Vulnerabilities > CVE-2017-6471 - Improper Input Validation vulnerability in multiple products
Attack vector
NETWORK Attack complexity
LOW Privileges required
NONE Confidentiality impact
NONE Integrity impact
NONE Availability impact
HIGH Summary
In Wireshark 2.2.0 to 2.2.4 and 2.0.0 to 2.0.10, there is a WSP infinite loop, triggered by packet injection or a malformed capture file. This was addressed in epan/dissectors/packet-wsp.c by validating the capability length.
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.
- Server Side Include (SSI) Injection An attacker can use Server Side Include (SSI) Injection to send code to a web application that then gets executed by the web server. Doing so enables the attacker to achieve similar results to Cross Site Scripting, viz., arbitrary code execution and information disclosure, albeit on a more limited scale, since the SSI directives are nowhere near as powerful as a full-fledged scripting language. Nonetheless, the attacker can conveniently gain access to sensitive files, such as password files, and execute shell commands.
- Cross Zone Scripting An attacker is able to cause a victim to load content into their web-browser that bypasses security zone controls and gain access to increased privileges to execute scripting code or other web objects such as unsigned ActiveX controls or applets. This is a privilege elevation attack targeted at zone-based web-browser security. In a zone-based model, pages belong to one of a set of zones corresponding to the level of privilege assigned to that page. Pages in an untrusted zone would have a lesser level of access to the system and/or be restricted in the types of executable content it was allowed to invoke. In a cross-zone scripting attack, a page that should be assigned to a less privileged zone is granted the privileges of a more trusted zone. This can be accomplished by exploiting bugs in the browser, exploiting incorrect configuration in the zone controls, through a cross-site scripting attack that causes the attackers' content to be treated as coming from a more trusted page, or by leveraging some piece of system functionality that is accessible from both the trusted and less trusted zone. This attack differs from "Restful Privilege Escalation" in that the latter correlates to the inadequate securing of RESTful access methods (such as HTTP DELETE) on the server, while cross-zone scripting attacks the concept of security zones as implemented by a browser.
- Cross Site Scripting through Log Files An attacker may leverage a system weakness where logs are susceptible to log injection to insert scripts into the system's logs. If these logs are later viewed by an administrator through a thin administrative interface and the log data is not properly HTML encoded before being written to the page, the attackers' scripts stored in the log will be executed in the administrative interface with potentially serious consequences. This attack pattern is really a combination of two other attack patterns: log injection and stored cross site scripting.
- Command Line Execution through SQL Injection An attacker uses standard SQL injection methods to inject data into the command line for execution. This could be done directly through misuse of directives such as MSSQL_xp_cmdshell or indirectly through injection of data into the database that would be interpreted as shell commands. Sometime later, an unscrupulous backend application (or could be part of the functionality of the same application) fetches the injected data stored in the database and uses this data as command line arguments without performing proper validation. The malicious data escapes that data plane by spawning new commands to be executed on the host.
Nessus
NASL family SuSE Local Security Checks NASL id OPENSUSE-2017-326.NASL description This update for Wireshark fixes minor vulnerabilities that could be used to trigger a dissector crash or infinite loops by sending specially crafted packages over the network or into a capture file : - CVE-2017-6467: NetScaler file parser infinite loop (wnpa-sec-2017-11) - CVE-2017-6468: NetScaler file parser crash (wnpa-sec-2017-08) - CVE-2017-6469: LDSS dissector crash (wnpa-sec-2017-03) - CVE-2017-6470: IAX2 dissector infinite loop (wnpa-sec-2017-10) - CVE-2017-6471: WSP dissector infinite loop (wnpa-sec-2017-05) - CVE-2017-6472: RTMTP dissector infinite loop (wnpa-sec-2017-04) - CVE-2017-6473: K12 file parser crash (wnpa-sec-2017-09) - CVE-2017-6474: NetScaler file parser infinite loop (wnpa-sec-2017-07) - wnpa-sec-2017-06: STANAG 4607 file parser infinite loop last seen 2020-06-05 modified 2017-03-14 plugin id 97709 published 2017-03-14 reporter This script is Copyright (C) 2017-2020 Tenable Network Security, Inc. source https://www.tenable.com/plugins/nessus/97709 title openSUSE Security Update : Wireshark (openSUSE-2017-326) NASL family Debian Local Security Checks NASL id DEBIAN_DLA-858.NASL description It was discovered that Wireshark, a network protocol analyzer, contained several vulnerabilities in the dissectors for ASTERIX, DHCPv6, LDSS, IAX2, WSP and RTMPT and the NetScaler and K12 file parsers, that could lead to various crashes, denial of service, or execution of arbitrary code. For Debian 7 last seen 2020-03-17 modified 2017-03-17 plugin id 97782 published 2017-03-17 reporter This script is Copyright (C) 2017-2020 Tenable Network Security, Inc. source https://www.tenable.com/plugins/nessus/97782 title Debian DLA-858-1 : wireshark security update NASL family Windows NASL id WIRESHARK_2_2_5.NASL description The version of Wireshark installed on the remote Windows host is 2.0.x prior to 2.0.11 or 2.2.x prior to 2.2.5. It is, therefore, affected by multiple denial of service vulnerabilities : - An infinite loop condition exists in the Netscaler file parser in the nstrace_read_v20() and nstrace_read_v30() functions within file wiretap/netscaler.c due to improper validation of certain input. An unauthenticated, remote attacker can exploit this, via a specially crafted capture file, to consume excessive memory resources, resulting in a denial of service condition. (CVE-2017-6467) - An out-of-bounds read error exists within various functions in file wiretap/netscaler.c when handling record lengths. An unauthenticated, remote attacker can exploit this, via a specially crafted capture file, to crash the Netscaler file parser process. (CVE-2017-6468) - A memory allocation issue exists in the dissect_ldss_transfer() function within file epan/dissectors/packet-ldss.c due to improper validation of certain input. An unauthenticated, remote attacker can exploit this, via packet injection or a specially crafted capture file, to crash the LDSS dissector process. (CVE-2017-6469) - An infinite loop condition exists in IAX2 in the iax2_add_ts_fields() function within file epan/dissectors/packet-iax2.c when processing timestamps. An unauthenticated, remote attacker can exploit this, via packet injection or a specially crafted capture file, to consume excessive CPU resources, resulting in a denial of service condition. (CVE-2017-6470) - An infinite loop condition exists in WSP in the dissect_wsp_common() function within file epan/dissectors/packet-wsp.c when handling capability lengths. An unauthenticated, remote attacker can exploit this, via packet injection or a specially crafted capture file, to cause a denial of service condition. (CVE-2017-6471) - An infinite loop condition exists in the RTMPT dissector in the dissect_rtmpt_common() function within file epan/dissectors/packet-rtmpt.c due to improper validation of certain input. An unauthenticated, remote attacker can exploit this, via packet injection or a specially crafted capture file, to consume excessive memory resources, resulting in a denial of service condition. (CVE-2017-6472) - A denial of service vulnerability exists in the process_packet_data() function within file wiretap/k12.c due to improper validation of certain input. An unauthenticated, remote attacker can exploit this, via a specially crafted capture file, to crash the K12 file parser process. (CVE-2017-6473) - An infinite loop condition exists in the NetScaler file parser in the nstrace_read_v10(), nstrace_read_v20(), and nstrace_read_v30() functions within file wiretap/netscaler.c when handling record sizes. An unauthenticated, remote attacker can exploit this, via a specially crafted capture file, to consume excessive memory resources, resulting in a denial of service condition. (CVE-2017-6474) Note that Nessus has not tested for these issues but has instead relied only on the application last seen 2020-06-01 modified 2020-06-02 plugin id 97574 published 2017-03-07 reporter This script is Copyright (C) 2017-2018 Tenable Network Security, Inc. source https://www.tenable.com/plugins/nessus/97574 title Wireshark 2.0.x < 2.0.11 / 2.2.x < 2.2.5 Multiple DoS NASL family MacOS X Local Security Checks NASL id MACOSX_WIRESHARK_2_2_5.NASL description The version of Wireshark installed on the remote macOS or Mac OS X host is 2.0.x prior to 2.0.11 or 2.2.x prior to 2.2.5. It is, therefore, affected by multiple denial of service vulnerabilities : - An infinite loop condition exists in the Netscaler file parser in the nstrace_read_v20() and nstrace_read_v30() functions within file wiretap/netscaler.c due to improper validation of certain input. An unauthenticated, remote attacker can exploit this, via a specially crafted capture file, to consume excessive memory resources, resulting in a denial of service condition. (CVE-2017-6467) - An out-of-bounds read error exists within various functions in file wiretap/netscaler.c when handling record lengths. An unauthenticated, remote attacker can exploit this, via a specially crafted capture file, to crash the Netscaler file parser process. (CVE-2017-6468) - A memory allocation issue exists in the dissect_ldss_transfer() function within file epan/dissectors/packet-ldss.c due to improper validation of certain input. An unauthenticated, remote attacker can exploit this, via packet injection or a specially crafted capture file, to crash the LDSS dissector process. (CVE-2017-6469) - An infinite loop condition exists in IAX2 in the iax2_add_ts_fields() function within file epan/dissectors/packet-iax2.c when processing timestamps. An unauthenticated, remote attacker can exploit this, via packet injection or a specially crafted capture file, to consume excessive CPU resources, resulting in a denial of service condition. (CVE-2017-6470) - An infinite loop condition exists in WSP in the dissect_wsp_common() function within file epan/dissectors/packet-wsp.c when handling capability lengths. An unauthenticated, remote attacker can exploit this, via packet injection or a specially crafted capture file, to cause a denial of service condition. (CVE-2017-6471) - An infinite loop condition exists in the RTMPT dissector in the dissect_rtmpt_common() function within file epan/dissectors/packet-rtmpt.c due to improper validation of certain input. An unauthenticated, remote attacker can exploit this, via packet injection or a specially crafted capture file, to consume excessive memory resources, resulting in a denial of service condition. (CVE-2017-6472) - A denial of service vulnerability exists in the process_packet_data() function within file wiretap/k12.c due to improper validation of certain input. An unauthenticated, remote attacker can exploit this, via a specially crafted capture file, to crash the K12 file parser process. (CVE-2017-6473) - An infinite loop condition exists in the NetScaler file parser in the nstrace_read_v10(), nstrace_read_v20(), and nstrace_read_v30() functions within file wiretap/netscaler.c when handling record sizes. An unauthenticated, remote attacker can exploit this, via a specially crafted capture file, to consume excessive memory resources, resulting in a denial of service condition. (CVE-2017-6474) Note that Nessus has not tested for these issues but has instead relied only on the application last seen 2020-06-01 modified 2020-06-02 plugin id 97573 published 2017-03-07 reporter This script is Copyright (C) 2017-2018 Tenable Network Security, Inc. source https://www.tenable.com/plugins/nessus/97573 title Wireshark 2.0.x < 2.0.11 / 2.2.x < 2.2.5 Multiple DoS (macOS) NASL family Debian Local Security Checks NASL id DEBIAN_DSA-3811.NASL description It was discovered that wireshark, a network protocol analyzer, contained several vulnerabilities in the dissectors for ASTERIX, DHCPv6, NetScaler, LDSS, IAX2, WSP, K12 and STANAG 4607, that could lead to various crashes, denial-of-service or execution of arbitrary code. last seen 2020-06-01 modified 2020-06-02 plugin id 97800 published 2017-03-20 reporter This script is Copyright (C) 2017-2018 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/97800 title Debian DSA-3811-1 : wireshark - security update NASL family Fedora Local Security Checks NASL id FEDORA_2017-6C91C98B33.NASL description Security fix for Note that Tenable Network Security has extracted the preceding description block directly from the Fedora update system website. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues. last seen 2020-06-05 modified 2017-03-13 plugin id 97679 published 2017-03-13 reporter This script is Copyright (C) 2017-2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/97679 title Fedora 25 : wireshark (2017-6c91c98b33)
References
- http://www.debian.org/security/2017/dsa-3811
- http://www.debian.org/security/2017/dsa-3811
- http://www.securityfocus.com/bid/96564
- http://www.securityfocus.com/bid/96564
- https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=13348
- https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=13348
- https://code.wireshark.org/review/gitweb?p=wireshark.git%3Ba=commit%3Bh=62afef41277dfac37f515207ca73d33306e3302b
- https://code.wireshark.org/review/gitweb?p=wireshark.git%3Ba=commit%3Bh=62afef41277dfac37f515207ca73d33306e3302b
- https://www.wireshark.org/security/wnpa-sec-2017-05.html
- https://www.wireshark.org/security/wnpa-sec-2017-05.html