CVE-2018-7419

In Wireshark 2.2.0 to 2.2.12 and 2.4.0 to 2.4.4, the NBAP dissector could crash. This was addressed in epan/dissectors/asn1/nbap/nbap.cnf by ensuring DCH ID initialization.

Weakness

The product does not initialize or incorrectly initializes a resource, which might leave the resource in an unexpected state when it is accessed or used.

Affected Software

Potential Mitigations

• Use a language that does not allow this weakness to occur or provides constructs that make this weakness easier to avoid.
• For example, in Java, if the programmer does not explicitly initialize a variable, then the code could produce a compile-time error (if the variable is local) or automatically initialize the variable to the default value for the variable’s type. In Perl, if explicit initialization is not performed, then a default value of undef is assigned, which is interpreted as 0, false, or an equivalent value depending on the context in which the variable is accessed.

Related Attack Patterns

• https://cwe.mitre.org/data/definitions/26.html
• https://cwe.mitre.org/data/definitions/29.html

References

• http://www.securityfocus.com/bid/103159
• https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=14443
• https://code.wireshark.org/review/gitweb?p=wireshark.git%3Ba=commit%3Bh=bebd3a1f50b0a27738d8d3da5b33c1b392eb7273
• https://lists.debian.org/debian-lts-announce/2018/04/msg00018.html
• https://www.debian.org/security/2018/dsa-4217
• https://www.wireshark.org/security/wnpa-sec-2018-14.html
• http://www.securityfocus.com/bid/103159
• https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=14443
• https://code.wireshark.org/review/gitweb?p=wireshark.git%3Ba=commit%3Bh=bebd3a1f50b0a27738d8d3da5b33c1b392eb7273
• https://lists.debian.org/debian-lts-announce/2018/04/msg00018.html
• https://www.debian.org/security/2018/dsa-4217
• https://www.wireshark.org/security/wnpa-sec-2018-14.html