PT-2007-6646 · Nortel · Nortel Unistim Ip Softphone 2050

Cyrill Brunschwiler · Published 2007-10-23 · Updated 2018-10-15 · CVE-2007-5636

Positive Technologies (AI Summary)

CVSS v2.0

7.5

High

Base vector

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

Name of the Vulnerable Software and Affected Versions Nortel UNIStim IP Softphone 2050

Description The issue is related to a buffer overflow that can be triggered by sending a flood of invalid characters to the RTCP port (5678/udp), potentially causing a denial of service (application abort) and possibly allowing the execution of arbitrary code. This is sometimes referred to as "extraneous messaging."

Recommendations For Nortel UNIStim IP Softphone 2050, as a temporary workaround, consider restricting access to the RTCP port (5678/udp) to minimize the risk of exploitation. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Buffer Overflow

Weakness Enumeration

CWE-119

Related Identifiers

CVE-2007-5636

Affected Products

Nortel Unistim Ip Softphone 2050

References · 11

• 🔥 http://securityfocus.com/bid/26118 · Exploit
• 🔥 http://csnc.ch/static/advisory/csnc/nortel_UNIStim_IP_softphone_buffer-overflow_v1.0.txt · Exploit
• 🔥 https://exploit-db.com/exploits/30678 · Exploit
• http://secunia.com/advisories/27252 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2007-5636 · Security Note
• http://support.nortel.com/go/main.jsp?cscat=BLTNDETAIL&id=655203 · Note
• http://securityreason.com/securityalert/3271 · Note
• http://osvdb.org/38521 · Note
• http://vupen.com/english/advisories/2007/3540 · Note
• https://exchange.xforce.ibmcloud.com/vulnerabilities/37256 · Note
• http://securityfocus.com/archive/1/482476/100/0/threaded · Note