CVE-2020-35776
MEDIUM
6.5
CVSS Score
Published: February 18, 2021 at 07:57 PM UTC
Updated: June 17, 2026 at 03:14 AM UTC
1 product affected across 1 vendorAsterisk
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Severity
MEDIUM6.5
Exploit prediction
EPSS 4%
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.
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
References (5)
x_refsource_MISCPatchThird Party Advisory
Source: [email protected]
http://packetstormsecurity.com/files/161470/Asterisk-Project-Security-Advisory-AST-2021-001.htmlMailing Listx_refsource_FULLDISCThird Party Advisory
Source: [email protected]
http://seclists.org/fulldisclosure/2021/Feb/57x_refsource_CONFIRMVendor Advisory
Source: [email protected]
https://downloads.asterisk.org/pub/security/AST-2021-001.htmlx_refsource_CONFIRMExploitIssue TrackingPatchVendor Advisory
Source: [email protected]
https://issues.asterisk.org/jira/browse/ASTERISK-29227CVSS
- Attack Vector
- NETWORK
- Complexity
- LOW
- Privileges
- NONE
- User Interaction
- REQUIRED
- Scope
- UNCHANGED
- Confidentiality
- NONE
- Integrity
- NONE
- Availability
- HIGH
Vector?
Quick Info
StatusMODIFIED
CWE
CWE-120
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