Vulnerability CVE-2007-5636
Published: 2007-10-23   Modified: 2012-02-12

Description:
Buffer overflow in the Nortel UNIStim IP Softphone 2050 allows remote attackers to cause a denial of service (application abort) and possibly execute arbitrary code via a flood of invalid characters to the RTCP port (5678/udp) that triggers a Windows error message, aka "extraneous messaging."

See advisories in our WLB2 database:
Topic
Author
Date
High
Nortel UNIStim IP Softphone Buffer-Overflow
Cyrill Brunschwi...
23.10.2007

Type:

CWE-119

 (Improper Restriction of Operations within the Bounds of a Memory Buffer)

CVSS2 => (AV:N/AC:L/Au:N/C:P/I:P/A:P)

CVSS Base Score
Impact Subscore
Exploitability Subscore
7.5/10
6.4/10
10/10
Exploit range
Attack complexity
Authentication
Remote
Low
No required
Confidentiality impact
Integrity impact
Availability impact
Partial
Partial
Partial
Affected software
Nortel -> Ip softphone 2050 

 References:
http://securityreason.com/securityalert/3271
http://support.nortel.com/go/main.jsp?cscat=BLTNDETAIL&id=655203
http://www.csnc.ch/static/advisory/csnc/nortel_UNIStim_IP_softphone_buffer-overflow_v1.0.txt
http://www.securityfocus.com/archive/1/482476/100/0/threaded
http://www.securityfocus.com/bid/26118
http://www.vupen.com/english/advisories/2007/3540
https://exchange.xforce.ibmcloud.com/vulnerabilities/37256
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