Infinite loop in Wireshark - CVE-2017-9345
Published: June 6, 2017
Vulnerability identifier: #VU6907
CSH Severity: Low
CVSS v4: 5.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]
CVE-ID: CVE-2017-9345
CWE-ID: CWE-835
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to cause DoS condition on the target system.
The weakness exists due to infinite loop in the DNS dissector when trying to detect self-referencing pointers. A remote attacker can inject a malformed packet epan/dissectors/packet-dns.c onto the wire or persuade the target user to read a malformed packet trace file and cause the application to crash.
Successful exploitation of the vulnerability results in denial of service.
The weakness exists due to infinite loop in the DNS dissector when trying to detect self-referencing pointers. A remote attacker can inject a malformed packet epan/dissectors/packet-dns.c onto the wire or persuade the target user to read a malformed packet trace file and cause the application to crash.
Successful exploitation of the vulnerability results in denial of service.
Affected software
Wireshark
Arch Linux
Fedora
wireshark (Alpine package)
wireshark
Arch Linux
Fedora
wireshark (Alpine package)
wireshark
How to mitigate CVE-2017-9345
Update to version 2.0.13, 2.2.7 or later.
wireshark (Alpine package) - update to 2.0.13-r0
wireshark - update to 2.2.7-1.fc26
wireshark - update to 2.2.7-1.fc26