Red Hat Software Collections update for rh-php73-php



| Updated: 2024-07-26
Risk High
Patch available YES
Number of vulnerabilities 4
CVE-ID CVE-2021-21703
CVE-2021-21707
CVE-2022-31625
CVE-2022-31626
CWE-ID CWE-787
CWE-20
CWE-908
CWE-119
Exploitation vector Network
Public exploit Public exploit code for vulnerability #1 is available.
Public exploit code for vulnerability #4 is available.
Vulnerable software
 rh-php73-php (Red Hat package)
Operating systems & Components / Operating system package or component

Red Hat Software Collections
Universal components / Libraries / Software for developers

Vendor Red Hat Inc.

Security Bulletin

This security bulletin contains information about 4 vulnerabilities.

1) Out-of-bounds write

EUVDB-ID: #VU57656

Risk: Low

CVSSv4.0: 7.1 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/U:Clear]

CVE-ID: CVE-2021-21703

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

Exploit availability: No

Description

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists in the way PHP handles shared memory access, when using PHP FPM SAPI with main FPM daemon process running as root and child worker processes running as lower-privileged users. A child process can access shared memory with the main process and write to it. As a result, it is possible to cause the root process to conduct invalid memory reads and writes with root privileges. A local user can trigger an out-of-bounds write error and execute arbitrary code on the system with root privileges.



Mitigation

Install updates from vendor's website.

Vulnerable software versions

rh-php73-php (Red Hat package): 7.3.20-1.el7 - 7.3.29-1.el7

Red Hat Software Collections: 1 for RHEL 7

CPE2.3 External links

https://access.redhat.com/errata/RHSA-2022:5491


Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

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: #VU58331

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-2021-21707

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a remote attacker to inject arbitrary XML code.

The vulnerability exists due to insufficient validation of user-supplied input within the simplexml_load_file() PHP function when processing NULL byte character (e.g. %00). A remote attacker can pass specially crafted URL to the application and bypass implemented security restrictions.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

rh-php73-php (Red Hat package): 7.3.20-1.el7 - 7.3.29-1.el7

Red Hat Software Collections: 1 for RHEL 7

CPE2.3 External links

https://access.redhat.com/errata/RHSA-2022:5491


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) Use of uninitialized resource

EUVDB-ID: #VU64232

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-2022-31625

CWE-ID: CWE-908 - Use of Uninitialized Resource

Exploit availability: No

Description

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

The vulnerability exists due to usage of uninitialized array in the pg_query_params() function. A remote attacker with ability to control query parameters can trigger memory corruption and execute arbitrary code on the system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

rh-php73-php (Red Hat package): 7.3.20-1.el7 - 7.3.29-1.el7

Red Hat Software Collections: 1 for RHEL 7

CPE2.3 External links

https://access.redhat.com/errata/RHSA-2022:5491


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) Buffer overflow

EUVDB-ID: #VU64231

Risk: High

CVSSv4.0: 8.2 [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:P/U:Amber]

CVE-ID: CVE-2022-31626

CWE-ID: CWE-119 - Memory corruption

Exploit availability: Yes

Description

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

The vulnerability exists due to a boundary error when processing password in mysqlnd/pdo in mysqlnd_wireprotocol.c. A remote attacker with ability to control password that is passed via PDO to MySQL server can trigger memory corruption and execute arbitrary code on the target system.

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

Mitigation

Install updates from vendor's website.

Vulnerable software versions

rh-php73-php (Red Hat package): 7.3.20-1.el7 - 7.3.29-1.el7

Red Hat Software Collections: 1 for RHEL 7

CPE2.3 External links

https://access.redhat.com/errata/RHSA-2022:5491


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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