| Summary | An issue was discovered in uIP 1.0, as used in Contiki 3.0 and other products. When the Urgent flag is set in a TCP packet, and the stack is configured to ignore the urgent data, the stack attempts to use the value of the Urgent pointer bytes to separate the Urgent data from the normal data, by calculating the offset at which the normal data should be present in the global buffer. However, the length of this offset is not checked; therefore, for large values of the Urgent pointer bytes, the data pointer can point to memory that is way beyond the data buffer in uip_process in uip.c. |
|---|---|
| Publication Date | Dec. 12, 2020, 8:15 a.m. |
| Registration Date | Jan. 26, 2021, 11:54 a.m. |
| Last Update | Nov. 21, 2024, 2:08 p.m. |
| CVSS3.1 : HIGH | |
| スコア | 8.2 |
|---|---|
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/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) | 低 |
| 完全性への影響(I) | なし |
| 可用性への影響(A) | 高 |
| CVSS2.0 : MEDIUM | |
| Score | 6.4 |
|---|---|
| Vector | AV:N/AC:L/Au:N/C:P/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) | 低 |
| 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:uip_project:uip:*:*:*:*:*:*:*:* | 1.0 | ||||
| execution environment | |||||
| 1 | cpe:2.3:o:contiki-os:contiki:*:*:*:*:*:*:*:* | ||||
| Configuration2 | or higher | or less | more than | less than | |
| cpe:2.3:a:open-iscsi_project:open-iscsi:*:*:*:*:*:*:*:* | 2.1.7 | ||||
| Configuration3 | or higher | or less | more than | less than | |
| cpe:2.3:o:siemens:sentron_3va_com100_firmware:*:*:*:*:*:*:*:* | 4.4.1 | ||||
| execution environment | |||||
| 1 | cpe:2.3:h:siemens:sentron_3va_com100:-:*:*:*:*:*:*:* | ||||
| Configuration4 | or higher | or less | more than | less than | |
| cpe:2.3:o:siemens:sentron_3va_com800_firmware:*:*:*:*:*:*:*:* | 4.4.1 | ||||
| execution environment | |||||
| 1 | cpe:2.3:h:siemens:sentron_3va_com800:-:*:*:*:*:*:*:* | ||||
| Configuration5 | or higher | or less | more than | less than | |
| cpe:2.3:o:siemens:sentron_3va_dsp800_firmware:*:*:*:*:*:*:*:* | 4.0 | ||||
| execution environment | |||||
| 1 | cpe:2.3:h:siemens:sentron_3va_dsp800:-:*:*:*:*:*:*:* | ||||
| Configuration6 | or higher | or less | more than | less than | |
| cpe:2.3:o:siemens:sentron_pac2200_clp_firmware:-:*:*:*:*:*:*:* | |||||
| execution environment | |||||
| 1 | cpe:2.3:h:siemens:sentron_pac2200_clp:-:*:*:*:*:*:*:* | ||||
| Configuration7 | or higher | or less | more than | less than | |
| cpe:2.3:o:siemens:sentron_pac2200_firmware:*:*:*:*:*:*:*:* | 3.2.2 | ||||
| execution environment | |||||
| 1 | cpe:2.3:h:siemens:sentron_pac2200:-:*:*:*:*:*:*:* | ||||
| Configuration8 | or higher | or less | more than | less than | |
| cpe:2.3:o:siemens:sentron_pac3200_firmware:*:*:*:*:*:*:*:* | 2.4.7 | ||||
| execution environment | |||||
| 1 | cpe:2.3:h:siemens:sentron_pac3200:-:*:*:*:*:*:*:* | ||||
| Configuration9 | or higher | or less | more than | less than | |
| cpe:2.3:o:siemens:sentron_pac3200t_firmware:*:*:*:*:*:*:*:* | 3.2.2 | ||||
| execution environment | |||||
| 1 | cpe:2.3:h:siemens:sentron_pac3200t:-:*:*:*:*:*:*:* | ||||
| Configuration10 | or higher | or less | more than | less than | |
| cpe:2.3:o:siemens:sentron_pac3220_firmware:*:*:*:*:*:*:*:* | 3.2.0 | ||||
| execution environment | |||||
| 1 | cpe:2.3:h:siemens:sentron_pac3220:-:*:*:*:*:*:*:* | ||||
| Configuration11 | or higher | or less | more than | less than | |
| cpe:2.3:o:siemens:sentron_pac4200_firmware:*:*:*:*:*:*:*:* | 2.3.0 | ||||
| execution environment | |||||
| 1 | cpe:2.3:h:siemens:sentron_pac4200:-:*:*:*:*:*:*:* | ||||