SB2020121750 - Multiple vulnerabilities in envoy

Description

This security bulletin contains information about 2 vulnerabilities.

1) Input validation error (CVE-ID: N/A)

CWE-ID: CWE-20 - Improper input validation

CVSSv4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a remote attacker to cause a denial of service.

The vulnerability exists due to improper input validation in udp proxy when processing oversized udp datagrams. A remote attacker can send a specially crafted udp datagram larger than 1500 bytes to cause a denial of service.

2) Input validation error (CVE-ID: N/A)

CWE-ID: CWE-20 - Improper input validation

CVSSv4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N]

The vulnerability allows a remote attacker to cause incorrect logging of the downstream address.

The vulnerability exists due to improper input validation in tcp-proxy when processing proxy-protocol connection information. A remote attacker can send crafted proxy-protocol data to cause incorrect logging of the downstream address.

Remediation

Install update from vendor's website.

References

• https://github.com/envoyproxy/envoy/security/advisories/GHSA-282m-p723-vvxf
• https://github.com/envoyproxy/envoy/security/advisories/GHSA-c856-6wpq-9g6g