Multiple vulnerabilities in PHP
| Risk | Medium |
| Patch available | YES |
| Number of vulnerabilities | 2 |
| CVE-ID | CVE-2022-31628 CVE-2022-31629 |
| CWE-ID | CWE-835 CWE-254 |
| Exploitation vector | Network |
| Public exploit | Public exploit code for vulnerability #2 is available. |
| Vulnerable software Subscribe |
PHP Universal components / Libraries / Scripting languages |
| Vendor | PHP Group |
Security Bulletin
This security bulletin contains information about 2 vulnerabilities.
1) Infinite loop
EUVDB-ID: #VU67755
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-2022-31628
CWE-ID:
CWE-835 - Loop with Unreachable Exit Condition ('Infinite Loop')
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to infinite loop within the phar uncompressor code when processing "quines" gzip files. A remote attacker can pass a specially crafted archive to the application, consume all available system resources and cause denial of service conditions.
MitigationInstall updates from vendor's website.
Vulnerable software versionsPHP: 7.4.0 - 8.1.10
External linkshttp://bugs.php.net/bug.php?id=81726
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) Security features bypass
EUVDB-ID: #VU67756
Risk: Low
CVSSv3.1: 3.8 [CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N/E:P/RL:O/RC:C]
CVE-ID: CVE-2022-31629
CWE-ID:
CWE-254 - Security Features
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to bypass implemented security restrictions.
The vulnerability exists due to the way PHP handles HTTP variable names. A remote attacker can set a standard insecure cookie in the victim's browser which is treated as a `__Host-` or `__Secure-` cookie by PHP applications.
MitigationInstall updates from vendor's website.
Vulnerable software versionsPHP: 7.4.0 - 8.1.10
External linkshttp://bugs.php.net/bug.php?id=81727
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.
