Vulnerabilities > CVE-2013-5641 - Improper Restriction of Operations Within the Bounds of A Memory Buffer vulnerability in Digium Asterisk and Certified Asterisk
Attack vector
NETWORK Attack complexity
LOW Privileges required
NONE Confidentiality impact
NONE Integrity impact
NONE Availability impact
PARTIAL Summary
The SIP channel driver (channels/chan_sip.c) in Asterisk Open Source 1.8.17.x through 1.8.22.x, 1.8.23.x before 1.8.23.1, and 11.x before 11.5.1 and Certified Asterisk 1.8.15 before 1.8.15-cert3 and 11.2 before 11.2-cert2 allows remote attackers to cause a denial of service (NULL pointer dereference, segmentation fault, and daemon crash) via an ACK with SDP to a previously terminated channel. NOTE: some of these details are obtained from third party information.
Vulnerable Configurations
Common Weakness Enumeration (CWE)
Common Attack Pattern Enumeration and Classification (CAPEC)
- Buffer Overflow via Environment Variables This attack pattern involves causing a buffer overflow through manipulation of environment variables. Once the attacker finds that they can modify an environment variable, they may try to overflow associated buffers. This attack leverages implicit trust often placed in environment variables.
- Overflow Buffers Buffer Overflow attacks target improper or missing bounds checking on buffer operations, typically triggered by input injected by an attacker. As a consequence, an attacker is able to write past the boundaries of allocated buffer regions in memory, causing a program crash or potentially redirection of execution as per the attackers' choice.
- Client-side Injection-induced Buffer Overflow This type of attack exploits a buffer overflow vulnerability in targeted client software through injection of malicious content from a custom-built hostile service.
- Filter Failure through Buffer Overflow In this attack, the idea is to cause an active filter to fail by causing an oversized transaction. An attacker may try to feed overly long input strings to the program in an attempt to overwhelm the filter (by causing a buffer overflow) and hoping that the filter does not fail securely (i.e. the user input is let into the system unfiltered).
- MIME Conversion An attacker exploits a weakness in the MIME conversion routine to cause a buffer overflow and gain control over the mail server machine. The MIME system is designed to allow various different information formats to be interpreted and sent via e-mail. Attack points exist when data are converted to MIME compatible format and back.
Nessus
NASL family Fedora Local Security Checks NASL id FEDORA_2013-15567.NASL description - Thu Aug 29 2013 Jeffrey Ollie <jeff at ocjtech.us> - 11.5.1-2 : - Enable hardened build BZ#954338 - Significant clean ups - Thu Aug 29 2013 Jeffrey Ollie <jeff at ocjtech.us> - 11.5.1-1 : - The Asterisk Development Team has announced security releases for Certified - Asterisk 1.8.15, 11.2, and Asterisk 1.8, 10, and 11. The available security releases - are released as versions 1.8.15-cert2, 11.2-cert2, 1.8.23.1, 10.12.3, 10.12.3-digiumphones, - and 11.5.1. Note that Tenable Network Security has extracted the preceding description block directly from the Fedora security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues. last seen 2020-03-17 modified 2013-09-14 plugin id 69887 published 2013-09-14 reporter This script is Copyright (C) 2013-2020 Tenable Network Security, Inc. source https://www.tenable.com/plugins/nessus/69887 title Fedora 18 : asterisk-11.5.1-2.fc18 (2013-15567) NASL family Fedora Local Security Checks NASL id FEDORA_2013-15560.NASL description - Thu Aug 29 2013 Jeffrey Ollie <jeff at ocjtech.us> - 11.5.1-2 : - Enable hardened build BZ#954338 - Significant clean ups - Thu Aug 29 2013 Jeffrey Ollie <jeff at ocjtech.us> - 11.5.1-1 : - The Asterisk Development Team has announced security releases for Certified - Asterisk 1.8.15, 11.2, and Asterisk 1.8, 10, and 11. The available security releases - are released as versions 1.8.15-cert2, 11.2-cert2, 1.8.23.1, 10.12.3, 10.12.3-digiumphones, - and 11.5.1. Note that Tenable Network Security has extracted the preceding description block directly from the Fedora security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues. last seen 2020-03-17 modified 2013-09-14 plugin id 69886 published 2013-09-14 reporter This script is Copyright (C) 2013-2020 Tenable Network Security, Inc. source https://www.tenable.com/plugins/nessus/69886 title Fedora 19 : asterisk-11.5.1-2.fc19 (2013-15560) NASL family Misc. NASL id ASTERISK_AST_2013_004.NASL description According to the version in its SIP banner, the version of Asterisk running on the remote host is potentially affected by a denial of service vulnerability. The application does not properly handle last seen 2020-06-01 modified 2020-06-02 plugin id 69558 published 2013-09-03 reporter This script is Copyright (C) 2013-2018 Tenable Network Security, Inc. source https://www.tenable.com/plugins/nessus/69558 title Asterisk SIP Channel Driver ACK with SDP Denial of Service (AST-2013-004) NASL family FreeBSD Local Security Checks NASL id FREEBSD_PKG_FD2BF3B5100111E3BA940025905A4771.NASL description The Asterisk project reports : Remote Crash From Late Arriving SIP ACK With SDP Remote Crash when Invalid SDP is sent in SIP Request last seen 2020-06-01 modified 2020-06-02 plugin id 69499 published 2013-08-29 reporter This script is Copyright (C) 2013-2018 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/69499 title FreeBSD : asterisk -- multiple vulnerabilities (fd2bf3b5-1001-11e3-ba94-0025905a4771) NASL family Gentoo Local Security Checks NASL id GENTOO_GLSA-201401-15.NASL description The remote host is affected by the vulnerability described in GLSA-201401-15 (Asterisk: Multiple vulnerabilities) Multiple vulnerabilities have been discovered in Asterisk. Please review the CVE identifiers referenced below for details. Impact : A remote attacker could execute arbitrary code with the privileges of the process, cause a Denial of Service condition, or obtain sensitive information. Workaround : There is no known workaround at this time. last seen 2020-06-01 modified 2020-06-02 plugin id 72054 published 2014-01-21 reporter This script is Copyright (C) 2014-2015 Tenable Network Security, Inc. source https://www.tenable.com/plugins/nessus/72054 title GLSA-201401-15 : Asterisk: Multiple vulnerabilities NASL family Debian Local Security Checks NASL id DEBIAN_DSA-2749.NASL description Colin Cuthbertson and Walter Doekes discovered two vulnerabilities in the SIP processing code of Asterisk - an open source PBX and telephony toolkit -, which could result in denial of service. last seen 2020-03-17 modified 2013-09-03 plugin id 69542 published 2013-09-03 reporter This script is Copyright (C) 2013-2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/69542 title Debian DSA-2749-1 : asterisk - several vulnerabilities NASL family Mandriva Local Security Checks NASL id MANDRIVA_MDVSA-2013-223.NASL description Updated asterisk packages fix security vulnerabilities : A remotely exploitable crash vulnerability exists in the SIP channel driver if an ACK with SDP is received after the channel has been terminated. The handling code incorrectly assumes that the channel will always be present (CVE-2013-5641). A remotely exploitable crash vulnerability exists in the SIP channel driver if an invalid SDP is sent in a SIP request that defines media descriptions before connection information. The handling code incorrectly attempts to reference the socket address information even though that information has not yet been set (CVE-2013-5642). last seen 2020-06-01 modified 2020-06-02 plugin id 69540 published 2013-09-02 reporter This script is Copyright (C) 2013-2019 Tenable Network Security, Inc. source https://www.tenable.com/plugins/nessus/69540 title Mandriva Linux Security Advisory : asterisk (MDVSA-2013:223)
References
- http://archives.neohapsis.com/archives/bugtraq/2013-08/0175.html
- http://downloads.asterisk.org/pub/security/AST-2013-004.html
- http://osvdb.org/96691
- http://seclists.org/bugtraq/2013/Aug/185
- http://secunia.com/advisories/54534
- http://secunia.com/advisories/54617
- http://www.debian.org/security/2013/dsa-2749
- http://www.mandriva.com/security/advisories?name=MDVSA-2013:223
- http://www.securityfocus.com/bid/62021
- http://www.securitytracker.com/id/1028956
- https://issues.asterisk.org/jira/browse/ASTERISK-21064