Ubuntu update for apache2
| Risk | High |
| Patch available | YES |
| Number of vulnerabilities | 8 |
| CVE-ID | CVE-2024-36387 CVE-2024-38473 CVE-2024-38474 CVE-2024-38475 CVE-2024-39573 CVE-2024-38476 CVE-2024-38477 CVE-2024-39884 |
| CWE-ID | CWE-476 CWE-20 CWE-918 CWE-200 |
| Exploitation vector | Network |
| Public exploit |
Public exploit code for vulnerability #2 is available. Public exploit code for vulnerability #4 is available. |
| Vulnerable software Subscribe |
Ubuntu Operating systems & Components / Operating system apache2 (Ubuntu package) Operating systems & Components / Operating system package or component |
| Vendor | Canonical Ltd. |
Security Bulletin
This security bulletin contains information about 8 vulnerabilities.
1) NULL pointer dereference
EUVDB-ID: #VU93538
Risk: Medium
CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2024-36387
CWE-ID:
CWE-476 - NULL Pointer Dereference
Exploit availability: No
DescriptionThe 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.
MitigationUpdate the affected package apache2 to the latest version.
Vulnerable software versionsUbuntu: 20.04 - 24.04
apache2 (Ubuntu package): before 2.4.58-1ubuntu8.3
External linkshttp://ubuntu.com/security/notices/USN-6885-2
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
2) Input validation error
EUVDB-ID: #VU93540
Risk: Medium
CVSSv3.1: 4.8 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N/E:P/RL:O/RC:C]
CVE-ID: CVE-2024-38473
CWE-ID:
CWE-20 - Improper input validation
Exploit availability: Yes
DescriptionThe 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.
Update the affected package apache2 to the latest version.
Vulnerable software versionsUbuntu: 20.04 - 24.04
apache2 (Ubuntu package): before 2.4.58-1ubuntu8.3
External linkshttp://ubuntu.com/security/notices/USN-6885-2
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
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.
3) Input validation error
EUVDB-ID: #VU93541
Risk: Medium
CVSSv3.1: 6.4 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N/E:U/RL:O/RC:C]
CVE-ID: CVE-2024-38474
CWE-ID:
CWE-20 - Improper input validation
Exploit availability: No
DescriptionThe 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.
Update the affected package apache2 to the latest version.
Vulnerable software versionsUbuntu: 20.04 - 24.04
apache2 (Ubuntu package): before 2.4.58-1ubuntu8.3
External linkshttp://ubuntu.com/security/notices/USN-6885-2
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
4) Input validation error
EUVDB-ID: #VU93542
Risk: High
CVSSv3.1: 7.3 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C]
CVE-ID: CVE-2024-38475
CWE-ID:
CWE-20 - Improper input validation
Exploit availability: Yes
DescriptionThe 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.
Update the affected package apache2 to the latest version.
Vulnerable software versionsUbuntu: 20.04 - 24.04
apache2 (Ubuntu package): before 2.4.58-1ubuntu8.3
External linkshttp://ubuntu.com/security/notices/USN-6885-2
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
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.
5) Server-Side Request Forgery (SSRF)
EUVDB-ID: #VU93545
Risk: Medium
CVSSv3.1: 6.3 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N/E:U/RL:O/RC:C]
CVE-ID: CVE-2024-39573
CWE-ID:
CWE-918 - Server-Side Request Forgery (SSRF)
Exploit availability: No
DescriptionThe 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.
MitigationUpdate the affected package apache2 to the latest version.
Vulnerable software versionsUbuntu: 20.04 - 24.04
apache2 (Ubuntu package): before 2.4.58-1ubuntu8.3
External linkshttp://ubuntu.com/security/notices/USN-6885-2
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
6) Server-Side Request Forgery (SSRF)
EUVDB-ID: #VU93543
Risk: High
CVSSv3.1: 7.8 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2024-38476
CWE-ID:
CWE-918 - Server-Side Request Forgery (SSRF)
Exploit availability: No
DescriptionThe 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.
Update the affected package apache2 to the latest version.
Vulnerable software versionsUbuntu: 20.04 - 24.04
apache2 (Ubuntu package): before 2.4.58-1ubuntu8.3
External linkshttp://ubuntu.com/security/notices/USN-6885-2
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
7) Input validation error
EUVDB-ID: #VU93544
Risk: Medium
CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2024-38477
CWE-ID:
CWE-20 - Improper input validation
Exploit availability: No
DescriptionThe 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.
MitigationUpdate the affected package apache2 to the latest version.
Vulnerable software versionsUbuntu: 20.04 - 24.04
apache2 (Ubuntu package): before 2.4.58-1ubuntu8.3
External linkshttp://ubuntu.com/security/notices/USN-6885-2
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
8) Information disclosure
EUVDB-ID: #VU93729
Risk: Medium
CVSSv3.1: 4.6 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C]
CVE-ID: CVE-2024-39884
CWE-ID:
CWE-200 - Information exposure
Exploit availability: No
DescriptionThe 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.
Update the affected package apache2 to the latest version.
Vulnerable software versionsUbuntu: 20.04 - 24.04
apache2 (Ubuntu package): before 2.4.58-1ubuntu8.3
External linkshttp://ubuntu.com/security/notices/USN-6885-2
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
