Bug 1655935 (CVE-2018-19625) - CVE-2018-19625 wireshark: Heap-based buffer over-read in the dissection engine
Summary: CVE-2018-19625 wireshark: Heap-based buffer over-read in the dissection engine
Status: NEW
Alias: CVE-2018-19625
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
low
low
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard: impact=low,public=20181127,reported=2...
Keywords: Security
Depends On: 1660435 1655944 1657634
Blocks: 1655949
TreeView+ depends on / blocked
 
Reported: 2018-12-04 09:51 UTC by Andrej Nemec
Modified: 2019-06-14 09:13 UTC (History)
7 users (show)

(edit)
An out of bounds heap read vulnerability in the dissection engine could allow Wireshark to crash when parsing a specially crafted pcap file. A remote attacker could cause a denial of service to Wireshark by injecting malicious packets into the network that are automatically processed.
Clone Of:
(edit)
Last Closed:


Attachments (Terms of Use)

Description Andrej Nemec 2018-12-04 09:51:02 UTC
In Wireshark 2.6.0 to 2.6.4 and 2.4.0 to 2.4.10, the dissection engine could crash. This was addressed in epan/tvbuff_composite.c by preventing a heap-based buffer over-read.

Upstream issue:

https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=14466

Upstream patch:

https://code.wireshark.org/review/gitweb?p=wireshark.git;a=commit;h=dc4d209f39132a4ae05675a11609176ae9705cfc

External References:

https://www.wireshark.org/security/wnpa-sec-2018-51.html

Comment 1 Andrej Nemec 2018-12-04 10:01:23 UTC
Created wireshark tracking bugs for this issue:

Affects: fedora-all [bug 1655944]

Comment 4 Adam Mariš 2018-12-18 10:26:01 UTC
Statement:

This issue affects the versions of wireshark as shipped with Red Hat Enterprise Linux 5, 6, and 7.

Red Hat Enterprise Linux 5 is now in Extended Life Phase of the support and maintenance life cycle. This issue is not currently planned to be addressed in future updates. For additional information, refer to the Red Hat Enterprise Linux Life Cycle: https://access.redhat.com/support/policy/updates/errata/.

Red Hat Enterprise Linux 6 is now in Maintenance Support 2 Phase of the support and maintenance life cycle. This has been rated as having a security impact of Low, and is not currently planned to be addressed in future updates. For additional information, refer to the Red Hat Enterprise Linux Life Cycle: https://access.redhat.com/support/policy/updates/errata/.


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