Security readout for executives and security teams
Plain-English summary
CVE-2022-29228 is an Envoy availability flaw in the OAuth filter. In affected versions, Envoy can crash or suffer memory corruption when that filter continues processing after a local response. The business risk is service disruption for systems relying on vulnerable Envoy deployments.
Executive priority
Treat as a high-priority availability fix where Envoy is in the request path for important services. It is not described as data theft or privilege escalation, but crashes in a proxy can directly affect customer-facing uptime.
Technical view
Envoy versions before 1.22.1 are affected. The OAuth filter incorrectly calls continueDecoding() after sending a local reply, which can trigger an ASSERT() in newer affected builds or corrupt memory in earlier ones. CVSS 3.1 is 7.5, network-accessible, low complexity, no privileges, no user interaction, availability impact only.
Likely exposure
Exposure is likely limited to Envoy deployments running versions earlier than 1.22.1 where the OAuth filter is enabled or reachable in traffic handling. The supplied sources do not identify other affected products or downstream packages.
Exploitation context
The source bundle does not show CISA KEV listing or active exploitation. CVSS indicates a remote, unauthenticated, low-complexity availability issue, but the supplied sources do not provide exploit prevalence or exploitation evidence.
Researcher notes
The root issue is invalid filter-chain continuation after local response emission. Evidence supports CWE-617 reachable assertion, with memory corruption noted for earlier affected versions. The supplied sources do not provide proof-of-concept details, active exploitation claims, or named mitigations beyond upgrade.
Mitigation direction
- Upgrade Envoy to version 1.22.1 or later.
- Confirm whether the OAuth filter is enabled in deployed Envoy configurations.
- Prioritize internet-facing or critical traffic-path Envoy instances.
- Check Envoy’s advisory for any newer vendor guidance.
- Do not rely on workarounds; the advisory states none are known.
Validation and detection
- Inventory all Envoy versions and flag versions earlier than 1.22.1.
- Review Envoy configuration for OAuth filter usage.
- Confirm upgraded instances report Envoy 1.22.1 or later.
- Review proxy crash, restart, and assertion logs around OAuth-protected paths.
- Track remediation separately for production and non-production traffic paths.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
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ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-617: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCVE-2022-29228 mapping review
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Open ATT&CK lookup- Severity
- High
- CVSS
- 7.5 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H3.93.6Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
7.5HighVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source materials
- CVE List V5 sourceCVE List V5
- https://github.com/envoyproxy/envoy/security/advisories/GHSA-rww6-8h7g-8jf6CVE reference · x_refsource_CONFIRM
- https://github.com/envoyproxy/envoy/commit/7ffda4e809dec74449ebc330cebb9d2f4ab61360CVE reference · x_refsource_MISC
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Reachable Assertion
Reachable Assertion represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.