SB20170807105 - Security restrictions bypass in bind (Alpine package)

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Main Vulnerability Database SB20170807105

SB20170807105 - Security restrictions bypass in bind (Alpine package)

Published: August 7, 2017

Security Bulletin ID SB20170807105
Severity
Low
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Remote access
Highest impact Information disclosure

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 security vulnerability.


1) Security restrictions bypass (CVE-ID: CVE-2017-3142)

The vulnerability allows a remote attacker to bypass security restrictions on the target system.

The weakness exists due to an error in TSIG authentication of AXFR and NOTIFY requests. A remote attacker who is able to send and receive messages to an authoritative DNS server and who has knowledge of a valid TSIG key name can send specially crafted request packet, bypass authentication and perform unauthorized zone transfers.

Remediation

Install update from vendor's website.

References