CVE-2011-2665 is a denial-of-service vulnerability affecting Digium Asterisk Open Source versions 1.8.x before 1.8.4.3. A remote attacker can trigger a NULL pointer dereference and crash the daemon by sending a specially crafted SIP packet with a Contact header missing a less-than character. This vulnerability has a CVSS score of 5.0, indicating a medium severity with low attack complexity and no authentication required, leading to a denial of service. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage, suggesting it is not widely targeted.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
1.8.0CPE matchmatch criteria | cpe:2.3:a:digium:asterisk:1.8.0:*:*:*:*:*:*:* | ||
1.8.0CPE matchmatch criteria | cpe:2.3:a:digium:asterisk:1.8.0:beta1:*:*:*:*:*:* | ||
1.8.0CPE matchmatch criteria | cpe:2.3:a:digium:asterisk:1.8.0:beta2:*:*:*:*:*:* | ||
1.8.0CPE matchmatch criteria | cpe:2.3:a:digium:asterisk:1.8.0:beta3:*:*:*:*:*:* | ||
1.8.0CPE matchmatch criteria | cpe:2.3:a:digium:asterisk:1.8.0:beta4:*:*:*:*:*:* |
CVSS version used by this source: 2.0
AV:N/AC:L/Au:N/C:N/I:N/A:P
The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.4 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.
Remediation records are not available for this CVE.