CVE-2022-39282
説明
A vulnerability was found in FreeRDP where clients on UNIX systems using /parallel command line switch might read uninitialized data and send it to the client's server. The vulnerability allows a remote attacker to gain access to sensitive information.
詳細
FreeRDP based server implementations are not affected.
軽減策
Workaround: Do not use parallel port redirection (/parallel command line switch)
CVSS (Common Vulnerability Scoring System) のスコアの詳細
Info alert:Important note
CVSS scores for open source components depend on vendor-specific factors (e.g. version or build chain). Therefore, Red Hat's score and impact rating can be different from NVD and other vendors. Red Hat remains the authoritative CVE Naming Authority (CNA) source for its products and services (see Red Hat classifications).
CVSS v3 スコアの内訳
| Red Hat | NVD | cve.org | |
|---|---|---|---|
| ベーススコア | 7.5 | 7.5 | N/A |
| 攻撃ベクトル | Network | Network | N/A |
| 攻撃の複雑さ | Low | Low | N/A |
| 必要な権限 | None | None | N/A |
| ユーザー関与レベル | None | None | N/A |
| 範囲 | Unchanged | Unchanged | N/A |
| 機密性 | High | High | N/A |
| 完全性への影響 | None | None | N/A |
| 可用性への影響 | None | None | N/A |
ベクトル
Red Hat: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
NVD: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
脆弱性の原因 (CWE) の理解
Confidentiality
Technical Impact: Read Memory; Read Application Data
When reusing a resource such as memory or a program variable, the original contents of that resource may not be cleared before it is sent to an untrusted party.
Availability
Technical Impact: DoS: Crash, Exit, or Restart
The uninitialized resource may contain values that cause program flow to change in ways that the programmer did not intend.
謝辞
Upstream acknowledges BT5 as the original reporter.
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