Vulnerability in ktbs.dev/teler (CVE-2020-26213)
Summary
Vulnerability in ktbs.dev/teler (CVE-2020-26213). Risk of unauthorized operations or information disclosure. Exploitable via errors.Exit. Mitigation: upgrade to 0.0.1 or later.
Original description
The description as published by the source.
In teler before version 0.0.1, if you run teler inside a Docker container and encounter errors.Exit function, it will cause denial-of-service (SIGSEGV) because it doesn't get process ID and process group ID of teler properly to kills. The issue is patched in teler 0.0.1 and 0.0.1-dev5.1.
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-2020-26213 has been found in ktbs.dev/teler.
Attackers can target a specific entry point like errors.Exit over the network to misuse the product.
Risk of unauthorized operations or information disclosure.
What to do: upgrade ktbs.dev/teler to 0.0.1 or later.
If unsure, ask your IT team or search "ktbs.dev/teler CVE-2020-26213" on the vendor's site.
CVE-2020-26213 (ktbs.dev/teler) — CWE-476
Attack vector: remote (network-reachable) / unauthenticated / no user interaction
Attack surface: errors.Exit / SIGSEGV
Patched: 0.0.1 — 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-476) exists in ktbs.dev/teler. Attackers reach the vulnerable code path via errors.Exit without authentication.
Check the vendor advisory for the affected versions of ktbs.dev/teler. Attack surface: errors.Exit / SIGSEGV.
Severity: ?. Risk of unauthorized operations or information disclosure.
Update to 0.0.1.
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 'ktbs.dev/teler' . 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 'ktbs.dev/teler' . | 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
ktbs.dev/teler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 ktbs.dev/teler to 0.0.1ステージング環境で 0.0.1 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。
-
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
- package github.com
- patch github.com