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ubuntucveUbuntu.comUB:CVE-2018-12379
HistoryOct 18, 2018 - 12:00 a.m.

CVE-2018-12379

2018-10-1800:00:00
ubuntu.com
ubuntu.com
7

7.8 High

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

4.6 Medium

CVSS2

Access Vector

LOCAL

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

AV:L/AC:L/Au:N/C:P/I:P/A:P

0.001 Low

EPSS

Percentile

27.0%

When the Mozilla Updater opens a MAR format file which contains a very long
item filename, an out-of-bounds write can be triggered, leading to a
potentially exploitable crash. This requires running the Mozilla Updater
manually on the local system with the malicious MAR file in order to occur.
This vulnerability affects Firefox < 62, Firefox ESR < 60.2, and
Thunderbird < 60.2.1.

Notes

Author Note
chrisccoulson Affects the upstream updater

7.8 High

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

4.6 Medium

CVSS2

Access Vector

LOCAL

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

AV:L/AC:L/Au:N/C:P/I:P/A:P

0.001 Low

EPSS

Percentile

27.0%