CVEvulnerability

CVE-2021-23017

7.7 HIGH Published 2021-06-01 Modified 2026-06-17 Official page ↗
Status
Modified
Published
2021-06-01
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 ([email protected])
7.7 HIGH — CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:L
CVSS 2.0 ([email protected])
6.8 MEDIUM — AV:N/AC:M/Au:N/C:P/I:P/A:P
Weaknesses
CWE-193

Description

A security issue in nginx resolver was identified, which might allow an attacker who is able to forge UDP packets from the DNS server to cause 1-byte memory overwrite, resulting in worker process crash or potential other impact.

Affected configurations

• f5 nginx (>= 0.6.18 < 1.20.1) • openresty openresty (< 1.19.3.2) • fedoraproject fedora 33 • fedoraproject fedora 34 • netapp ontap select deploy administration utility • oracle blockchain platform (< 21.1.2) • oracle communications control plane monitor 3.4 • oracle communications control plane monitor 4.2 • oracle communications control plane monitor 4.3 • oracle communications control plane monitor 4.4 • oracle communications fraud monitor (>= 3.4 <= 4.4) • oracle communications operations monitor 3.4 • oracle communications operations monitor 4.2 • oracle communications operations monitor 4.3 • oracle communications operations monitor 4.4 • oracle communications session border controller 8.4 • oracle communications session border controller 9.0 • oracle enterprise communications broker 3.3.0 • oracle enterprise session border controller 8.4 • oracle enterprise session border controller 9.0 • oracle enterprise telephony fraud monitor 3.4 • oracle enterprise telephony fraud monitor 4.2 • oracle enterprise telephony fraud monitor 4.3 • oracle enterprise telephony fraud monitor 4.4 • oracle goldengate (< 21.4.0.0.0)

Related

Weakness · CWE (1)

  • CWE-193 Off-by-one Error weakness

References