Ubuntu update for php7.2
| Risk | High |
| Patch available | YES |
| Number of vulnerabilities | 5 |
| CVE-ID | CVE-2020-7068 CVE-2020-7071 CVE-2021-21702 CVE-2021-21704 CVE-2021-21705 |
| CWE-ID | CWE-416 CWE-20 CWE-476 CWE-121 CWE-918 |
| Exploitation vector | Network |
| Public exploit | Public exploit code for vulnerability #2 is available. |
| Vulnerable software |
Ubuntu Operating systems & Components / Operating system php7.4-cli (Ubuntu package) Operating systems & Components / Operating system package or component php7.4-fpm (Ubuntu package) Operating systems & Components / Operating system package or component php7.4-cgi (Ubuntu package) Operating systems & Components / Operating system package or component libapache2-mod-php7.4 (Ubuntu package) Operating systems & Components / Operating system package or component php7.2-fpm (Ubuntu package) Operating systems & Components / Operating system package or component php7.2-cli (Ubuntu package) Operating systems & Components / Operating system package or component php7.2-cgi (Ubuntu package) Operating systems & Components / Operating system package or component libapache2-mod-php7.2 (Ubuntu package) Operating systems & Components / Operating system package or component |
| Vendor | Canonical Ltd. |
Security Bulletin
This security bulletin contains information about 5 vulnerabilities.
1) Use-after-free
EUVDB-ID: #VU34121
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-2020-7068
CWE-ID:
CWE-416 - Use After Free
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to compromise vulnerable system.
The vulnerability exists due to a use-after-free error in the "phar_parse_zipfile" function. A remote attacker can can cause a denial of service (DoS) condition on the target system.
MitigationUpdate the affected package php7.2 to the latest version.
Vulnerable software versionsUbuntu: 18.04 - 21.04
php7.4-cli (Ubuntu package): before 7.4.3-4ubuntu2.5
php7.4-fpm (Ubuntu package): before 7.4.3-4ubuntu2.5
php7.4-cgi (Ubuntu package): before 7.4.3-4ubuntu2.5
libapache2-mod-php7.4 (Ubuntu package): before 7.4.3-4ubuntu2.5
php7.2-fpm (Ubuntu package): before 7.2.24-0ubuntu0.18.04.8
php7.2-cli (Ubuntu package): before 7.2.24-0ubuntu0.18.04.8
php7.2-cgi (Ubuntu package): before 7.2.24-0ubuntu0.18.04.8
libapache2-mod-php7.2 (Ubuntu package): before 7.2.24-0ubuntu0.18.04.8
CPE2.3- cpe:2.3:o:canonical:ubuntu:18.04:*:*:*:*:*:*:*
- cpe:2.3:o:canonical:ubuntu:20.04:*:*:*:*:*:*:*
- cpe:2.3:o:canonical:ubuntu:20.10:*:*:*:*:*:*:*
- cpe:2.3:o:canonical:ubuntu:21.04:*:*:*:*:*:*:*
- cpe:2.3:o:canonical:php7.4-cli:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:o:canonical:php7.4-fpm:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:o:canonical:php7.4-cgi:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:o:canonical:libapache2-mod-php7.4:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:o:canonical:php7.2-fpm_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:o:canonical:php7.2-cli_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:o:canonical:php7.2-cgi_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:o:canonical:libapache2-mod-php7.2_ubuntu_package:*:*:*:*:*:ubuntu:*:*
https://ubuntu.com/security/notices/USN-5006-1
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) Input validation error
EUVDB-ID: #VU49338
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-2020-7071
CWE-ID:
CWE-20 - Improper input validation
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to bypass implemented security restrictions.
The vulnerability exists due to insufficient validation of URL performed via the "FILTER_VALIDATE_URL" setting. A remote attacker can use the "@" characters in the URL to bypass implemented filter and force the application to accept arbitrary URL instead of the defined by the option.
Example:
http://evel.website@trusted.website
Update the affected package php7.2 to the latest version.
Vulnerable software versionsUbuntu: 18.04 - 21.04
php7.4-cli (Ubuntu package): before 7.4.3-4ubuntu2.5
php7.4-fpm (Ubuntu package): before 7.4.3-4ubuntu2.5
php7.4-cgi (Ubuntu package): before 7.4.3-4ubuntu2.5
libapache2-mod-php7.4 (Ubuntu package): before 7.4.3-4ubuntu2.5
php7.2-fpm (Ubuntu package): before 7.2.24-0ubuntu0.18.04.8
php7.2-cli (Ubuntu package): before 7.2.24-0ubuntu0.18.04.8
php7.2-cgi (Ubuntu package): before 7.2.24-0ubuntu0.18.04.8
libapache2-mod-php7.2 (Ubuntu package): before 7.2.24-0ubuntu0.18.04.8
CPE2.3- cpe:2.3:o:canonical:php7.4-cli:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:o:canonical:php7.4-fpm:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:o:canonical:php7.4-cgi:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:o:canonical:libapache2-mod-php7.4:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:o:canonical:php7.2-fpm_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:o:canonical:php7.2-cli_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:o:canonical:php7.2-cgi_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:o:canonical:libapache2-mod-php7.2_ubuntu_package:*:*:*:*:*:ubuntu:*:*
https://ubuntu.com/security/notices/USN-5006-1
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. However, proof of concept for this vulnerability is available.
3) NULL pointer dereference
EUVDB-ID: #VU50403
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-2021-21702
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 within the SoapClient in PHP. A remote attacker can pass specially crafted data to the application and perform a denial of service (DoS) attack.
MitigationUpdate the affected package php7.2 to the latest version.
Vulnerable software versionsUbuntu: 18.04 - 21.04
php7.4-cli (Ubuntu package): before 7.4.3-4ubuntu2.5
php7.4-fpm (Ubuntu package): before 7.4.3-4ubuntu2.5
php7.4-cgi (Ubuntu package): before 7.4.3-4ubuntu2.5
libapache2-mod-php7.4 (Ubuntu package): before 7.4.3-4ubuntu2.5
php7.2-fpm (Ubuntu package): before 7.2.24-0ubuntu0.18.04.8
php7.2-cli (Ubuntu package): before 7.2.24-0ubuntu0.18.04.8
php7.2-cgi (Ubuntu package): before 7.2.24-0ubuntu0.18.04.8
libapache2-mod-php7.2 (Ubuntu package): before 7.2.24-0ubuntu0.18.04.8
CPE2.3- cpe:2.3:o:canonical:php7.4-cli:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:o:canonical:php7.4-fpm:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:o:canonical:php7.4-cgi:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:o:canonical:libapache2-mod-php7.4:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:o:canonical:php7.2-fpm_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:o:canonical:php7.2-cli_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:o:canonical:php7.2-cgi_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:o:canonical:libapache2-mod-php7.2_ubuntu_package:*:*:*:*:*:ubuntu:*:*
https://ubuntu.com/security/notices/USN-5006-1
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) Stack-based buffer overflow
EUVDB-ID: #VU54566
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:N/SI:N/SA:N/E:U/U:Amber]
CVE-ID: CVE-2021-21704
CWE-ID:
CWE-121 - Stack-based buffer overflow
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to execute arbitrary code on the target system.
Multiple boundary errors exists within firebird_info_cb(), firebird_handle_doer(), firebird_stmt_execute(), and firebird_fetch_blob() function. A remote attacker can pass specially crafted input to the application, trigger a stack-based buffer overflow and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
MitigationUpdate the affected package php7.2 to the latest version.
Vulnerable software versionsUbuntu: 18.04 - 21.04
php7.4-cli (Ubuntu package): before 7.4.3-4ubuntu2.5
php7.4-fpm (Ubuntu package): before 7.4.3-4ubuntu2.5
php7.4-cgi (Ubuntu package): before 7.4.3-4ubuntu2.5
libapache2-mod-php7.4 (Ubuntu package): before 7.4.3-4ubuntu2.5
php7.2-fpm (Ubuntu package): before 7.2.24-0ubuntu0.18.04.8
php7.2-cli (Ubuntu package): before 7.2.24-0ubuntu0.18.04.8
php7.2-cgi (Ubuntu package): before 7.2.24-0ubuntu0.18.04.8
libapache2-mod-php7.2 (Ubuntu package): before 7.2.24-0ubuntu0.18.04.8
CPE2.3- cpe:2.3:o:canonical:php7.4-cli:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:o:canonical:php7.4-fpm:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:o:canonical:php7.4-cgi:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:o:canonical:libapache2-mod-php7.4:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:o:canonical:php7.2-fpm_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:o:canonical:php7.2-cli_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:o:canonical:php7.2-cgi_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:o:canonical:libapache2-mod-php7.2_ubuntu_package:*:*:*:*:*:ubuntu:*:*
https://ubuntu.com/security/notices/USN-5006-1
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.
5) Server-Side Request Forgery (SSRF)
EUVDB-ID: #VU54565
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-2021-21705
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 can send a specially crafted HTTP request, bypass the FILTER_VALIDATE_URL and trick the application to initiate requests to arbitrary systems.
Successful exploitation of this vulnerability may allow a remote attacker gain access to sensitive data, located in the local network or send malicious requests to other servers from the vulnerable system.
MitigationUpdate the affected package php7.2 to the latest version.
Vulnerable software versionsUbuntu: 18.04 - 21.04
php7.4-cli (Ubuntu package): before 7.4.3-4ubuntu2.5
php7.4-fpm (Ubuntu package): before 7.4.3-4ubuntu2.5
php7.4-cgi (Ubuntu package): before 7.4.3-4ubuntu2.5
libapache2-mod-php7.4 (Ubuntu package): before 7.4.3-4ubuntu2.5
php7.2-fpm (Ubuntu package): before 7.2.24-0ubuntu0.18.04.8
php7.2-cli (Ubuntu package): before 7.2.24-0ubuntu0.18.04.8
php7.2-cgi (Ubuntu package): before 7.2.24-0ubuntu0.18.04.8
libapache2-mod-php7.2 (Ubuntu package): before 7.2.24-0ubuntu0.18.04.8
CPE2.3- cpe:2.3:o:canonical:php7.4-cli:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:o:canonical:php7.4-fpm:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:o:canonical:php7.4-cgi:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:o:canonical:libapache2-mod-php7.4:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:o:canonical:php7.2-fpm_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:o:canonical:php7.2-cli_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:o:canonical:php7.2-cgi_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:o:canonical:libapache2-mod-php7.2_ubuntu_package:*:*:*:*:*:ubuntu:*:*
https://ubuntu.com/security/notices/USN-5006-1
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.
