| Summary | Tor before 0.2.4.20, when OpenSSL 1.x is used in conjunction with a certain HardwareAccel setting on Intel Sandy Bridge and Ivy Bridge platforms, does not properly generate random numbers for (1) relay identity keys and (2) hidden-service identity keys, which might make it easier for remote attackers to bypass cryptographic protection mechanisms via unspecified vectors. |
|---|---|
| Publication Date | Jan. 18, 2014, 6:55 a.m. |
| Registration Date | Jan. 26, 2021, 3:49 p.m. |
| Last Update | Nov. 21, 2024, 11 a.m. |
| CVSS2.0 : MEDIUM | |
| Score | 4.0 |
|---|---|
| Vector | AV:N/AC:H/Au:N/C:P/I:P/A:N |
| 攻撃元区分(AV) | ネットワーク |
| 攻撃条件の複雑さ(AC) | 高 |
| 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) | なし |
| 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:a:torproject:tor:0.2.4.15:rc:*:*:*:*:*:* | |||||
| cpe:2.3:a:torproject:tor:0.2.4.6:alpha:*:*:*:*:*:* | |||||
| cpe:2.3:a:torproject:tor:0.2.4.1:alpha:*:*:*:*:*:* | |||||
| cpe:2.3:a:torproject:tor:0.2.4.2:alpha:*:*:*:*:*:* | |||||
| cpe:2.3:a:torproject:tor:0.2.4.12:alpha:*:*:*:*:*:* | |||||
| cpe:2.3:a:torproject:tor:0.2.4.9:alpha:*:*:*:*:*:* | |||||
| cpe:2.3:a:torproject:tor:0.2.4.4:alpha:*:*:*:*:*:* | |||||
| cpe:2.3:a:torproject:tor:0.2.4.14:alpha:*:*:*:*:*:* | |||||
| cpe:2.3:a:torproject:tor:0.2.4.8:alpha:*:*:*:*:*:* | |||||
| cpe:2.3:a:torproject:tor:0.2.4.17:rc:*:*:*:*:*:* | |||||
| cpe:2.3:a:torproject:tor:0.2.4.13:alpha:*:*:*:*:*:* | |||||
| cpe:2.3:a:torproject:tor:0.2.4.16:rc:*:*:*:*:*:* | |||||
| cpe:2.3:a:torproject:tor:0.2.4.3:alpha:*:*:*:*:*:* | |||||
| cpe:2.3:a:torproject:tor:0.2.4.5:alpha:*:*:*:*:*:* | |||||
| cpe:2.3:a:torproject:tor:0.2.4.18:rc:*:*:*:*:*:* | |||||
| cpe:2.3:a:torproject:tor:0.2.4.11:alpha:*:*:*:*:*:* | |||||
| cpe:2.3:a:torproject:tor:0.2.4.10:alpha:*:*:*:*:*:* | |||||
| cpe:2.3:a:torproject:tor:0.2.4.7:alpha:*:*:*:*:*:* | |||||
| cpe:2.3:a:torproject:tor:*:*:*:*:*:*:*:* | 0.2.4.19 | ||||
| Title | Tor における暗号保護メカニズムを回避される脆弱性 |
|---|---|
| Summary | Tor は、OpenSSL が Intel Sandy Bridge および Ivy Bridge プラットフォーム上の特定の HardwareAccel 設定と組み合わせて使用される場合、(1) relay identity 鍵および (2) hidden-service identity 鍵の乱数を適切に生成しないため、暗号保護メカニズムを回避される脆弱性が存在します。 |
| Possible impacts | 第三者により、暗号保護メカニズムを回避される可能性があります。 |
| Solution | ベンダより正式な対策が公開されています。ベンダ情報を参照して適切な対策を実施してください。 |
| Publication Date | Dec. 22, 2013, midnight |
| Registration Date | Jan. 23, 2014, 12:13 p.m. |
| Last Update | Jan. 23, 2014, 12:13 p.m. |
| The Tor Project |
| Tor 0.2.4.20 未満 |
| No | Changed Details | Date of change |
|---|---|---|
| 0 | [2014年01月23日] 掲載 |
Feb. 17, 2018, 10:37 a.m. |