| Summary | A res_pjsip_session crash was discovered in Asterisk Open Source 13.x before 13.37.1, 16.x before 16.14.1, 17.x before 17.8.1, and 18.x before 18.0.1. and Certified Asterisk before 16.8-cert5. Upon receiving a new SIP Invite, Asterisk did not return the created dialog locked or referenced. This caused a gap between the creation of the dialog object, and its next use by the thread that created it. Depending on some off-nominal circumstances and timing, it was possible for another thread to free said dialog in this gap. Asterisk could then crash when the dialog object, or any of its dependent objects, were dereferenced or accessed next by the initial-creation thread. Note, however, that this crash can only occur when using a connection-oriented protocol (e.g., TCP or TLS, but not UDP) for SIP transport. Also, the remote client must be authenticated, or Asterisk must be configured for anonymous calling. |
|---|---|
| Publication Date | Nov. 7, 2020, 4:15 a.m. |
| Registration Date | Jan. 26, 2021, 11:56 a.m. |
| Last Update | Nov. 21, 2024, 2:22 p.m. |
| CVSS3.1 : MEDIUM | |
| スコア | 5.3 |
|---|---|
| Vector | CVSS:3.1/AV:N/AC:H/PR:L/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) | 高 |
| 攻撃に必要な特権レベル(PR) | 低 |
| 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 : LOW | |
| Score | 2.1 |
|---|---|
| Vector | AV:N/AC:H/Au:S/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) | 高 |
| 攻撃前の認証要否(Au) | 単一 |
| 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:digium:certified_asterisk:16.8:cert1-rc1:*:*:*:*:*:* | |||||
| cpe:2.3:a:digium:certified_asterisk:16.8:cert1-rc2:*:*:*:*:*:* | |||||
| cpe:2.3:a:digium:certified_asterisk:16.8:cert1-rc3:*:*:*:*:*:* | |||||
| cpe:2.3:a:digium:certified_asterisk:16.8:cert1-rc4:*:*:*:*:*:* | |||||
| cpe:2.3:a:digium:certified_asterisk:16.8:cert2:*:*:*:*:*:* | |||||
| cpe:2.3:a:digium:certified_asterisk:16.8:cert3:*:*:*:*:*:* | |||||
| cpe:2.3:a:digium:certified_asterisk:16.8:cert4:*:*:*:*:*:* | |||||
| cpe:2.3:a:digium:certified_asterisk:16.8:cert4-rc1:*:*:*:*:*:* | |||||
| cpe:2.3:a:digium:certified_asterisk:16.8:cert4-rc2:*:*:*:*:*:* | |||||
| cpe:2.3:a:digium:certified_asterisk:16.8:cert4-rc3:*:*:*:*:*:* | |||||
| cpe:2.3:a:digium:certified_asterisk:16.8:cert4-rc4:*:*:*:*:*:* | |||||
| cpe:2.3:a:digium:certified_asterisk:16.8:-:*:*:*:*:*:* | |||||
| cpe:2.3:a:sangoma:asterisk:*:*:*:*:*:*:*:* | 16.0.0 | 16.14.1 | |||
| cpe:2.3:a:sangoma:asterisk:*:*:*:*:*:*:*:* | 13.0.0 | 13.37.1 | |||
| cpe:2.3:a:sangoma:asterisk:*:*:*:*:*:*:*:* | 18.0.0 | 18.0.1 | |||
| cpe:2.3:a:sangoma:asterisk:*:*:*:*:*:*:*:* | 17.0.0 | 17.8.1 | |||
| Title | Asterisk Open Source および Certified Asterisk におけるリソースの不適切なシャットダウンおよびリリースに関する脆弱性 |
|---|---|
| Summary | Asterisk Open Source および Certified Asterisk には、リソースの不適切なシャットダウンおよびリリースに関する脆弱性が存在します。 |
| 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 | Aug. 31, 2020, midnight |
| Registration Date | June 29, 2021, 5:35 p.m. |
| Last Update | June 29, 2021, 5:35 p.m. |
| Digium |
| Asterisk Open Source 13.37.1 未満の 13.x |
| Asterisk Open Source 16.14.1 未満の 16.x |
| Asterisk Open Source 17.8.1 未満の17.x |
| Asterisk Open Source 18.0.1 未満の18.x |
| Certified Asterisk 16.8-cert5 未満 |
| No | Changed Details | Date of change |
|---|---|---|
| 1 | [2021年06月29日] 掲載 |
June 29, 2021, 5:35 p.m. |