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CVE-2020-8618

A buffer boundary check assertion in rdataset.c can fail incorrectly during zone transfer

MEDIUM
4.9
CVSS Score
Published: June 17, 2020 at 09:20 PM UTC
Updated: June 17, 2026 at 03:26 AM UTC
4 products affected across 4 vendorsUbuntu LinuxLeapBIND

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Severity
MEDIUM4.9
Exploit prediction
EPSS 2%

Description

An attacker who is permitted to send zone data to a server via zone transfer can exploit this to intentionally trigger the assertion failure with a specially constructed zone, denying service to clients.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

References (5)

Vendor Advisoryx_refsource_SUSEMailing ListThird Party Advisory
Source: [email protected]
http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00041.html
Vendor Advisoryx_refsource_SUSEMailing ListThird Party Advisory
Source: [email protected]
http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00044.html
x_refsource_CONFIRMVendor Advisory
Source: [email protected]
https://kb.isc.org/docs/cve-2020-8618
x_refsource_CONFIRMThird Party Advisory
Source: [email protected]
https://security.netapp.com/advisory/ntap-20200625-0003/
Vendor Advisoryx_refsource_UBUNTUThird Party Advisory
Source: [email protected]
https://usn.ubuntu.com/4399-1/

CVSS

4.9MEDIUMisc
Attack Vector
NETWORK
Complexity
LOW
Privileges
HIGH
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-617

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