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CVE-2019-0053

CVE.org · Published

Historical CVEsJSONAI instructions

Record status
Published
Identifier year (not publication year)
2019
Source publication
Source updated
Imported by cveboard
Source snapshot
cve_2026-10-24_midnight_baseline ·

Plain text

CNA source text (English)

Junos OS: Insufficient validation of environment variables in telnet client may lead to stack-based buffer overflow

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. This issue affects: Juniper Networks Junos OS: 12.3 versions prior to 12.3R12-S13; 12.3X48 versions prior to 12.3X48-D80; 14.1X53 versions prior to 14.1X53-D130, 14.1X53-D49; 15.1 versions prior to 15.1F6-S12, 15.1R7-S4; 15.1X49 versions prior to 15.1X49-D170; 15.1X53 versions prior to 15.1X53-D237, 15.1X53-D496, 15.1X53-D591, 15.1X53-D69; 16.1 versions prior to 16.1R3-S11, 16.1R7-S4; 16.2 versions prior to 16.2R2-S9; 17.1 versions prior to 17.1R3; 17.2 versions prior to 17.2R1-S8, 17.2R2-S7, 17.2R3-S1; 17.3 versions prior to 17.3R3-S4; 17.4 versions prior to 17.4R1-S6, 17.4R2-S3, 17.4R3; 18.1 versions prior to 18.1R2-S4, 18.1R3-S3; 18.2 versions prior to 18.2R1-S5, 18.2R2-S2, 18.2R3; 18.2X75 versions prior to 18.2X75-D40; 18.3 versions prior to 18.3R1-S3, 18.3R2; 18.4 versions prior to 18.4R1-S2, 18.4R2.

Scoped product and version facts

Fix information unknown; no fixed version is derived here. Missing information does not prove that no fix exists.

Exploitation unknown; this catalogue does not assess exploitation.

Junos OS

Vendor
Juniper Networks
Product
Junos OS
Platforms
Unknown
Default status
Unknown
Junos OS · Scoped product and version facts
Version (version)Status (status)Version scheme (versionType)Exclusive end (lessThan)Inclusive end (lessThanOrEqual)Status changes (at → status)
12.3 versions prior to 12.3R12-S13affectedUnavailableUnavailableUnavailableNone listed
12.3X48 versions prior to 12.3X48-D80affectedUnavailableUnavailableUnavailableNone listed
14.1X53 versions prior to 14.1X53-D130 and 14.1X53-D49affectedUnavailableUnavailableUnavailableNone listed
15.1 versions prior to 15.1F6-S12 and15.1R7-S4affectedUnavailableUnavailableUnavailableNone listed
15.1X49 versions prior to 15.1X49-D170affectedUnavailableUnavailableUnavailableNone listed
15.1X53 versions prior to 15.1X53-D237 and 15.1X53-D496 and 15.1X53-D591 and 15.1X53-D69affectedUnavailableUnavailableUnavailableNone listed
16.1 versions prior to 16.1R3-S11 and 16.1R7-S4affectedUnavailableUnavailableUnavailableNone listed
16.2 versions prior to 16.2R2-S9affectedUnavailableUnavailableUnavailableNone listed
17.1 versions prior to 17.1R3affectedUnavailableUnavailableUnavailableNone listed
17.2 versions prior to 17.2R1-S8 and 17.2R2-S7 and 17.2R3-S1affectedUnavailableUnavailableUnavailableNone listed
17.3 versions prior to 17.3R3-S4affectedUnavailableUnavailableUnavailableNone listed
17.4 versions prior to 17.4R1-S6 and 17.4R2-S3 and 17.4R3affectedUnavailableUnavailableUnavailableNone listed
18.1 versions prior to 18.1R2-S4 and 18.1R3-S3affectedUnavailableUnavailableUnavailableNone listed
18.2 versions prior to 18.2R1-S5 and 18.2R2-S2 and 18.2R3affectedUnavailableUnavailableUnavailableNone listed
18.2X75 versions prior to 18.2X75-D40affectedUnavailableUnavailableUnavailableNone listed
18.3 versions prior to 18.3R1-S3 and 18.3R2affectedUnavailableUnavailableUnavailableNone listed
18.4 versions prior to 18.4R1-S2 and 18.4R2affectedUnavailableUnavailableUnavailableNone listed