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CVE-2008-5396

18
FAUCET Score

CVE-2008-5396 is an array index error in the Zaptel (DAHDI) 1.4.11 and earlier drivers, specifically affecting torisa.c and dahdi/tor2.c, which are used in Asterisk systems. This vulnerability allows local users in the 'dialout' group to overwrite kernel memory by writing to /dev/zap/ctl, due to insufficient validation of the sync field within the ZT_SPANCONFIG ioctl. With a CVSS score of 7.2, it is considered high severity, indicating a local attack vector with low complexity that could lead to complete compromise of confidentiality, integrity, and availability. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage, suggesting it is not currently a prominent threat.

Impacted Technologies

VendorProductVersion(s)CPE
<= 1.4.11CPE matchmatch criteria
cpe:2.3:a:asterisk:zaptel:*:*:*:*:*:*:*:*
1.2CPE matchmatch criteria
cpe:2.3:a:asterisk:zaptel:1.2:*:*:*:*:*:*:*
1.2.27CPE matchmatch criteria
cpe:2.3:a:asterisk:zaptel:1.2.27:*:*:*:*:*:*:*
1.4CPE matchmatch criteria
cpe:2.3:a:asterisk:zaptel:1.4:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

7.2HIGH

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

Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
Access Vector
LOCAL
Access Complexity
LOW
Authentication
NONE
Exploitability Score
3.9
Impact Score
10.0
CvssVersion
2.0

Exploit Intelligence

EPSS Score
0.35%
Probability of exploitation in next 30 days
EPSS Percentile
27.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0035 is in the 27th percentile among its peer group of 3,237 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 0.5 GitHub mentions.

Media 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

Vendor Advisories (1)

redhatCVE-2008-5396Low

zaptel: Array index error in multiple zaptel drivers

Nov 23, 2008

References

bugs.debian.org / cgi-bin/bugreport.cgi
bugs.digium.com / view.php
secunia.com / advisories/32947
secunia.com / advisories/32960
openwall.com / lists/oss-security/2008/12/03/10