Vulnerability in rust (ALPINE-CVE-2025-15661)

Summary

Vulnerability in rust (ALPINE-CVE-2025-15661). Risk of unauthorized operations or information disclosure. Mitigation: upgrade to 1.96.1-r0 or later.

Original description

The description as published by the source.

libssh2 through 1.11.1, fixed in commit 2dae302, contains an out-of-bounds heap read vulnerability in the sftp_symlink() function in src/sftp.c that allows a malicious SSH server or man-in-the-middle attacker to disclose heap memory contents or cause a crash by sending a crafted SSH_FXP_NAME response. Attackers can supply a link_len value larger than the actual packet data in SSH_FXP_NAME responses for SFTP READLINK and REALPATH operations, triggering a heap buffer over-read of up to target_len minus one bytes due to the missing validation of available packet buffer size before the memcpy operation.

Source: OSV.dev (Open Source Vulnerabilities) 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 ALPINE-CVE-2025-15661 has been found in rust.
Risk of unauthorized operations or information disclosure.
What to do: upgrade rust to 1.96.1-r0 or later.
If unsure, ask your IT team or search "rust ALPINE-CVE-2025-15661" on the vendor's site.

ALPINE-CVE-2025-15661 (rust)
Attack vector: remote (network-reachable) / unauthenticated / no user interaction
Patched: 1.96.1-r0 — 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.

❓ What is the problem

A vulnerability (unclassified) exists in rust.

📍 Affected scope

Check the vendor advisory for the affected versions of rust.

🔥 Severity

Severity: ?. Risk of unauthorized operations or information disclosure.

🔧 How to fix

Update to 1.96.1-r0.

🛡️ Workaround

Until the patch is applied: disable the affected feature, apply WAF rules, or restrict access via network ACLs.

🔍 Detection

Search webserver/proxy logs for unusual request patterns matching this CVE's known IOCs. Run grep -r 'rust' . 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

1
Identify exposure identify
```
grep -r 'rust' . | 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 rust を grep し、稼働しているサービス・バージョンを把握する。
2
Apply patch patch
```
Upgrade rust to 1.96.1-r0
```
ステージング環境で 1.96.1-r0 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。
3
Post-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

Alpine:v3.24 rust

[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.96.1-r0"}]}]

References

advisory security.alpinelinux.org