Debian update for php7.4
| Risk | High |
| Patch available | YES |
| Number of vulnerabilities | 4 |
| CVE-ID | CVE-2022-31628 CVE-2022-31629 CVE-2022-31630 CVE-2022-37454 |
| CWE-ID | CWE-835 CWE-254 CWE-125 CWE-190 |
| Exploitation vector | Network |
| Public exploit |
Public exploit code for vulnerability #2 is available. Public exploit code for vulnerability #4 is available. |
| Vulnerable software Subscribe |
Debian Linux Operating systems & Components / Operating system php7.4 (Debian package) Operating systems & Components / Operating system package or component |
| Vendor | Debian |
Security Bulletin
This security bulletin contains information about 4 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.
MitigationUpdate php7.4 package to version 7.4.33-1+deb11u1.
Vulnerable software versionsDebian Linux: All versions
php7.4 (Debian package): before 7.4.33-1+deb11u1
External linkshttp://www.debian.org/security/2022/dsa-5277
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.
MitigationUpdate php7.4 package to version 7.4.33-1+deb11u1.
Vulnerable software versionsDebian Linux: All versions
php7.4 (Debian package): before 7.4.33-1+deb11u1
External linkshttp://www.debian.org/security/2022/dsa-5277
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) Out-of-bounds read
EUVDB-ID: #VU68886
Risk: Medium
CVSSv3.1: 4.6 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C]
CVE-ID: CVE-2022-31630
CWE-ID:
CWE-125 - Out-of-bounds read
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to gain access to potentially sensitive information.
The vulnerability exists due to a boundary condition within the imageloadfont() function. A remote attacker can pass specially crafted data to the web application, trigger an out-of-bounds read error and read contents of memory on the system.
MitigationUpdate php7.4 package to version 7.4.33-1+deb11u1.
Vulnerable software versionsDebian Linux: All versions
php7.4 (Debian package): before 7.4.33-1+deb11u1
External linkshttp://www.debian.org/security/2022/dsa-5277
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) Integer overflow
EUVDB-ID: #VU68887
Risk: High
CVSSv3.1: 8.8 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C]
CVE-ID: CVE-2022-37454
CWE-ID:
CWE-190 - Integer overflow
Exploit availability: Yes
DescriptionThe vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to integer overflow within the Keccak XKCP SHA-3 reference implementation. A remote attacker can pass specially crafted data to the application, trigger an integer overflow and execute arbitrary code on the target system or eliminate expected cryptographic properties.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
MitigationUpdate php7.4 package to version 7.4.33-1+deb11u1.
Vulnerable software versionsDebian Linux: All versions
php7.4 (Debian package): before 7.4.33-1+deb11u1
External linkshttp://www.debian.org/security/2022/dsa-5277
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.
