Vulnerability Monitor

The vendors, products, and vulnerabilities you care about

CVE-2021-28683

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.

Published

2021-05-20T17:15:07.713

Last Modified

2024-11-21T06:00:08.100

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 7.5 (HIGH)

CVSSv2 Vector

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

Access Vector: NETWORK
Access Complexity: LOW
Authentication: NONE
Confidentiality Impact: NONE
Integrity Impact: NONE
Availability Impact: PARTIAL

Exploitability Score

10.0

Impact Score

2.9

Weaknesses

Type: Primary
CWE-476

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	envoyproxy	envoy	1.16.2	Yes
Application	envoyproxy	envoy	1.17.1	Yes

References

https://blog.envoyproxy.io Vendor Advisory ([email protected])
https://github.com/envoyproxy/envoy/releases Third Party Advisory ([email protected])
https://github.com/envoyproxy/envoy/security/advisories/GHSA-r22g-5f3x-xjgg Not Applicable, Third Party Advisory ([email protected])
https://github.com/envoyproxy/envoy/security/advisories/GHSA-xw4q-6pj2-5gfg Third Party Advisory ([email protected])
https://blog.envoyproxy.io Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://github.com/envoyproxy/envoy/releases Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://github.com/envoyproxy/envoy/security/advisories/GHSA-r22g-5f3x-xjgg Not Applicable, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)