CVE-2020-35776

CVSS V2 Medium 4.3 CVSS V3 Medium 6.5
Description
A buffer overflow in res_pjsip_diversion.c in Sangoma Asterisk versions 13.38.1, 16.15.1, 17.9.1, and 18.1.1 allows remote attacker to crash Asterisk by deliberately misusing SIP 181 responses.
Overview
  • CVE ID
  • CVE-2020-35776
  • Assigner
  • cve@mitre.org
  • Vulnerability Status
  • Analyzed
  • Published Version
  • 2021-02-18T20:15:12
  • Last Modified Date
  • 2021-02-24T17:43:09
Weakness Enumerations
CWE URL
CWE-120 http://cwe.mitre.org/data/definitions/120.html
CPE Configuration (Product)
CPE Vulnerable Operator Version Start Version End
cpe:2.3:a:digium:asterisk:*:*:*:*:*:*:*:* 1 OR 13.0.0 13.38.1
cpe:2.3:a:digium:asterisk:*:*:*:*:*:*:*:* 1 OR 16.0.0 16.15.1
cpe:2.3:a:digium:asterisk:*:*:*:*:*:*:*:* 1 OR 17.0.0 17.9.1
cpe:2.3:a:digium:asterisk:*:*:*:*:*:*:*:* 1 OR 18.0 18.1.1
CVSS Version 2
  • Version
  • 2.0
  • Vector String
  • AV:N/AC:M/Au:N/C:N/I:N/A:P
  • Access Vector
  • NETWORK
  • Access Compatibility
  • MEDIUM
  • Authentication
  • NONE
  • Confidentiality Impact
  • NONE
  • Integrity Impact
  • NONE
  • Availability Impact
  • PARTIAL
  • Base Score
  • 4.3
  • Severity
  • MEDIUM
  • Exploitability Score
  • 8.6
  • Impact Score
  • 2.9
CVSS Version 3
  • Version
  • 3.1
  • Vector String
  • CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
  • Attack Vector
  • NETWORK
  • Attack Compatibility
  • LOW
  • Privileges Required
  • NONE
  • User Interaction
  • REQUIRED
  • 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
http://seclists.org/fulldisclosure/2021/Feb/57 Mailing List Third Party Advisory
https://downloads.asterisk.org/pub/security/AST-2021-001.html Vendor Advisory
https://issues.asterisk.org/ Issue Tracking Vendor Advisory
https://issues.asterisk.org/jira/browse/ASTERISK-29227 Exploit Issue Tracking Patch Vendor Advisory
http://packetstormsecurity.com/files/161470/Asterisk-Project-Security-Advisory-AST-2021-001.html Patch Third Party Advisory
Sources
Source Name Source URL
NIST https://nvd.nist.gov/vuln/detail/CVE-2020-35776
MITRE https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-35776
History
Created Old Value New Value Data Type Notes
2022-05-10 07:21:54 Added to TrackCVE
2022-12-05 22:23:06 2021-02-18T20:15Z 2021-02-18T20:15:12 CVE Published Date updated
2022-12-05 22:23:06 2021-02-24T17:43:09 CVE Modified Date updated
2022-12-05 22:23:06 Analyzed Vulnerability Status updated