Bug 1760449 (CVE-2018-14465) - CVE-2018-14465 tcpdump: Buffer over-read in rsvp_obj_print() function in print-rsvp.c
Summary: CVE-2018-14465 tcpdump: Buffer over-read in rsvp_obj_print() function in prin...
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2018-14465
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 1791703 1791704
Blocks: 1760628
TreeView+ depends on / blocked
 
Reported: 2019-10-10 14:57 UTC by Pedro Sampaio
Modified: 2020-11-04 03:40 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 RSVP 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 02:21:53 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 03:40:32 UTC

Description Pedro Sampaio 2019-10-10 14:57:01 UTC 
The RSVP parser in tcpdump before 4.9.3 has a buffer over-read in print-rsvp.c:rsvp_obj_print().

Upstream patch:

https://github.com/the-tcpdump-group/tcpdump/commit/bea2686c296b79609060a104cc139810785b0739

References:

https://github.com/the-tcpdump-group/tcpdump/blob/tcpdump-4.9/CHANGES
Comment 1 Pedro Sampaio 2019-10-11 00:01:39 UTC 
Created tcpdump tracking bugs for this issue:

Affects: fedora-all [bug 1760626]
Comment 2 Riccardo Schirone 2020-01-15 14:36:17 UTC 
While printing a RSVP packet, function rsvp_obj_print() in print-rsvp.c can read beyond the limits of the captured buffer, if there are not enough bytes in the buffer to read 32bits. This may print memory data on the victim's screen or crash the tcpdump application if non mapped memory is accessed.
Comment 5 Product Security DevOps Team 2020-11-04 02:21:53 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-2018-14465
Comment 6 errata-xmlrpc 2020-11-04 03:40:31 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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