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Related Vulnerabilities: CVE-2021-28683

Envoy before version 1.18.0, and subsequently Istio before version 1.9.3, contains a remotely exploitable NULL pointer dereference and crash in TLS when an unknown TLS alert code is received.

Source

Severity High

Remote Yes

Type Denial of service

Description

Envoy before version 1.18.0, and subsequently Istio before version 1.9.3, contains a remotely exploitable NULL pointer dereference and crash in TLS when an unknown TLS alert code is received.

AVG-1947 istio 1.9.1-2 Critical Vulnerable FS#70808

https://istio.io/latest/news/security/istio-security-2021-003/
https://github.com/envoyproxy/envoy/commit/35783a5559f5e883533fdbe7b913dd63d4dc772e

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