#VU41295 Buffer overflow in Wireshark - CVE-2014-6424

Vulnerability identifier: #VU41295

Vulnerability risk: Medium

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2014-6424

CWE-ID: CWE-119

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Wireshark
Server applications / IDS/IPS systems, Firewalls and proxy servers

Vendor: Wireshark.org

Description

The vulnerability allows a remote non-authenticated attacker to perform service disruption.

The dissect_v9_v10_pdu_data function in epan/dissectors/packet-netflow.c in the Netflow dissector in Wireshark 1.10.x before 1.10.10 and 1.12.x before 1.12.1 refers to incorrect offset and start variables, which allows remote attackers to cause a denial of service (uninitialized memory read and application crash) via a crafted packet.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Wireshark: 1.10.0 - 1.10.9, 1.12.0

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External links
https://linux.oracle.com/errata/ELSA-2014-1676
https://lists.opensuse.org/opensuse-security-announce/2014-09/msg00033.html
https://lists.opensuse.org/opensuse-updates/2014-09/msg00058.html
https://rhn.redhat.com/errata/RHSA-2014-1676.html
https://secunia.com/advisories/60280
https://secunia.com/advisories/60578
https://secunia.com/advisories/61929
https://www.debian.org/security/2014/dsa-3049
https://www.wireshark.org/security/wnpa-sec-2014-14.html
https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=10370
https://code.wireshark.org/review/gitweb?p=wireshark.git;a=commit;h=44698259b1f5865c60323acaf2a633654a2abe81

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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.