Vulnerability in github.com/apple/swift-nio-extras (CVE-2022-3252)
Summary
Vulnerability in github.com/apple/swift-nio-extras (CVE-2022-3252). Risk of unauthorized operations or information disclosure. Exploitable via HTTPRequestDecompressor. Mitigation: upgrade to 1.9.2 or later.
Original description
The description as published by the source.
Improper detection of complete HTTP body decompression SwiftNIO Extras provides a pair of helpers for transparently decompressing received HTTP request or response bodies. These two objects (HTTPRequestDecompressor and HTTPResponseDecompressor) both failed to detect when the decompressed body was considered complete. If trailing junk data was appended to the HTTP message body, the code would repeatedly attempt to decompress this data and fail. This would lead to an infinite loop making no forward progress, leading to livelock of the system and denial-of-service. This issue can be triggered by any attacker capable of sending a compressed HTTP message. Most commonly this is HTTP servers, as compressed HTTP messages cannot be negotiated for HTTP requests, but it is possible that users have configured decompression for HTTP requests as well. The attack is low effort, and likely to be reached without requiring any privilege or system access. The impact on availability is high: the process immediately becomes unavailable but does not immediately crash, meaning that it is possible for the process to remain in this state until an administrator intervenes or an automated circuit breaker fires. If left unchecked this issue will very slowly exhaust memory resources due to repeated buffer allocation, but the buffers are not written to and so it is possible that the processes will not terminate for quite some time. This risk can be mitigated by removing transparent HTTP message decompress…
Source: OSV.dev (Open Source Vulnerabilities) NVD GitHub Advisory OSV
Auto-generated summary
Assembled by SecPulse from the source data (CVSS, CWE, affected versions) using templates — no AI involved. Check the original description and references below for exact details.
A vulnerability tracked as CVE-2022-3252 has been found in github.com/apple/swift-nio-extras.
Attackers can target a specific entry point like HTTPRequestDecompressor over the network to misuse the product.
Risk of unauthorized operations or information disclosure.
What to do: upgrade github.com/apple/swift-nio-extras to 1.9.2 or later.
If unsure, ask your IT team or search "github.com/apple/swift-nio-extras CVE-2022-3252" on the vendor's site.
CVE-2022-3252 (github.com/apple/swift-nio-extras) — CWE-835
Attack vector: remote (network-reachable) / unauthenticated / no user interaction
Attack surface: HTTPRequestDecompressor / HTTPResponseDecompressor
Patched: 1.9.2 — apply immediately
Plan: 1) Audit SBOM/dependencies, 2) Stage→prod upgrade, 3) Add WAF/proxy monitoring on affected endpoints, 4) Hunt IOCs in logs.
Refs: see the GHSA / vendor advisory / patched release linked on this page.
A vulnerability (CWE-835) exists in github.com/apple/swift-nio-extras. Attackers reach the vulnerable code path via HTTPRequestDecompressor without authentication.
Check the vendor advisory for the affected versions of github.com/apple/swift-nio-extras. Attack surface: HTTPRequestDecompressor / HTTPResponseDecompressor.
Severity: ?. Risk of unauthorized operations or information disclosure.
Update to 1.9.2.
Until the patch is applied: disable the affected feature, apply WAF rules, or restrict access via network ACLs.
Search webserver/proxy logs for unusual request patterns matching this CVE's known IOCs. Run grep -r 'github.com/apple/swift-nio-extras' . against your dependency files (package-lock.json, requirements.txt, go.sum) to find affected services.
Response actions
Concrete steps and command examples for SOC/SRE teams to execute in order
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1Identify exposure identify
grep -r 'github.com/apple/swift-nio-extras' . | grep -v node_modulesリポジトリと本番環境の依存ファイル (package-lock.json / requirements.txt / go.sum / Gemfile.lock 等) で
github.com/apple/swift-nio-extrasを grep し、稼働しているサービス・バージョンを把握する。 -
2Apply patch patch
Upgrade github.com/apple/swift-nio-extras to 1.9.2ステージング環境で 1.9.2 に上げて回帰テスト → 本番反映。回帰テストはアプリの主要ハッピーパスを含めること。
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3Post-deployment verification verify
Confirm patched version is live in productionパッチ適用後、ステージングで PoC または同等の悪用パターンを再現して脆弱性が閉じたことを確認。本番ではアクセスログ・WAF でアラート再発が無いか継続監視。
Affected packages
References
- advisory github.com
- advisory nvd.nist.gov
- advisory github.com
- package github.com
- web github.com
- web github.com