CVE-2021-28683 — NULL Pointer Dereference in Envoy

CWE-476 — NULL Pointer Dereference2 documents2 sources
Severity
7.5HIGHNVD
EPSS
0.1%
top 69.86%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
1
Envoyproxy Envoy
Timeline
Latest updateApr 15
PublishedMay 20

Description

An issue was discovered in Envoy through 1.71.1. There is a remotely exploitable NULL pointer dereference and crash in TLS when an unknown TLS alert code is received.

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HExploitability: 3.9 | Impact: 3.6

Affected Packages1 packages

▶NVDenvoyproxy/envoy1.16.2, 1.17.1+1

📋Vendor Advisories

1
Red Hat
envoyproxy/envoy: NULL pointer dereference in TLS alert code handling↗2021-04-15
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CVE-2021-28683 — NULL Pointer Dereference in Envoy | cvebase