Vulnerability identifier: #VU33468

Vulnerability risk: Medium

CVSSv3.1: 6.9 [AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:U/RC:C]

CVE-ID: CVE-2019-9208

CWE-ID: CWE-476

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Debian Linux
Operating systems & Components / Operating system

Vendor: Debian

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a NULL pointer dereference error in Wireshark 2.4.0 to 2.4.12 and 2.6.0 to 2.6.6, the TCAP dissector could crash. This was addressed in epan/dissectors/asn1/tcap/tcap.cnf by avoiding NULL pointer dereferences. A remote attacker can perform a denial of service (DoS) attack.

Mitigation
Cybersecurity Help is currently unaware of any official solution to address this vulnerability.

Vulnerable software versions

Debian Linux: 9.0

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External links
http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00007.html
http://lists.opensuse.org/opensuse-security-announce/2019-05/msg00027.html
http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00027.html
http://www.securityfocus.com/bid/107203
http://bugs.wireshark.org/bugzilla/show_bug.cgi?id=15464
http://code.wireshark.org/review/gitweb?p=wireshark.git;a=commit;h=3d1b8004ed3a07422ca5d4e4ee8097150b934fd2
http://seclists.org/bugtraq/2019/Mar/35
http://usn.ubuntu.com/3986-1/
http://www.debian.org/security/2019/dsa-4416
http://www.oracle.com/security-alerts/cpujan2020.html
http://www.wireshark.org/security/wnpa-sec-2019-07.html

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.