Debian update for apache2



| Updated: 2024-07-26
Risk Medium
Patch available YES
Number of vulnerabilities 6
CVE-ID CVE-2023-31122
CVE-2023-38709
CVE-2023-43622
CVE-2023-45802
CVE-2024-24795
CVE-2024-27316
CWE-ID CWE-125
CWE-113
CWE-399
CWE-400
Exploitation vector Network
Public exploit Public exploit code for vulnerability #3 is available.
Public exploit code for vulnerability #6 is available.
Vulnerable software
 Debian Linux
Operating systems & Components / Operating system

apache2 (Debian package)
Operating systems & Components / Operating system package or component

Vendor Debian

Security Bulletin

This security bulletin contains information about 6 vulnerabilities.

1) Out-of-bounds read

EUVDB-ID: #VU82248

Risk: Medium

CVSSv3.1: 5.2 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-31122

CWE-ID: CWE-125 - Out-of-bounds read

Exploit availability: No

Description

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

The vulnerability exists due to a boundary condition within mod_macro module. A remote attacker can send specially crafted requests to the server, trigger an out-of-bounds read error and perform a denial of service (DoS) attack.

Mitigation

Update apache2 package to one of the following versions: 2.4.59-1~deb11u1, 2.4.59-1~deb12u1.

Vulnerable software versions

Debian Linux: All versions

apache2 (Debian package): before 2.4.59-1~deb11u1

CPE2.3 External links

http://lists.debian.org/debian-security-announce/2024/msg00070.html


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) HTTP response splitting

EUVDB-ID: #VU88151

Risk: Medium

CVSSv3.1: 4.7 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:N/E:U/RL:O/RC:C]

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

Update apache2 package to one of the following versions: 2.4.59-1~deb11u1, 2.4.59-1~deb12u1.

Vulnerable software versions

Debian Linux: All versions

apache2 (Debian package): before 2.4.59-1~deb11u1

CPE2.3 External links

http://lists.debian.org/debian-security-announce/2024/msg00070.html


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.

3) Resource management error

EUVDB-ID: #VU82247

Risk: Medium

CVSSv3.1: 6.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:P/RL:O/RC:C]

CVE-ID: CVE-2023-43622

CWE-ID: CWE-399 - Resource Management Errors

Exploit availability: Yes

Description

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

The vulnerability exists due to improper management of internal resources within the server when processing HTTP/2 connections with window size of 0. A remote attacker can exhaust available workers on the server and perform a denial of service (DoS) attack.

Mitigation

Update apache2 package to one of the following versions: 2.4.59-1~deb11u1, 2.4.59-1~deb12u1.

Vulnerable software versions

Debian Linux: All versions

apache2 (Debian package): before 2.4.59-1~deb11u1

CPE2.3 External links

http://lists.debian.org/debian-security-announce/2024/msg00070.html


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.

4) Resource management error

EUVDB-ID: #VU82245

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-2023-45802

CWE-ID: CWE-399 - Resource Management Errors

Exploit availability: No

Description

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

The vulnerability exists due to improper management of internal resources within the server when handling HTTP/2 requests. A remote attacker can send multiple requests to the server and perform a denial of service (DoS) attack.

Mitigation

Update apache2 package to one of the following versions: 2.4.59-1~deb11u1, 2.4.59-1~deb12u1.

Vulnerable software versions

Debian Linux: All versions

apache2 (Debian package): before 2.4.59-1~deb11u1

CPE2.3 External links

http://lists.debian.org/debian-security-announce/2024/msg00070.html


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.

5) HTTP response splitting

EUVDB-ID: #VU88152

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-2024-24795

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

Update apache2 package to one of the following versions: 2.4.59-1~deb11u1, 2.4.59-1~deb12u1.

Vulnerable software versions

Debian Linux: All versions

apache2 (Debian package): before 2.4.59-1~deb11u1

CPE2.3 External links

http://lists.debian.org/debian-security-announce/2024/msg00070.html


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) Resource exhaustion

EUVDB-ID: #VU88153

Risk: Medium

CVSSv3.1: 6.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:P/RL:O/RC:C]

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

Update apache2 package to one of the following versions: 2.4.59-1~deb11u1, 2.4.59-1~deb12u1.

Vulnerable software versions

Debian Linux: All versions

apache2 (Debian package): before 2.4.59-1~deb11u1

CPE2.3 External links

http://lists.debian.org/debian-security-announce/2024/msg00070.html


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.



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