| Summary | NCR SelfServ ATMs running APTRA XFS 04.02.01 and 05.01.00 implement 512-bit RSA certificates to validate bunch note acceptor (BNA) software updates, which can be broken by an attacker with physical access in a sufficiently short period of time, thereby enabling the attacker to sign arbitrary files and CAB archives used to update BNA software, as well as bypass application whitelisting, resulting in the ability to execute arbitrary code. |
|---|---|
| Publication Date | Aug. 22, 2020, 6:15 a.m. |
| Registration Date | Jan. 26, 2021, 11:50 a.m. |
| Last Update | Nov. 21, 2024, 1:54 p.m. |
| CVSS3.1 : HIGH | |
| スコア | 7.6 |
|---|---|
| Vector | CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H |
| 攻撃元区分(AV) | 物理 |
| 攻撃条件の複雑さ(AC) | 低 |
| 攻撃に必要な特権レベル(PR) | 不要 |
| 利用者の関与(UI) | 不要 |
| 影響の想定範囲(S) | 変更あり |
| 機密性への影響(C) | 高 |
| 完全性への影響(I) | 高 |
| 可用性への影響(A) | 高 |
| CVSS2.0 : MEDIUM | |
| Score | 4.6 |
|---|---|
| Vector | AV:L/AC:L/Au:N/C:P/I:P/A:P |
| 攻撃元区分(AV) | ローカル |
| 攻撃条件の複雑さ(AC) | 低 |
| 攻撃前の認証要否(Au) | 不要 |
| 機密性への影響(C) | 低 |
| 完全性への影響(I) | 低 |
| 可用性への影響(A) | 低 |
| Get all privileges. | いいえ |
| Get user privileges | いいえ |
| Get other privileges | いいえ |
| User operation required | いいえ |
| Configuration1 | or higher | or less | more than | less than | |
| cpe:2.3:o:ncr:aptra_xfs:04.02.01:*:*:*:*:*:*:* | |||||
| cpe:2.3:o:ncr:aptra_xfs:05.01.00:*:*:*:*:*:*:* | |||||
| execution environment | |||||
| 1 | cpe:2.3:h:ncr:selfserv_atm:-:*:*:*:*:*:*:* | ||||