CVE-2011-4597

The SIP over UDP implementation in Asterisk Open Source 1.4.x before 1.4.43, 1.6.x before 1.6.2.21, and 1.8.x before 1.8.7.2 uses different port numbers for responses to invalid requests depending on whether a SIP username exists, which allows remote attackers to enumerate usernames via a series ...

CVE-2011-4597

CVE-2011-4597 affects Asterisk Open Source SIP over UDP implementations in 1.4.x up to 1.4.43, 1.6.x up to 1.6.2.21, and 1.8.x up to 1.8.7.2. The vulnerability arises from using different port numbers for responses to invalid requests based on whether a SIP username exists, enabling remote attack...

CVE-2011-4598

CVE-2011-4598 affects Asterisk Open Source 1.6.2.x (before 1.6.2.21) and 1.8.x (before 1.8.7.2). The handle_request_info function in channels/chan_sip.c can trigger a NULL pointer dereference and daemon crash when automon is enabled, via a crafted sequence of SIP requests, leading to a denial of ...

CVE-2011-4597

The SIP over UDP implementation in Asterisk Open Source 1.4.x before 1.4.43, 1.6.x before 1.6.2.21, and 1.8.x before 1.8.7.2 uses different port numbers for responses to invalid requests depending on whether a SIP username exists, which allows remote attackers to enumerate usernames via a series ...

CVE-2011-4598

The handlerequestinfo function in channels/chansip.c in Asterisk Open Source 1.6.2.x before 1.6.2.21 and 1.8.x before 1.8.7.2, when automon is enabled, allows remote attackers to cause a denial of service NULL pointer dereference and daemon crash via a crafted sequence of SIP requests...

Asterisk Multiple Vulnerabilities (AST-2011-013 / AST-2011-014)

According to the version in its SIP banner, the version of Asterisk running on the remote host is potentially affected by the following vulnerabilities : - An issue in the SIP protocol can lead to the enumeration of endpoints with NAT settings different from the default. Note that this is an issu...

AST-2011-014: Remote crash possibility with SIP and the "automon" feature enabled

Asterisk Project Security Advisory - AST-2011-014 Product Asterisk Summary Remote crash possibility with SIP and the "automon" feature enabled Nature of Advisory Remote crash vulnerability in a feature that is disabled by default Susceptibility Remote unauthenticated sessions Severity Moderate...

AST-2011-013: Possible remote enumeration of SIP endpoints with differing NAT settings

Asterisk Project Security Advisory - AST-2011-013 Product Asterisk Summary Possible remote enumeration of SIP endpoints with differing NAT settings Nature of Advisory Unauthorized data disclosure Susceptibility Remote unauthenticated sessions Severity Minor Exploits Known Yes Reported On 2011-07-...

FreeBSD : asterisk -- Multiple Vulnerabilities (bb389137-21fb-11e1-89b4-001ec9578670)

Asterisk project reports : It is possible to enumerate SIP usernames when the general and user/peer NAT settings differ in whether to respond to the port a request is sent from or the port listed for responses in the Via header. When the 'automon' feature is enabled in features.conf, it is possib...

asterisk -- Multiple Vulnerabilities

Asterisk project reports: It is possible to enumerate SIP usernames when the general and user/peer NAT settings differ in whether to respond to the port a request is sent from or the port listed for responses in the Via header. When the "automon" feature is enabled in features.conf, it is possibl...

SIP Username Enumeration

The SIP server on the remote host appears to respond differently to registration requests for valid and invalid usernames. Using that fact, Nessus was able to enumerate some of the valid usernames. %NASLMINLEVEL 70300 C Tenable Network Security, Inc. include'deprecatednasllevel.inc';...

Asterisk SIP Channel Driver Uninitialized Variable Request Parsing DoS (AST-2011-012)

According to the version in its SIP banner, the version of Asterisk running on the remote host can be crashed remotely by an authenticated user when parsing an invalid SIP URI. %NASLMINLEVEL 70300 C Tenable Network Security, Inc. include'deprecatednasllevel.inc'; include'compat.inc'; if descripti...

Asterisk Invalid INVITE / REGISTER SIP Request Username Enumeration (AST-2011-011)

According to the version in its SIP banner, the version of Asterisk running on the remote host allows a remote attacker to enumerate valid users by sending malformed SIP INVITE and REGISTER requests. %NASLMINLEVEL 70300 C Tenable Network Security, Inc. include'deprecatednasllevel.inc';...

Fedora 15 : asterisk-1.8.7.1-1.fc15 (2011-14538)

The Asterisk Development Team has announced a security release for Asterisk= 1.8. The available security release is released as version 1.8.7.1. This release is available for immediate download at http://downloads.asterisk.org/pub/telephony/asterisk/releases The release of Asterisk 1.8.7.1 resolv...

Cisco IOS Software and Cisco Unified Communications Manager Session Initiation Protocol Packet Processing Memory Leak Vulnerability

Cisco IOS Software and Cisco Unified Communications Manager contain a vulnerability that could allow an unauthenticated, remote attacker to cause a denial of service DoS condition. The vulnerability is due to improper processing of malformed packets by the affected software. An unauthenticated,...

CVE-2011-0941

Memory leak in Cisco Unified Communications Manager CUCM 6.x before 6.15su2, 7.x before 7.15bsu3, 8.x before 8.03asu1, and 8.5 before 8.51, and Cisco IOS 12.4 and 15.1, allows remote attackers to cause a denial of service memory consumption and process failure or device reload via a malformed SIP...

Memory corruption

Memory leak in Cisco Unified Communications Manager CUCM 6.x before 6.15su2, 7.x before 7.15bsu3, 8.x before 8.03asu1, and 8.5 before 8.51, and Cisco IOS 12.4 and 15.1, allows remote attackers to cause a denial of service memory consumption and process failure or device reload via a malformed SIP...

CVE-2011-0941

Memory leak in Cisco Unified Communications Manager CUCM 6.x before 6.15su2, 7.x before 7.15bsu3, 8.x before 8.03asu1, and 8.5 before 8.51, and Cisco IOS 12.4 and 15.1, allows remote attackers to cause a denial of service memory consumption and process failure or device reload via a malformed SIP...

CVE-2011-0941

Cisco CUCM and Cisco IOS are affected by a memory leak vulnerability (CVE-2011-0941) triggered by malformed SIP messages. A remote attacker could cause denial of service through memory consumption, leading to process failure or device reload. Affected: CUCM 6.x before 6.1(5)su2; CUCM 7.x before 7...

AST-2011-012: Remote crash vulnerability in SIP channel driver

Asterisk Project Security Advisory - AST-2011-012 Product Asterisk Summary Remote crash vulnerability in SIP channel driver Nature of Advisory Remote crash Susceptibility Remote authenticated sessions Severity Critical Exploits Known No Reported On October 4, 2011 Reported By Ehsan Foroughi Poste...