Multiple vulnerabilities in PHP

1) Buffer overflow

EUVDB-ID: #VU9464

Risk: Low

CVSSv3.1: 4.6 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:U/RL:O/RC:C]

CVE-ID: N/A

CWE-ID: CWE-120 - Buffer overflow

Exploit availability: No

Description

The vulnerability allows a remote attacker to cause DoS condition on the target system.

The weakness exists due to buffer overflow in json_decode(). A remote attacker can supply JSON_INVALID_UTF8_IGNORE or JSON_INVALID string, trigger memory corruption and cause the application to crash.

Successful exploitation of the vulnerability results in denial of service.

Mitigation

Update to version 7.2.0.

Vulnerable software versions

PHP: 7.0.0 - 7.1.11

External links

http://bugs.php.net/bug.php?id=75185

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) Deserialization of untrusted data

EUVDB-ID: #VU9465

Risk: Low

CVSSv3.1: 4.6 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:U/RL:O/RC:C]

CVE-ID: N/A

CWE-ID: CWE-502 - Deserialization of Untrusted Data

Exploit availability: No

Description

The vulnerability allows a remote attacker to cause DoS condition on the target system.

The weakness exists due to deserialization of untrusted data. A remote attacker can supply specially crafted data, trigger deserialization and cause the application to crash.

Successful exploitation of the vulnerability may result in denial of service.

Mitigation

Update to version 7.2.0.

Vulnerable software versions

PHP: 7.0.0 - 7.1.11

External links

http://bugs.php.net/bug.php?id=75054

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) Improper input validation

EUVDB-ID: #VU9466

Risk: Low

CVSSv3.1: 5.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L/E:U/RL:O/RC:C]

CVE-ID: N/A

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a remote attacker to obtain potentially sensitive information or cause DoS condition on the target system.

The weakness exists due to insufficient validation of user-supplied input. A remote attacker can supply a specially crafted .bmp image and gain access to arbitrary data or cause the application to crash.

Mitigation

Update to version 7.2.0.

Vulnerable software versions

PHP: 7.0.0 - 7.1.11

External links

http://bugs.php.net/bug.php?id=75111

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) Type confusion

EUVDB-ID: #VU9467

Risk: Low

CVSSv3.1: 8.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: N/A

CWE-ID: CWE-843 - Type confusion

Exploit availability: No

Description

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

The weakness exists due to type confusion in exif_read_data(). A remote attacker can supply a specially crafted TIFF image, trigger heap overflow in debug mode and execute arbitrary code with elevated privileges.

Successful exploitation of the vulnerability may result in system compromise.

Mitigation

Update to version 7.2.0.

Vulnerable software versions

PHP: 7.0.0 - 7.1.11

External links

http://bugs.php.net/bug.php?id=71534

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.