PT-2019-5503 · Isc+1 · Bind+1

Published 2019-05-29 · Updated 2020-08-24 · CVE-2019-6469

Positive Technologies (AI Summary)

CVSS v2.0

7.8

High

Base vector

AV:N/AC:L/Au:N/C:N/I:N/A:C

Name of the Vulnerable Software and Affected Versions BIND versions 9.10.5-S1 through 9.11.6-S1

Description The issue is related to errors in processing responses with malformed RRSIGs in the EDNS Client Subnet (ECS) feature of the BIND DNS server. This can be exploited by a remote attacker to cause a denial of service.

Recommendations For versions 9.10.5-S1 through 9.11.6-S1, update to a version that includes the fix for the EDNS Client Subnet (ECS) feature to prevent the assertion failure when processing malformed RRSIGs. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Assertion Failure

RCE

Weakness Enumeration

CWE-617

CWE-20

Related Identifiers

BDU:2020-03320

CVE-2019-6469

Affected Products

Bind

Bind Server

References · 6

• https://osv.dev/vulnerability/CVE-2019-6469 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2019-6469 · Security Note
• https://bdu.fstec.ru/vul/2020-03320 · Security Note
• https://access.redhat.com/security/cve/cve-2019-6469 · Note
• https://kb.isc.org/docs/cve-2019-6469 · Note
• https://support.f5.com/csp/article/K39751401?utm_source=f5support&amp%3Butm_medium=RSS · Note