PT-2018-2959 · Juniper Networks+3 · Junos+3
Publicado
2018-12-11
·
Atualizado
2025-09-28
·
CVE-2019-0053
CVSS v3.1
7.8
Alta
| Vetor | AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
Name of the Vulnerable Software and Affected Versions
Juniper Networks Junos OS versions prior to 12.3R12-S13
Juniper Networks Junos OS 12.3X48 versions prior to 12.3X48-D80
Juniper Networks Junos OS 14.1X53 versions prior to 14.1X53-D130
Juniper Networks Junos OS 14.1X53 versions prior to 14.1X53-D49
Juniper Networks Junos OS 15.1 versions prior to 15.1F6-S12
Juniper Networks Junos OS 15.1 versions prior to 15.1R7-S4
Juniper Networks Junos OS 15.1X49 versions prior to 15.1X49-D170
Juniper Networks Junos OS 15.1X53 versions prior to 15.1X53-D237
Juniper Networks Junos OS 15.1X53 versions prior to 15.1X53-D496
Juniper Networks Junos OS 15.1X53 versions prior to 15.1X53-D591
Juniper Networks Junos OS 15.1X53 versions prior to 15.1X53-D69
Juniper Networks Junos OS 16.1 versions prior to 16.1R3-S11
Juniper Networks Junos OS 16.1 versions prior to 16.1R7-S4
Juniper Networks Junos OS 16.2 versions prior to 16.2R2-S9
Juniper Networks Junos OS 17.1 versions prior to 17.1R3
Juniper Networks Junos OS 17.2 versions prior to 17.2R1-S8
Juniper Networks Junos OS 17.2 versions prior to 17.2R2-S7
Juniper Networks Junos OS 17.2 versions prior to 17.2R3-S1
Juniper Networks Junos OS 17.3 versions prior to 17.3R3-S4
Juniper Networks Junos OS 17.4 versions prior to 17.4R1-S6
Juniper Networks Junos OS 17.4 versions prior to 17.4R2-S3
Juniper Networks Junos OS 17.4 versions prior to 17.4R3
Juniper Networks Junos OS 18.1 versions prior to 18.1R2-S4
Juniper Networks Junos OS 18.1 versions prior to 18.1R3-S3
Juniper Networks Junos OS 18.2 versions prior to 18.2R1-S5
Juniper Networks Junos OS 18.2 versions prior to 18.2R2-S2
Juniper Networks Junos OS 18.2 versions prior to 18.2R3
Juniper Networks Junos OS 18.2X75 versions prior to 18.2X75-D40
Juniper Networks Junos OS 18.3 versions prior to 18.3R1-S3
Juniper Networks Junos OS 18.3 versions prior to 18.3R2
Juniper Networks Junos OS 18.4 versions prior to 18.4R1-S2
Juniper Networks Junos OS 18.4 versions prior to 18.4R2
Description
Insufficient validation of environment variables in the telnet client supplied in Junos OS can lead to stack-based buffer overflows, which can be exploited to bypass veriexec restrictions on Junos OS. A stack-based overflow is present in the handling of environment variables when connecting via the telnet client to remote telnet servers. This issue only affects the telnet client — accessible from the CLI or shell — in Junos OS. Inbound telnet services are not affected by this issue.
Recommendations
As a temporary workaround, consider disabling the telnet client until a patch is available.
Restrict access to the telnet client to minimize the risk of exploitation.
Update to a version of Juniper Networks Junos OS that is not affected by this issue, such as 12.3R12-S13 or later, 12.3X48-D80 or later, 14.1X53-D130 or later, 15.1F6-S12 or later, 15.1R7-S4 or later, 15.1X49-D170 or later, 15.1X53-D237 or later, 16.1R3-S11 or later, 16.1R7-S4 or later, 16.2R2-S9 or later, 17.1R3 or later, 17.2R1-S8 or later, 17.2R2-S7 or later, 17.2R3-S1 or later, 17.3R3-S4 or later, 17.4R1-S6 or later, 17.4R2-S3 or later, 17.4R3 or later, 18.1R2-S4 or later, 18.1R3-S3 or later, 18.2R1-S5 or later, 18.2R2-S2 or later, 18.2R3 or later, 18.2X75-D40 or later, 18.3R1-S3 or later, 18.3R2 or later, 18.4R1-S2 or later, 18.4R2 or later.
Exploit
Correção
Stack Overflow
Memory Corruption
Buffer Overflow
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Identificadores relacionados
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