf0

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.

10) HTTP response splitting

EUVDB-ID: #VU88151

Risk: Medium

CVSSv4.0: 1.7 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2023-38709

CWE-ID: CWE-113 - Improper Neutralization of CRLF Sequences in HTTP Headers ('HTTP Response Splitting')

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform HTTP splitting attacks.

The vulnerability exists due to software does not correctly process CRLF character sequences. A malicious or exploitable backend/content generators can send specially crafted response containing CRLF sequence and make the application to send a split HTTP response.

Successful exploitation of the vulnerability may allow an attacker perform cache poisoning attack.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

HP-UX Apache Web Server: before 2.4.62.00

CPE2.3

cpe:2.3:a:hpe:hp-ux_apache_web_server:*:*:*:*:*:*:*:*

External links

https://downloads.apache.org/httpd/CHANGES_2.4
https://httpd.apache.org/security/vulnerabilities_24.html

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.

11) HTTP response splitting

EUVDB-ID: #VU88152

Risk: Medium

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2024-24795

CWE-ID: CWE-113 - Improper Neutralization of CRLF Sequences in HTTP Headers ('HTTP Response Splitting')

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform HTTP splitting attacks.

The vulnerability exists due to software does not correctly process CRLF character sequences in multiple modules. A remote attacker can inject malicious response headers into backend applications and perform an HTTP desynchronization attack.

Successful exploitation of the vulnerability may allow an attacker perform cache poisoning attack.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

HP-UX Apache Web Server: before 2.4.62.00

CPE2.3

cpe:2.3:a:hpe:hp-ux_apache_web_server:*:*:*:*:*:*:*:*

External links

https://httpd.apache.org/security/vulnerabilities_24.html
https://downloads.apache.org/httpd/CHANGES_2.4

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.

12) Resource exhaustion

EUVDB-ID: #VU88153

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-2024-27316

CWE-ID: CWE-400 - Resource exhaustion

Exploit availability: Yes

Description

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

The vulnerability exists due to application does not properly control consumption of internal resources when handling HTTP/2 requests. A remote attacker can send specially crafted HTTP/2 requests to the server and perform a denial of service (DoS) attack.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

HP-UX Apache Web Server: before 2.4.62.00

CPE2.3

cpe:2.3:a:hpe:hp-ux_apache_web_server:*:*:*:*:*:*:*:*

External links

https://httpd.apache.org/security/vulnerabilities_24.html
https://downloads.apache.org/httpd/CHANGES_2.4

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.

Risk	High
Patch available	YES
Number of vulnerabilities	12
CVE-ID	CVE-2024-38473 CVE-2024-38477 CVE-2024-38475 CVE-2024-36387 CVE-2024-40725 CVE-2024-39884 CVE-2024-38474 CVE-2024-39573 CVE-2024-38476 CVE-2023-38709 CVE-2024-24795 CVE-2024-27316
CWE-ID	CWE-20 CWE-476 CWE-200 CWE-918 CWE-113 CWE-400
Exploitation vector	Network
Public exploit	Public exploit code for vulnerability #1 is available. Vulnerability #3 is being exploited in the wild. Public exploit code for vulnerability #5 is available. Public exploit code for vulnerability #12 is available.
Vulnerable software	HP-UX Apache Web Server Server applications / Web servers
Vendor	HPE