SB20190404109 - Input validation error in bind (Alpine package)
Published: April 4, 2019
Security Bulletin ID
SB20190404109
Severity
Medium
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) Input validation error (CVE-ID: CVE-2018-5744)
The vulnerability allows a remote non-authenticated attacker to perform a denial of service (DoS) attack.
A failure to free memory can occur when processing messages having a specific combination of EDNS options. Versions affected are: BIND 9.10.7 -> 9.10.8-P1, 9.11.3 -> 9.11.5-P1, 9.12.0 -> 9.12.3-P1, and versions 9.10.7-S1 -> 9.11.5-S3 of BIND 9 Supported Preview Edition. Versions 9.13.0 -> 9.13.6 of the 9.13 development branch are also affected.
Remediation
Install update from vendor's website.
References
- https://git.alpinelinux.org/aports/commit/?id=3e4647688661ad2aa06d7fc9a324b009c5f210af
- https://git.alpinelinux.org/aports/commit/?id=3142e7931359e784a78891287108e92aefc4393c
- https://git.alpinelinux.org/aports/commit/?id=d6ab6c12b91030e3c1d072ed36e093c2ebbc96cf
- https://git.alpinelinux.org/aports/commit/?id=6a7a5020482526d5f8f38aa59bf9da6e245d2264
- https://git.alpinelinux.org/aports/commit/?id=a72d66cd67f20dec8e4eb3d6f2b387a11a0bfbf8