CVE-2020-28327 describes a crash vulnerability in Asterisk Open Source and Certified Asterisk versions, specifically affecting res_pjsip_session. This flaw occurs when a new SIP Invite is received via connection-oriented protocols (TCP/TLS), where a race condition allows another thread to free a dialog object before the creating thread can properly use it, leading to a crash. The vulnerability has a CVSS score of 5.3 (Medium), indicating a network attack vector with high attack complexity, requiring either authenticated access or anonymous calling to be enabled, and resulting in high availability impact. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion surrounding this CVE.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
16.8CPE matchmatch criteria | cpe:2.3:a:digium:certified_asterisk:16.8:-:*:*:*:*:*:* | ||
16.8CPE matchmatch criteria | cpe:2.3:a:digium:certified_asterisk:16.8:cert1-rc1:*:*:*:*:*:* | ||
16.8CPE matchmatch criteria | cpe:2.3:a:digium:certified_asterisk:16.8:cert1-rc2:*:*:*:*:*:* | ||
16.8CPE matchmatch criteria | cpe:2.3:a:digium:certified_asterisk:16.8:cert1-rc3:*:*:*:*:*:* | ||
16.8CPE matchmatch criteria | cpe:2.3:a:digium:certified_asterisk:16.8:cert1-rc4:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.
Remediation records are not available for this CVE.