SB2018091805 - Ubuntu update for PHP
Published: September 18, 2018 Updated: December 29, 2018
Security Bulletin ID
SB2018091805
Severity
Low
Patch available
YES
Number of vulnerabilities
3
Exploitation vector
Remote access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 3 secuirty vulnerabilities.
1) Resource exhaustion (CVE-ID: CVE-2015-9253)
The vulnerability allows a remote attacker to cause DoS condition on the target system.The weakness exists in the php-fpm master process due to improper processing of crafted PHP scripts. A remote attacker can send a specially crafted PHP script, trigger the php-fpm master process to restart a child process and cause the php-fpm master process the php-fpm master process to consume all available CPU resources and excessive amounts of disk space that results in denial of service.
2) Heap-based buffer overflow (CVE-ID: CVE-2018-14851)
The vulnerability allows a remote attacker to cause DoS condition on the target system.The weakness exists due to heap-based buffer overflow (READ of size 48) while reading exif data. A remote attacker can trigger memory corruption and cause the service to crash.
3) Memory corruption (CVE-ID: CVE-2018-14883)
The vulnerability allows a remote attacker to cause DoS condition on the target system.The weakness exists due to integer overflow when processing exif_read_data in any 32-bit system. A remote attacker can trigger heap-based buffer overflow in exif_thumbnail_extract of exif.c and cause the service to crash.
Remediation
Install update from vendor's website.