SB2018030402 - NULL pointer dereference in tor (Alpine package)
Published: March 4, 2018
Security Bulletin ID
SB2018030402
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) NULL pointer dereference (CVE-ID: CVE-2018-0490)
The vulnerability allows a remote attacker to cause DoS condition on the target system.The weakness exists in the directory-authority protocol-list subprotocol implementation due to NULL pointer dereference. A remote attacker can cause the service to crash via a misformatted relay descriptor that is mishandled during voting.
Remediation
Install update from vendor's website.
References
- https://git.alpinelinux.org/aports/commit/?id=d17a014c3419283d71293e0cd45a8c7178393632
- https://git.alpinelinux.org/aports/commit/?id=2185d3b8d25a0f2e63d09e74b9c29683ef41bc2d
- https://git.alpinelinux.org/aports/commit/?id=53f4e4e2a7a04028c529a6ac04f59cd54ee834c4
- https://git.alpinelinux.org/aports/commit/?id=e9d50cc6a8aa0e01b165e72e71da208450ade693