In Wireshark 2.6.0 to 2.6.3, the CoAP dissector could crash. This was addressed in epan/dissectors/packet-coap.c by ensuring that the piv length is correctly computed.
Weakness
The product performs a calculation that generates incorrect or unintended results that are later used in security-critical decisions or resource management.
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Wireshark | Wireshark | 2.6.0 (including) | 2.6.3 (including) |
| Wireshark | Ubuntu | bionic | * |
| Wireshark | Ubuntu | esm-apps/bionic | * |
| Wireshark | Ubuntu | esm-apps/xenial | * |
| Wireshark | Ubuntu | esm-infra-legacy/trusty | * |
| Wireshark | Ubuntu | trusty | * |
| Wireshark | Ubuntu | trusty/esm | * |
| Wireshark | Ubuntu | upstream | * |
| Wireshark | Ubuntu | xenial | * |
Potential Mitigations
- Use languages, libraries, or frameworks that make it easier to handle numbers without unexpected consequences.
- Examples include safe integer handling packages such as SafeInt (C++) or IntegerLib (C or C++).
- Use languages, libraries, or frameworks that make it easier to handle numbers without unexpected consequences.
- Examples include safe integer handling packages such as SafeInt (C++) or IntegerLib (C or C++).
Related Attack Patterns
References
- http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00027.html
- http://www.securityfocus.com/bid/105583
- http://www.securitytracker.com/id/1041909
- https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=15172
- https://code.wireshark.org/review/gitweb?p=wireshark.git%3Ba=commit%3Bh=b2bbd9fdf209911d94b23cc33f4daccbceb7fa8a
- https://www.debian.org/security/2018/dsa-4359
- https://www.wireshark.org/security/wnpa-sec-2018-49.html
- http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00027.html
- http://www.securityfocus.com/bid/105583
- http://www.securitytracker.com/id/1041909
- https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=15172
- https://code.wireshark.org/review/gitweb?p=wireshark.git%3Ba=commit%3Bh=b2bbd9fdf209911d94b23cc33f4daccbceb7fa8a
- https://www.debian.org/security/2018/dsa-4359
- https://www.wireshark.org/security/wnpa-sec-2018-49.html