SB2018070401 - Multiple vulnerabilities in OpenBSD
Published: July 4, 2018
Security Bulletin ID
SB2018070401
Severity
Low
Patch available
YES
Number of vulnerabilities
3
Exploitation vector
Remote access
Highest impact
Data manipulation
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 3 secuirty vulnerabilities.
1) Timing attack (CVE-ID: N/A)
The vulnerability allows a remote attacker to conduct timing attack on the target system.
The weakness exists due to DSA and ECDSA signature generation can potentially leak secret information. A remote attacker can conduct a timing side-channel attack and gain access to potentially sensitive information.
2) Information disclosure (CVE-ID: N/A)
The vulnerability allows a remote attacker to obtain potentially sensitive information on the target system.
The weakness exists due to Intel CPUs speculatively access FPU registers even when the FPU is disabled. A remote attacker can use the lazy-save approach and discover data (including AES keys) from previous contexts.
3) Security restrictions bypass (CVE-ID: N/A)
The vulnerability allows a remote attacker to bypass security restrictions on the target system.
The weakness exists due to unspecified flaw. A remote attacker can bypass security restrictions and cause Perl's Archive::Tar module to write files outside of its working directory.
Remediation
Install update from vendor's website.