Infinite loop in wireshark (Alpine package)



Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2017-7702
CWE-ID CWE-835
Exploitation vector Network
Public exploit N/A
Vulnerable software
 wireshark (Alpine package)
Operating systems & Components / Operating system package or component

Vendor Alpine Linux Development Team

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) Infinite loop

EUVDB-ID: #VU33534

Risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2017-7702

CWE-ID: CWE-835 - Loop with Unreachable Exit Condition ('Infinite Loop')

Exploit availability: No

Description

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 WBXML dissector could go into an infinite loop, triggered by packet injection or a malformed capture file. This was addressed in epan/dissectors/packet-wbxml.c by adding length validation.

Mitigation

Install update from vendor's website.

Vulnerable software versions

wireshark (Alpine package): 2.0.4-r0 - 2.0.11-r0

CPE2.3 External links

http://git.alpinelinux.org/aports/commit/?id=c1e7edb9240a8c3d0893da2c7e6b098117459a5d
http://git.alpinelinux.org/aports/commit/?id=e60cdc58fdbbe1c315e9327497e04e61dd8bd4b4
http://git.alpinelinux.org/aports/commit/?id=7f2025713837d373400e4e9dbca65587de557be6
http://git.alpinelinux.org/aports/commit/?id=0ac366ad2d5b3b89ad6ead39c25460c929cd823c
http://git.alpinelinux.org/aports/commit/?id=a3941a00036014165b8ba5ecdf3b74264d05f3c4


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.



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