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CVE-2013-5642

19
FAUCET Score

CVE-2013-5642 is a denial-of-service vulnerability affecting Asterisk Open Source, Certified Asterisk, and Asterisk Digiumphones versions 1.8.x, 10.x, and 11.x. An unauthenticated remote attacker can exploit this by sending a specially crafted SIP request with an invalid Session Description Protocol (SDP) to cause a NULL pointer dereference, leading to a segmentation fault and daemon crash. The CVSS score of 5.0 indicates a medium severity, with low attack complexity and no impact on confidentiality or integrity, but a partial impact on availability. There is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
1.8.17.0CPE matchmatch criteria
cpe:2.3:a:digium:asterisk:1.8.17.0:*:*:*:*:*:*:*
1.8.17.0CPE matchmatch criteria
cpe:2.3:a:digium:asterisk:1.8.17.0:rc1:*:*:*:*:*:*
1.8.17.0CPE matchmatch criteria
cpe:2.3:a:digium:asterisk:1.8.17.0:rc2:*:*:*:*:*:*
1.8.17.0CPE matchmatch criteria
cpe:2.3:a:digium:asterisk:1.8.17.0:rc3:*:*:*:*:*:*
1.8.18.0CPE matchmatch criteria
cpe:2.3:a:digium:asterisk:1.8.18.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

5.0MEDIUM

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

Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
2.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
11.65%
Probability of exploitation in next 30 days
EPSS Percentile
95.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.1165 is in the 95th percentile among its peer group of 23,705 CVEs.

Social Chatter

No social media mentions found for this CVE.

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.

Media 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

Remediation records are not available for this CVE.

References

archives.neohapsis.com / archives/bugtraq/2013-08/0174.html
downloads.asterisk.org / pub/security/AST-2013-005.html
PatchVendor Advisory
osvdb.org / 96690
secunia.com / advisories/54534
Vendor Advisory
secunia.com / advisories/54617
issues.asterisk.org / jira/browse/ASTERISK-22007
debian.org / security/2013/dsa-2749
mandriva.com / security/advisories
securityfocus.com / bid/62022
securitytracker.com / id/1028957