SB2020121029 - Reachable Assertion in pcre (Alpine package)

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Main Vulnerability Database SB2020121029

SB2020121029 - Reachable Assertion in pcre (Alpine package)

Published: December 10, 2020

Security Bulletin ID SB2020121029
Severity
Medium
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Remote access
Highest impact Denial of service

Breakdown by Severity

Medium 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 security vulnerability.


1) Reachable Assertion (CVE-ID: CVE-2020-8619)

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a reachable assertion when processing entries with an asterisk ("*") character in rbtdb.c. Unless a nameserver is providing authoritative service for one or more zones and at least one zone contains an empty non-terminal entry containing an asterisk ("*") character, an attacker with ability to change zone content can trigger assertion failure and perform a denial of service (DoS) attack.

Note, this vulnerability may affect hosting provider that allow users access to domain management functionality.


Remediation

Install update from vendor's website.

References