Input validation error in Wireshark and Debian Linux - CVE-2017-7747
Published: April 13, 2017 / Updated: August 8, 2020
Vulnerability identifier: #VU39203
CSH Severity: Medium
CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2017-7747
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote non-authenticated attacker to perform a denial of service (DoS) attack.
In Wireshark 2.2.0 to 2.2.5 and 2.0.0 to 2.0.11, the PacketBB dissector could crash, triggered by packet injection or a malformed capture file. This was addressed in epan/dissectors/packet-packetbb.c by restricting additions to the protocol tree.
Affected software
Wireshark
Debian Linux
Fedora
wireshark
Debian Linux
Fedora
wireshark
How to mitigate CVE-2017-7747
Install update from vendor's website.
wireshark - update to 2.2.6-1.fc25
External References
- http://www.securityfocus.com/bid/97638
- https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=13559
- https://code.wireshark.org/review/gitweb?p=wireshark.git;a=commit;h=5cfd52d6629cf8a7ab67c6bacd3431a964f43584
- https://lists.debian.org/debian-lts-announce/2019/01/msg00010.html
- https://www.wireshark.org/security/wnpa-sec-2017-18.html