| Summary | The compare_tor_addr_to_addr_policy function in or/policies.c in Tor before 0.2.2.39, and 0.2.3.x before 0.2.3.21-rc, allows remote attackers to cause a denial of service (assertion failure and daemon exit) via a zero-valued port field that is not properly handled during policy comparison. |
|---|---|
| Publication Date | Sept. 15, 2012, 3:55 a.m. |
| Registration Date | Jan. 28, 2021, 3:03 p.m. |
| Last Update | Nov. 21, 2024, 10:42 a.m. |
| CVSS2.0 : MEDIUM | |
| Score | 5.0 |
|---|---|
| Vector | AV:N/AC:L/Au:N/C:N/I:N/A:P |
| 攻撃元区分(AV) | ネットワーク |
| 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) | なし |
| 完全性への影響(I) | なし |
| 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:a:torproject:tor:0.2.0.33:*:*:*:*:*:*:* | |||||
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| cpe:2.3:a:torproject:tor:*:*:*:*:*:*:*:* | 0.2.2.38 | ||||
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| Title | Tor の or/policies.c におけるサービス運用妨害 (DoS) の脆弱性 |
|---|---|
| Summary | Tor の or/policies.c 内の compare_tor_addr_to_addr_policy 関数には、サービス運用妨害 (表明違反および Daemon Exit) 状態となる脆弱性が存在します。 |
| Possible impacts | 第三者により、ポリシー情報を比較している間、適切に処理されないゼロ値の port フィールドを介して、サービス運用妨害 (表明違反および Daemon Exit) 状態に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 | Aug. 25, 2012, midnight |
| Registration Date | Sept. 19, 2012, 2:08 p.m. |
| Last Update | Nov. 15, 2012, 5:12 p.m. |
| The Tor Project |
| Tor 0.2.2.39 未満 |
| Tor 0.2.3.21-rc 未満の 0.2.3.x |
| No | Changed Details | Date of change |
|---|---|---|
| 0 | [2012年09月19日] 掲載 [2012年11月15日] ベンダ情報：openSUSE (openSUSE-SU-2012:1278) を追加 |
Feb. 17, 2018, 10:37 a.m. |