Ubuntu update for apache2



| Updated: 2022-06-29
Risk High
Patch available YES
Number of vulnerabilities 4
CVE-ID CVE-2022-22719
CVE-2022-22720
CVE-2022-22721
CVE-2022-23943
CWE-ID CWE-20
CWE-444
CWE-190
CWE-787
Exploitation vector Network
Public exploit N/A
Vulnerable software
 Ubuntu
Operating systems & Components / Operating system

apache2-bin (Ubuntu package)
Operating systems & Components / Operating system package or component

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

Vendor Canonical Ltd.

Security Bulletin

This security bulletin contains information about 4 vulnerabilities.

1) Input validation error

EUVDB-ID: #VU61287

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-2022-22719

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 use of uninitialized value in r:parsebody. A remote attacker can pass specially crafted input to the application and perform a denial of service (DoS) attack.

Mitigation

Update the affected package apache2 to the latest version.

Vulnerable software versions

Ubuntu: 18.04 - 21.10

apache2-bin (Ubuntu package): before 2.4.29-1ubuntu4.22

apache2 (Ubuntu package): before 2.4.29-1ubuntu4.22

CPE2.3 External links

https://ubuntu.com/security/notices/USN-5333-1


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) Inconsistent interpretation of HTTP requests

EUVDB-ID: #VU61286

Risk: Medium

CVSSv4.0: 1.2 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2022-22720

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. 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

Update the affected package apache2 to the latest version.

Vulnerable software versions

Ubuntu: 18.04 - 21.10

apache2-bin (Ubuntu package): before 2.4.29-1ubuntu4.22

apache2 (Ubuntu package): before 2.4.29-1ubuntu4.22

CPE2.3 External links

https://ubuntu.com/security/notices/USN-5333-1


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) Integer overflow

EUVDB-ID: #VU61285

Risk: High

CVSSv4.0: 8.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2022-22721

CWE-ID: CWE-190 - Integer overflow

Exploit availability: No

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to integer overflow within the ap_escape_html2() function when parsing LimitXMLRequestBody. A remote attacker can send a specially crafted request to the web server, trigger an integer overflow and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation

Update the affected package apache2 to the latest version.

Vulnerable software versions

Ubuntu: 18.04 - 21.10

apache2-bin (Ubuntu package): before 2.4.29-1ubuntu4.22

apache2 (Ubuntu package): before 2.4.29-1ubuntu4.22

CPE2.3 External links

https://ubuntu.com/security/notices/USN-5333-1


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) Out-of-bounds write

EUVDB-ID: #VU61284

Risk: High

CVSSv4.0: 8.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2022-23943

CWE-ID: CWE-787 - Out-of-bounds write

Exploit availability: No

Description

The vulnerability allows a remote attacker to compromise vulnerable system.

The vulnerability exists due to a boundary error when processing untrusted input in mod_sed. A remote attacker can trigger out-of-bounds write and execute arbitrary code on the target system.

Mitigation

Update the affected package apache2 to the latest version.

Vulnerable software versions

Ubuntu: 18.04 - 21.10

apache2-bin (Ubuntu package): before 2.4.29-1ubuntu4.22

apache2 (Ubuntu package): before 2.4.29-1ubuntu4.22

CPE2.3 External links

https://ubuntu.com/security/notices/USN-5333-1


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.



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