Bug 1895080 (CVE-2020-8037) - CVE-2020-8037 tcpdump: ppp decapsulator can be convinced to allocate a large amount of memory
Summary: CVE-2020-8037 tcpdump: ppp decapsulator can be convinced to allocate a large ...
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2020-8037
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:
Depends On: 1895082 1901635
Blocks: 1895083
TreeView+ depends on / blocked
 
Reported: 2020-11-05 17:10 UTC by Guilherme de Almeida Suckevicz
Modified: 2021-11-10 01:54 UTC (History)
5 users (show)

Fixed In Version: tcpdump 4.10.0rc1
Doc Type: If docs needed, set a value
Doc Text:
A flaw was found in tcpdump while printing PPP packets captured in a pcap file or coming from the network. This flaw allows a remote attacker to send specially crafted packets that, when printed, can lead the application to allocate a large amount of memory, resulting in a denial of service. The highest threat from this vulnerability is to system availability.
Clone Of:
Environment:
Last Closed: 2021-11-10 01:54:35 UTC
Embargoed:

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Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2021:4236 0 None None None 2021-11-09 17:52:53 UTC

Description Guilherme de Almeida Suckevicz 2020-11-05 17:10:27 UTC 
The ppp decapsulator in tcpdump 4.9.3 can be convinced to allocate a large amount of memory.

Reference and upstream patch:
https://github.com/the-tcpdump-group/tcpdump/commit/32027e199368dad9508965aae8cd8de5b6ab5231
Comment 1 Guilherme de Almeida Suckevicz 2020-11-05 17:13:28 UTC 
Created tcpdump tracking bugs for this issue:

Affects: fedora-all [bug 1895082]
Comment 3 errata-xmlrpc 2021-11-09 17:52:52 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2021:4236 https://access.redhat.com/errata/RHSA-2021:4236
Comment 4 Product Security DevOps Team 2021-11-10 01:54:34 UTC 
This bug is now closed. Further updates for individual products will be reflected on the CVE page(s):

https://access.redhat.com/security/cve/cve-2020-8037
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