SB2017062607 - Two vulnerabilities in OpenBSD
Published: June 26, 2017
Security Bulletin ID
SB2017062607
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
2
Exploitation vector
Local access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 2 vulnerabilities.
1) Integer overflow (CVE-ID: N/A)
CWE-ID: CWE-190 - Integer overflow
CVSSv4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
The vulnerability allows a local attacker to trigger memory corruption on the target system.
The weakness exists due to integer overflow in the sti(4) display driver. A local attacker can run a specially crafted application to trigger memory corruption.
2) Memory corruption (CVE-ID: N/A)
CWE-ID: CWE-119 - Memory corruption
CVSSv4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
The vulnerability allows a local attacker to cause DoS condition on the target system.
The weakness exists due to memory free error in wsmux_getmux(). A local attacker can trigger memory corruption and cause the kernel to crash.
Successful exploitation of the vulnerability results in denial of service.
Remediation
Install update from vendor's website.