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AUSCERT Security Bulletin
ASB-2019.0165
MFSA 2019-17 Security vulnerabilities fixed in Thunderbird 60.7.1
14 June 2019
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AusCERT Security Bulletin Summary
---------------------------------
Product: Mozilla Thunderbird
Operating System: Windows
UNIX variants (UNIX, Linux, OSX)
Impact/Access: Execute Arbitrary Code/Commands -- Remote with User Interaction
Denial of Service -- Remote with User Interaction
Resolution: Patch/Upgrade
CVE Names: CVE-2019-11706 CVE-2019-11705 CVE-2019-11704
CVE-2019-11703
Member content until: Sunday, July 14 2019
OVERVIEW
A vulnerability has been identified in Mozilla Thunderbird
versions prior to 60.7.1. [1]
IMPACT
Mozilla has given the following information regarding these
vulnerabilities:
"Announced
June 13, 2019
Impact
critical
Products
Thunderbird
Fixed in
Thunderbird 60.7.1
# CVE-2019-11703: Heap buffer overflow in icalparser.c
Reporter
Luis Merino of X41 D-Sec
Impact
high
Description
A flaw in Thunderbird's implementation of iCal causes a heap buffer overflow in
parser_get_next_char when processing certain email messages, resulting in a
potentially exploitable crash.
References
o Bug 1553820
# CVE-2019-11704: Heap buffer overflow in icalvalue.c
Reporter
Luis Merino of X41 D-Sec
Impact
high
Description
A flaw in Thunderbird's implementation of iCal causes a heap buffer overflow in
icalmemory_strdup_and_dequote when processing certain email messages, resulting
in a potentially exploitable crash.
References
o Bug 1553814
# CVE-2019-11705: Stack buffer overflow in icalrecur.c
Reporter
Luis Merino of X41 D-Sec
Impact
high
Description
A flaw in Thunderbird's implementation of iCal causes a stack buffer overflow
in icalrecur_add_bydayrules when processing certain email messages, resulting
in a potentially exploitable crash.
References
o Bug 1553808
# CVE-2019-11706: Type confusion in icalproperty.c
Reporter
Luis Merino of X41 D-Sec
Impact
low
Description
A flaw in Thunderbird's implementation of iCal causes a type confusion in
icaltimezone_get_vtimezone_properties when processing certain email messages,
resulting in a crash.
References
o Bug 1555646" [1]
MITIGATION
Mozilla recommends upgrading Thunderbird to the latest version.
REFERENCES
[1] MFSA 2019-17 Security vulnerabilities fixed in Thunderbird 60.7.1
https://www.mozilla.org/en-US/security/advisories/mfsa2019-17/
AusCERT has made every effort to ensure that the information contained
in this document is accurate. However, the decision to use the information
described is the responsibility of each user or organisation. The decision to
follow or act on information or advice contained in this security bulletin is
the responsibility of each user or organisation, and should be considered in
accordance with your organisation's site policies and procedures. AusCERT
takes no responsibility for consequences which may arise from following or
acting on information or advice contained in this security bulletin.
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Australian Computer Emergency Response Team
The University of Queensland
Brisbane
Qld 4072
Internet Email: auscert@auscert.org.au
Facsimile: (07) 3365 7031
Telephone: (07) 3365 4417 (International: +61 7 3365 4417)
AusCERT personnel answer during Queensland business hours
which are GMT+10:00 (AEST).
On call after hours for member emergencies only.
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