CVE-2021-31878
CVSS V2 Medium 4
CVSS V3 Medium 6.5
Description
An issue was discovered in PJSIP in Asterisk before 16.19.1 and before 18.5.1. To exploit, a re-INVITE without SDP must be received after Asterisk has sent a BYE request.
Overview
- CVE ID
- CVE-2021-31878
- Assigner
- cve@mitre.org
- Vulnerability Status
- Analyzed
- Published Version
- 2021-07-30T14:15:16
- Last Modified Date
- 2021-08-07T02:05:55
Weakness Enumerations
CPE Configuration (Product)
| CPE | Vulnerable | Operator | Version Start | Version End |
|---|---|---|---|---|
| cpe:2.3:a:digium:asterisk:16.17.0:*:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:a:digium:asterisk:16.18.0:*:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:a:digium:asterisk:16.19.0:*:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:a:digium:asterisk:18.3.0:*:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:a:digium:asterisk:18.4.0:*:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:a:digium:asterisk:18.5.0:*:*:*:*:*:*:* | 1 | OR |
CVSS Version 2
- Version
- 2.0
- Vector String
- AV:N/AC:L/Au:S/C:N/I:N/A:P
- Access Vector
- NETWORK
- Access Compatibility
- LOW
- Authentication
- SINGLE
- Confidentiality Impact
- NONE
- Integrity Impact
- NONE
- Availability Impact
- PARTIAL
- Base Score
- 4
- Severity
- MEDIUM
- Exploitability Score
- 8
- Impact Score
- 2.9
CVSS Version 3
- Version
- 3.1
- Vector String
- CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- Attack Vector
- NETWORK
- Attack Compatibility
- LOW
- Privileges Required
- LOW
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality Impact
- NONE
- Availability Impact
- HIGH
- Base Score
- 6.5
- Base Severity
- MEDIUM
- Exploitability Score
- 2.8
- Impact Score
- 3.6
References
| Reference URL | Reference Tags |
|---|---|
| https://downloads.digium.com/pub/security/AST-2021-007.html | Patch Vendor Advisory |
| http://seclists.org/fulldisclosure/2021/Jul/48 | Mailing List Patch Third Party Advisory |
| http://downloads.asterisk.org/pub/security/AST-2021-007.html | Patch Vendor Advisory |
| http://packetstormsecurity.com/files/163638/Asterisk-Project-Security-Advisory-AST-2021-007.html | Patch Third Party Advisory VDB Entry |
| https://issues.asterisk.org/jira/browse/ASTERISK-29381 | Exploit Issue Tracking Vendor Advisory |
Sources
| Source Name | Source URL |
|---|---|
| NIST | https://nvd.nist.gov/vuln/detail/CVE-2021-31878 |
| MITRE | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-31878 |
History
| Created | Old Value | New Value | Data Type | Notes |
|---|---|---|---|---|
| 2022-05-10 06:58:02 | Added to TrackCVE | |||
| 2022-12-05 07:03:20 | 2021-07-30T14:15Z | 2021-07-30T14:15:16 | CVE Published Date | updated |
| 2022-12-05 07:03:20 | 2021-08-07T02:05:55 | CVE Modified Date | updated | |
| 2022-12-05 07:03:20 | Analyzed | Vulnerability Status | updated |