Bug 1760506 (CVE-2018-14461) - CVE-2018-14461 tcpdump: Buffer over-read in ldp_tlv_print() function in print-ldp.c
Summary: CVE-2018-14461 tcpdump: Buffer over-read in ldp_tlv_print() function in print...
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2018-14461
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: 1760626 1791720 1791721
Blocks: 1760628
TreeView+ depends on / blocked
 
Reported: 2019-10-10 17:16 UTC by Pedro Sampaio
Modified: 2020-11-04 03:41 UTC (History)
6 users (show)

Fixed In Version: tcpdump 4.9.3
Doc Type: If docs needed, set a value
Doc Text:
An out-of-bounds read vulnerability was discovered in tcpdump while printing LDP packets captured in a pcap file or coming from the network. A remote attacker may abuse this flaw by sending specially crafted packets that, when printed, would trigger the flaw and crash the application.
Clone Of:
Environment:
Last Closed: 2020-11-04 02:22:18 UTC
Embargoed:

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System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2020:4760 0 None None None 2020-11-04 03:41:07 UTC

Description Pedro Sampaio 2019-10-10 17:16:39 UTC 
The LDP parser in tcpdump before 4.9.3 has a buffer over-read in print-ldp.c:ldp_tlv_print().

Upstream patch:

https://github.com/the-tcpdump-group/tcpdump/commit/aa5c6b710dfd8020d2c908d6b3bd41f1da719b3b

References:

https://github.com/the-tcpdump-group/tcpdump/blob/tcpdump-4.9/CHANGES
Comment 1 Pedro Sampaio 2019-10-11 00:03:48 UTC 
Created tcpdump tracking bugs for this issue:

Affects: fedora-all [bug 1760626]
Comment 4 Product Security DevOps Team 2020-11-04 02:22:18 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-2018-14461
Comment 5 errata-xmlrpc 2020-11-04 03:41:06 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2020:4760 https://access.redhat.com/errata/RHSA-2020:4760
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