SB2017092402 - Gentoo update for PHP
Published: September 24, 2017 Updated: September 27, 2017
Security Bulletin ID
SB2017092402
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
3
Exploitation vector
Remote access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 3 vulnerabilities.
1) Stack-based buffer overflow (CVE-ID: CVE-2017-11362)
CWE-ID: CWE-121 - Stack-based buffer overflow
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber
The vulnerability allows a remote attacker to execute arbitrary code.
The weakness exists due to stack buffer overflow in line 142 when parsing locale in msgfmt_parse_message(). A remote attacker can trigger an error when passing overtly long slocale into libicu's umsg_open() that may lead to out-of-bounds write and execute arbitrary code with web server privileges.
Successful exploitation of the vulnerability may result in system compromise.
2) Stack-based buffer overflow (CVE-ID: CVE-2017-11628)
CWE-ID: CWE-121 - Stack-based buffer overflow
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber
The vulnerability allows a remote attacker to cause DoS condition or potentially execute arbitrary code.
The weakness exists due to stack buffer overflow in PHP INI parsing API 2 when handling malicious input. A remote attacker can send specially crafted data, trigger stack buffer overflow in zend_ini_do_op() that may lead to out-of-bounds write, cause the application to crash or execute arbitrary code with web server privileges.
Successful exploitation of the vulnerability may result in system compromise.
3) Heap use-after-free error (CVE-ID: CVE-2017-12932)
CWE-ID: CWE-416 - Use After Free
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The weakness exists due to improper use of the hash API for key deletion in a situation with an invalid array size. A remote attacker can use untrusted data to trigger heap use-after-free error in ext/standard/var_unserializer.re and execute arbitrary code with elevated privileges.
Successful exploitation of the vulnerability may result in system compromise.
Remediation
Install update from vendor's website.