Vulnerability Monitor

The vendors, products, and vulnerabilities you care about

CVE-2021-26906

An issue was discovered in res_pjsip_session.c in Digium Asterisk through 13.38.1; 14.x, 15.x, and 16.x through 16.16.0; 17.x through 17.9.1; and 18.x through 18.2.0, and Certified Asterisk through 16.8-cert5. An SDP negotiation vulnerability in PJSIP allows a remote server to potentially crash Asterisk by sending specific SIP responses that cause an SDP negotiation failure.

Published

2021-02-18T20:15:12.743

Last Modified

2024-11-21T05:57:00.817

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 5.9 (MEDIUM)

CVSSv2 Vector

AV:N/AC:M/Au:N/C:N/I:N/A:P

  • Access Vector: NETWORK
  • Access Complexity: MEDIUM
  • Authentication: NONE
  • Confidentiality Impact: NONE
  • Integrity Impact: NONE
  • Availability Impact: PARTIAL
Exploitability Score

8.6

Impact Score

2.9

Weaknesses
  • Type: Primary
    CWE-404
Affected Vendors & Products
Type Vendor Product Version/Range Vulnerable?
Application digium asterisk < 13.38.2 Yes
Application digium asterisk < 16.16.1 Yes
Application digium asterisk < 17.9.2 Yes
Application digium asterisk < 18.2.1 Yes
Application digium certified_asterisk 16.8 Yes
Application digium certified_asterisk 16.8 Yes
Application digium certified_asterisk 16.8 Yes
Application digium certified_asterisk 16.8 Yes
Application digium certified_asterisk 16.8 Yes
Application digium certified_asterisk 16.8 Yes
Application digium certified_asterisk 16.8 Yes
Application digium certified_asterisk 16.8 Yes
Application digium certified_asterisk 16.8 Yes
Application digium certified_asterisk 16.8 Yes
Application digium certified_asterisk 16.8 Yes
Application digium certified_asterisk 16.8 Yes
Application digium certified_asterisk 16.8 Yes
References