SB2018052501 - Multiple vulnerabilities in PHP
Published: May 25, 2018
Security Bulletin ID
SB2018052501
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
2
Exploitation vector
Remote access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 2 vulnerabilities.
1) Assertion failure (CVE-ID: N/A)
CWE-ID: CWE-617 - Reachable Assertion
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
The vulnerability allows a remote attacker to cause DoS condition on the target system.
The weakness exists due to the try_catch_array allocation is empty and points at the very end of the script memory. A remote attacker can trigger assertion failure in file cache when unserializing empty try_catch_array and cause the service to crash.
2) Heap-based buffer overflow (CVE-ID: N/A)
CWE-ID: CWE-122 - Heap-based Buffer Overflow
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
The vulnerability allows a remote attacker to cause DoS condition on the target system.
The weakness exists due to heap-based buffer overflow. A remote attacker can trigger a memory corruption on exif_read_data and cause the service to crash.
Remediation
Install update from vendor's website.