Bug 1667586 (CVE-2019-5718) - CVE-2019-5718 wireshark: out-of-bounds read in get_t61_string() in epan/charsets.c
Summary: CVE-2019-5718 wireshark: out-of-bounds read in get_t61_string() in epan/chars...
Keywords:
Status: CLOSED WONTFIX
Alias: CVE-2019-5718
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: 1667587 1686915
Blocks: 1667594
TreeView+ depends on / blocked
 
Reported: 2019-01-18 21:48 UTC by Laura Pardo
Modified: 2021-06-29 20:55 UTC (History)
1 user (show)

Fixed In Version: wireshark 2.6.6, wireshark 2.4.12
Clone Of:
Environment:
Last Closed: 2021-06-29 20:55:11 UTC
Embargoed:

Attachments (Terms of Use)

Description Laura Pardo 2019-01-18 21:48:59 UTC 
In Wireshark 2.6.0 to 2.6.5 and 2.4.0 to 2.4.11, the RTSE dissector and other ASN.1 dissectors could crash. This was addressed in epan/charsets.c by adding a get_t61_string length check.


References:
https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=15373
https://www.wireshark.org/security/wnpa-sec-2019-03.html

Upstream Patch:
https://code.wireshark.org/review/gitweb?p=wireshark.git;a=commit;h=cd09cb5cfb673beca3cce20b1d6a9bc67a134ae1
Comment 1 Laura Pardo 2019-01-18 21:49:15 UTC 
Created wireshark tracking bugs for this issue:

Affects: fedora-all [bug 1667587]
Comment 3 Riccardo Schirone 2019-03-08 16:21:56 UTC 
Function get_t61_string() in charsets.c does not correctly validate its input and it reads one byte beyond the input buffer `ptr`, possibly crashing the binary or having other undefined effects.
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