#VU32671 Buffer overflow in Wireshark - CVE-2013-3557

Vulnerability identifier: #VU32671

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-2013-3557

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_ber_choice function in epan/dissectors/packet-ber.c in the ASN.1 BER dissector in Wireshark 1.6.x before 1.6.15 and 1.8.x before 1.8.7 does not properly initialize a certain variable, which allows remote attackers to cause a denial of service (application crash) via a malformed packet.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Wireshark: 1.6.0 - 1.6.14

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External links
https://anonsvn.wireshark.org/viewvc/trunk/epan/dissectors/packet-ber.c?r1=48944&r2=48943&pathrev=48944
https://anonsvn.wireshark.org/viewvc?view=revision&revision=48944
https://lists.opensuse.org/opensuse-updates/2013-06/msg00048.html
https://lists.opensuse.org/opensuse-updates/2013-06/msg00083.html
https://lists.opensuse.org/opensuse-updates/2013-06/msg00194.html
https://lists.opensuse.org/opensuse-updates/2013-06/msg00196.html
https://rhn.redhat.com/errata/RHSA-2014-0341.html
https://secunia.com/advisories/53425
https://secunia.com/advisories/54425
https://www.debian.org/security/2013/dsa-2700
https://www.gentoo.org/security/en/glsa/glsa-201308-05.xml
https://www.mandriva.com/security/advisories?name=MDVSA-2013:172
https://www.wireshark.org/security/wnpa-sec-2013-25.html
https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=8599
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A16521
https://www.wireshark.org/docs/relnotes/wireshark-1.6.15.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.