CVE-2008-5744

Description

Array index error in the dahdi/tor2.c driver in Zaptel (aka DAHDI) 1.4.11 and earlier allows local users in the dialout group to overwrite an integer value in kernel memory by writing to /dev/zap/ctl, related to an incorrect tor2 patch for CVE-2008-5396 that uses the wrong variable in a range check against the value of lc->sync.

Affected products

• asterisk / zaptel1.4.11
• asterisk / zaptel1.2 – 1.2
• asterisk / zaptel1.2.27 – 1.2.27
• asterisk / zaptel1.4 – 1.4

References

• MISChttp://bugs.digium.com/view.php?id=13954#96700
• MISChttps://bugzilla.redhat.com/show_bug.cgi?id=475446#c4
• VENDOR_ADVISORYhttp://secunia.com/advisories/32960
• MISChttps://exchange.xforce.ibmcloud.com/vulnerabilities/47666
• MISChttp://svn.digium.com/view/dahdi?view=rev&revision=5590
• MAILING_LISThttp://www.openwall.com/lists/oss-security/2008/12/19/2