Improper Neutralization of Special Elements in Output Used by a Downstream Component in wireshark (Alpine package)

1) Improper Neutralization of Special Elements in Output Used by a Downstream Component

EUVDB-ID: #VU33535

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-2017-7703

CWE-ID: CWE-74 - Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')

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 IMAP dissector could crash, triggered by packet injection or a malformed capture file. This was addressed in epan/dissectors/packet-imap.c by calculating a line's end correctly.

Mitigation

Install update from vendor's website.

Vulnerable software versions

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

CPE2.3

• cpe:2.3:o:alpine:wireshark_alpine_package:2.0.5-r0:*:*:*:*:alpine_linux:*:
• cpe:2.3:o:alpine:wireshark_alpine_package:2.0.4-r0:*:*:*:*:alpine_linux:*:
• cpe:2.3:o:alpine:wireshark_alpine_package:2.0.6-r0:*:*:*:*:alpine_linux:*:

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.