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Files from Richard Mudgett

Email addressrmudgett at digium.com
First Active2012-05-29
Last Active2018-09-20
Asterisk Project Security Advisory - AST-2018-009
Posted Sep 20, 2018
Authored by Richard Mudgett | Site asterisk.org

Asterisk Project Security Advisory - There is a stack overflow vulnerability in the res_http_websocket.so module of Asterisk that allows an attacker to crash Asterisk via a specially crafted HTTP request to upgrade the connection to a websocket. The attacker's request causes Asterisk to run out of stack space and crash.

tags | advisory, web, overflow
advisories | CVE-2018-17281
SHA-256 | 999593047c91cf17e94b5126542d0b61c193e900ccb49dfceb842eb260de225f
Asterisk Project Security Advisory - AST-2018-008
Posted Jun 11, 2018
Authored by Richard Mudgett | Site asterisk.org

Asterisk Project Security Advisory - When endpoint specific ACL rules block a SIP request they respond with a 403 forbidden. However, if an endpoint is not identified then a 401 unauthorized response is sent. This vulnerability just discloses which requests hit a defined endpoint. The ACL rules cannot be bypassed to gain access to the disclosed endpoints.

tags | advisory
SHA-256 | 0a8df976f443c76825aaacd37af4fd8f1b496b41d03db87301ebcb184dddb134
Asterisk Project Security Advisory - AST-2017-010
Posted Nov 8, 2017
Authored by Richard Mudgett | Site asterisk.org

Asterisk Project Security Advisory - No size checking is done when setting the user field for Party B on a CDR. Thus, it is possible for someone to use an arbitrarily large string and write past the end of the user field storage buffer.

tags | advisory
SHA-256 | 3693ce1374f889306fb2511c37ffe0483064653da493025b669bee45384de7fc
Asterisk Project Security Advisory - AST-2017-006
Posted Aug 31, 2017
Authored by Richard Mudgett, Corey Farrell | Site asterisk.org

Asterisk Project Security Advisory - The app_minivm module has an externnotify program configuration option that is executed by the MinivmNotify dialplan application. The application uses the caller-id name and number as part of a built string passed to the OS shell for interpretation and execution. Since the caller-id name and number can come from an untrusted source, a crafted caller-id name or number allows an arbitrary shell command injection.

tags | advisory, arbitrary, shell
SHA-256 | f609d7792da894fb6c1fb0ade8daec8f16def1711e4528d9c0115ae784979027
Asterisk Project Security Advisory - AST-2016-003
Posted Feb 6, 2016
Authored by Richard Mudgett, Walter Dokes, Torrey Searle | Site asterisk.org

Asterisk Project Security Advisory - If no UDPTL packets are lost there is no problem. However, a lost packet causes Asterisk to use the available error correcting redundancy packets. If those redundancy packets have zero length then Asterisk uses an uninitialized buffer pointer and length value which can cause invalid memory accesses later when the packet is copied.

tags | advisory
SHA-256 | d61d75b2607cad2c038cf03c5bb97339a5ed2401ece282ee0a7010c19c84efbf
Asterisk Project Security Advisory - AST-2016-002
Posted Feb 6, 2016
Authored by Richard Mudgett, Alexander Traud | Site asterisk.org

Asterisk Project Security Advisory - Setting the sip.conf timert1 value to a value higher than 1245 can cause an integer overflow and result in large retransmit timeout times. These large timeout values hold system file descriptors hostage and can cause the system to run out of file descriptors.

tags | advisory, overflow
SHA-256 | c3a9d55b8722a6698270f1449a33fc8ad65f440df0576b6607a8cd998bdbc47e
Asterisk Project Security Advisory - AST-2014-007
Posted Jun 13, 2014
Authored by Richard Mudgett | Site asterisk.org

Asterisk Project Security Advisory - Establishing a TCP or TLS connection to the configured HTTP or HTTPS port respectively in http.conf and then not sending or completing a HTTP request will tie up a HTTP session. By doing this repeatedly until the maximum number of open HTTP sessions is reached, legitimate requests are blocked.

tags | advisory, web, tcp
advisories | CVE-2014-4047
SHA-256 | e6779aabe2219ce71ab967736150fa4798031e2d5a8f66d132a104297bd2b824
Asterisk Project Security Advisory - AST-2014-001
Posted Mar 11, 2014
Authored by Richard Mudgett, Lucas Molas, Dr. Manuel Sadosky | Site asterisk.org

Asterisk Project Security Advisory - Sending a HTTP request that is handled by Asterisk with a large number of Cookie headers could overflow the stack. You could even exhaust memory if you sent an unlimited number of headers in the request.

tags | advisory, web, overflow
advisories | CVE-2014-2286
SHA-256 | 7930613352d2f6681e74a1dd7d8766aee3838790ca9d640367d15b7cb5e507c4
Asterisk Project Security Advisory - AST-2012-007
Posted May 29, 2012
Authored by Richard Mudgett | Site asterisk.org

Asterisk Project Security Advisory - A remotely exploitable crash vulnerability exists in the IAX2 channel driver if an established call is placed on hold without a suggested music class.

tags | advisory
advisories | CVE-2012-2947
SHA-256 | 58df312830538efb7064340b0ec5a2811f9dbc943e1ac2e4e461efa35a6bc391
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