Multiple vulnerabilities in PHP

Published: 2017-08-03 14:42:12
Severity High
Patch available YES
Number of vulnerabilities 3
CVE ID N/A
CVSSv3 6.3 [CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N/E:U/RL:O/RC:C]
8.7 [CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C]
5.7 [CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L/E:U/RL:O/RC:C]
CWE ID CWE-416
CWE-190
CWE-401
Exploitation vector Network
Public exploit Not available
Vulnerable software PHP
Vulnerable software versions PHP 7.0.21
PHP 7.0.20
PHP 7.0.19
Show more
Vendor URL PHP Group

Security Advisory

1) Use-after-free error

Description

The vulnerability allows a remote attacker to gain access to data in memory.

The weakness exists due to use-after-free error in unserialize() with SplFixedArray. A remote attacker can trigger memory leak and create gadgets to gain full memory read/write access.

Remediation

Update to version 7.0.22.

External links

https://bugs.php.net/bug.php?id=73900

2) Integer overflow

Description

The vulnerability allows a remote attacker to cause DoS condition or execute arbitrary code.

The weakness exists due to integer overflow in oci_bind_array_by_name. A remote attacker can trigger memory corruption, cause the system to crash or execute arbitrary code.

Successful exploitation of the vulnerability may result in system compromise.

Remediation

Update to version 7.0.22.

External links

https://bugs.php.net/bug.php?id=74625

3) Memory leak

Description

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

The weakness exists due to memory leak when handling malicious data. A remote attacker can send a specially crafted XML document, trigger memory leak and cause the application to crash.

Remediation

Update to version 7.0.22.

External links

https://bugs.php.net/bug.php?id=73173

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