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CVE-2018-14340

Date: July 18, 2018

In Wireshark 2.6.0 to 2.6.1, 2.4.0 to 2.4.7, and 2.2.0 to 2.2.15, dissectors that support zlib decompression could crash. This was addressed in epan/tvbuff_zlib.c by rejecting negative lengths to avoid a buffer over-read.

Language: C

Severity Score

Related Resources (12)

http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00027.html
https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=14675
http://www.securitytracker.com/id/1041608
https://access.redhat.com/security/cve/CVE-2018-14340
https://code.wireshark.org/review/gitweb?p=wireshark.git%3Ba=commit%3Bh=672d882a53f96730e4ef1e5b1639c585823b0df8
https://people.canonical.com/~ubuntu-security/cve/CVE-2018-14340
https://nvd.nist.gov/vuln/detail/CVE-2018-14340
https://www.wireshark.org/security/wnpa-sec-2018-36.html
https://security-tracker.debian.org/tracker/CVE-2018-14340
http://www.securityfocus.com/bid/104847
https://lists.debian.org/debian-lts-announce/2018/07/msg00045.html
https://www.mend.io/vulnerability-database/CVE-2018-14340

Severity Score

Weakness Type (CWE)

Out-of-bounds Read

CWE-125

CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): LOW
Privileges Required (PR): NONE
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): NONE
Integrity (I): NONE
Availability (A): HIGH

CVSS v2

Base Score:
Access Vector (AV): NETWORK
Access Complexity (AC): LOW
Authentication (AU): NONE
Confidentiality (C): NONE
Integrity (I): NONE
Availability (A): PARTIAL
Additional information:

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