CVE-2024-23327 — NULL Pointer Dereference in Envoy

CWE-476 — NULL Pointer Dereference2 documents2 sources
Severity
7.5HIGHNVD
EPSS
0.3%
top 45.61%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
1
Envoyproxy Envoy
Timeline
PublishedFeb 9

Description

Envoy is a high-performance edge/middle/service proxy. When PPv2 is enabled both on a listener and subsequent cluster, the Envoy instance will segfault when attempting to craft the upstream PPv2 header. This occurs when the downstream request has a command type of LOCAL and does not have the protocol block. This issue has been addressed in releases 1.29.1, 1.28.1, 1.27.3, and 1.26.7. Users are advised to upgrade. There are no known workarounds for this vulnerability.

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 Packages2 packages

▶CVEListV5envoyproxy/envoy< 1.26.7+3
▶NVDenvoyproxy/envoy1.26.0 — 1.26.7+3

Patches

Patch: github.com ↗Patch: github.com ↗

📋Vendor Advisories

1
Red Hat
envoy: Crash in proxy protocol when command type of LOCAL↗2024-02-09
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CVE-2024-23327 — NULL Pointer Dereference in Envoy | cvebase