Multiple vulnerabilities in PHP

1) XXE attack

EUVDB-ID: #VU15775

Risk: Low

CVSSv3.1: 6.2 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: N/A

CWE-ID: CWE-611 - Improper Restriction of XML External Entity Reference ('XXE')

Exploit availability: No

Description

The vulnerability allows a remote unauthenticated attacker to conduct XXE-attack.

The vulnerability exists due to entities from the internal dtd are not resolved in element content when using xml_parse_into_struct. A remote attacker can trick the victim into opening an XML file that submits malicious input to gain access to arbitrary data or cause the service to crash.

Mitigation

The vulnerability has been fixed in the versions 7.1.24, 7.2.12.

Vulnerable software versions

PHP: 7.1.0 - 7.2.11

External links

http://bugs.php.net/bug.php?id=76948

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) Segmentation fault

EUVDB-ID: #VU15776

Risk: Low

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: N/A

CWE-ID: CWE-119 - Memory corruption

Exploit availability: No

Description

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

The vulnerability exists due to memory limit error. A remote attacker can trigger segfault in shutdown function and cause the service to crash.

Mitigation

Update to version 7.2.12.

Vulnerable software versions

PHP: 7.2.0 - 7.2.11

External links

http://bugs.php.net/bug.php?id=76846

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) Heap-based buffer overflow

EUVDB-ID: #VU15777

Risk: Low

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: N/A

CWE-ID: CWE-122 - Heap-based Buffer Overflow

Exploit availability: No

Description

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

The vulnerability exists due to heap-based buffer overflow in zif_sodium_pad. A remote attacker can trigger memory corruption and cause the service to crash.

Mitigation

Update to version 7.2.12.

Vulnerable software versions

PHP: 7.2.0 - 7.2.11

External links

http://bugs.php.net/bug.php?id=77008

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) Heap-based buffer overflow

EUVDB-ID: #VU15778

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-122 - Heap-based Buffer Overflow

Exploit availability: No

Description

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

The vulnerability exists due to heap-based buffer overflow in zend_mm. A remote attacker can trigger memory corruption and cause xmlrpc_encode_request() crash.

Mitigation

Update to version 7.2.12.

Vulnerable software versions

PHP: 7.2.0 - 7.2.11

External links

http://bugs.php.net/bug.php?id=75282

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.