| Summary | A vulnerability in the implementation of Session Initiation Protocol (SIP) functionality in Cisco Small Business SPA50x, SPA51x, and SPA52x Series IP Phones could allow an unauthenticated, remote attacker to cause an affected device to become unresponsive, resulting in a denial of service (DoS) condition. The vulnerability is due to the improper handling of SIP request messages by an affected device. An attacker could exploit this vulnerability by using formatted specifiers in a SIP payload that is sent to an affected device. A successful exploit could allow the attacker to cause the affected device to become unresponsive, resulting in a DoS condition that persists until the device is restarted manually. This vulnerability affects Cisco Small Business SPA50x, SPA51x, and SPA52x Series IP Phones that are running firmware release 7.6.2SR1 or earlier. Cisco Bug IDs: CSCvc63986. |
|---|---|
| Publication Date | Oct. 19, 2017, 5:29 p.m. |
| Registration Date | Jan. 26, 2021, 1:13 p.m. |
| Last Update | Nov. 21, 2024, 12:09 p.m. |
| CVSS3.0 : HIGH | |
| スコア | 7.5 |
|---|---|
| Vector | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| 攻撃元区分(AV) | ネットワーク |
| 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) | 変更なし |
| 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) | 高 |
| 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:o:cisco:spa_501g_firmware:*:sr1:*:*:*:*:*:* | 7.6.2 | ||||
| execution environment | |||||
| 1 | cpe:2.3:h:cisco:spa_501g:-:*:*:*:*:*:*:* | ||||
| Configuration2 | or higher | or less | more than | less than | |
| cpe:2.3:o:cisco:spa_502g_firmware:*:sr1:*:*:*:*:*:* | 7.6.2 | ||||
| execution environment | |||||
| 1 | cpe:2.3:h:cisco:spa_502g:-:*:*:*:*:*:*:* | ||||
| Configuration3 | or higher | or less | more than | less than | |
| cpe:2.3:o:cisco:spa_504g_firmware:*:sr1:*:*:*:*:*:* | 7.6.2 | ||||
| execution environment | |||||
| 1 | cpe:2.3:h:cisco:spa_504g:-:*:*:*:*:*:*:* | ||||
| Configuration4 | or higher | or less | more than | less than | |
| cpe:2.3:o:cisco:spa_508g_firmware:*:sr1:*:*:*:*:*:* | 7.6.2 | ||||
| execution environment | |||||
| 1 | cpe:2.3:h:cisco:spa_508g:-:*:*:*:*:*:*:* | ||||
| Configuration5 | or higher | or less | more than | less than | |
| cpe:2.3:o:cisco:spa_509g_firmware:*:sr1:*:*:*:*:*:* | 7.6.2 | ||||
| execution environment | |||||
| 1 | cpe:2.3:h:cisco:spa_509g:-:*:*:*:*:*:*:* | ||||
| Configuration6 | or higher | or less | more than | less than | |
| cpe:2.3:o:cisco:spa_512g_firmware:*:sr1:*:*:*:*:*:* | 7.6.2 | ||||
| execution environment | |||||
| 1 | cpe:2.3:h:cisco:spa_512g:-:*:*:*:*:*:*:* | ||||
| Configuration7 | or higher | or less | more than | less than | |
| cpe:2.3:o:cisco:spa_514g_firmware:*:sr1:*:*:*:*:*:* | 7.6.2 | ||||
| execution environment | |||||
| 1 | cpe:2.3:h:cisco:spa_514g:-:*:*:*:*:*:*:* | ||||
| Configuration8 | or higher | or less | more than | less than | |
| cpe:2.3:o:cisco:spa_525g_firmware:*:sr1:*:*:*:*:*:* | 7.6.2 | ||||
| execution environment | |||||
| 1 | cpe:2.3:h:cisco:spa_525g:-:*:*:*:*:*:*:* | ||||
| Title | Cisco Small Business IP Phone におけるバッファエラーの脆弱性 |
|---|---|
| Summary | Cisco Small Business SPA50x、SPA51x、および SPA52x シリーズ IP Phone には、バッファエラーの脆弱性が存在します。 ベンダは、本脆弱性を Bug ID CSCvc63986 として公開しています。 |
| Possible impacts | サービス運用妨害 (DoS) 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 | Oct. 18, 2017, midnight |
| Registration Date | Nov. 13, 2017, 5:05 p.m. |
| Last Update | Nov. 13, 2017, 5:05 p.m. |
| シスコシステムズ |
| Cisco Small Business IP Phone ファームウェア |
| No | Changed Details | Date of change |
|---|---|---|
| 0 | [2017年11月13日] 掲載 |
Feb. 17, 2018, 10:37 a.m. |