Ubuntu.comUB:CVE-2021-26906CVE-2021-26906
4.3 Medium
CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:N/AC:M/Au:N/C:N/I:N/A:P
5.9 Medium
CVSS3
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
0.002 Low
EPSS
Percentile
57.0%
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.
References
packetstormsecurity.com/files/161477/Asterisk-Project-Security-Advisory-AST-2021-005.html
seclists.org/fulldisclosure/2021/Feb/61
downloads.asterisk.org/pub/security/
downloads.asterisk.org/pub/security/AST-2021-005.html
issues.asterisk.org/jira/browse/ASTERISK-29196
launchpad.net/bugs/cve/CVE-2021-26906
nvd.nist.gov/vuln/detail/CVE-2021-26906
security-tracker.debian.org/tracker/CVE-2021-26906
www.cve.org/CVERecord?id=CVE-2021-26906
Related
4.3 Medium
CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:N/AC:M/Au:N/C:N/I:N/A:P
5.9 Medium
CVSS3
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
0.002 Low
EPSS
Percentile
57.0%