CVE-2019-0053: Junos OS: Insufficient validation of environment variables in telnet client may lead to stack-based buffer overflow
First published: Thu Jul 11 2019(Updated: )
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.
Credit: sirt@juniper.net sirt@juniper.net
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Juniper JUNOS | =12.3 | |
| Juniper JUNOS | =12.3-r1 | |
| Juniper JUNOS | =12.3-r11 | |
| Juniper JUNOS | =12.3-r12 | |
| Juniper JUNOS | =12.3-r13 | |
| Juniper JUNOS | =12.3-r2 | |
| Juniper JUNOS | =12.3-r3 | |
| Juniper JUNOS | =12.3-r4 | |
| Juniper JUNOS | =12.3-r5 | |
| Juniper JUNOS | =12.3-r6 | |
| Juniper JUNOS | =12.3-r7 | |
| Juniper JUNOS | =12.3-r8 | |
| Juniper JUNOS | =12.3-r9 | |
| Juniper JUNOS | =12.3r12 | |
| Juniper JUNOS | =12.3x48-d10 | |
| Juniper JUNOS | =12.3x48-d15 | |
| Juniper JUNOS | =12.3x48-d25 | |
| Juniper JUNOS | =12.3x48-d30 | |
| Juniper JUNOS | =12.3x48-d35 | |
| Juniper JUNOS | =12.3x48-d40 | |
| Juniper JUNOS | =12.3x48-d45 | |
| Juniper JUNOS | =12.3x48-d50 | |
| Juniper JUNOS | =12.3x48-d55 | |
| Juniper JUNOS | =12.3x48-d60 | |
| Juniper JUNOS | =12.3x48-d65 | |
| Juniper JUNOS | =12.3x48-d70 | |
| Juniper JUNOS | =12.3x48-d75 | |
| Juniper JUNOS | =14.1x53 | |
| Juniper JUNOS | =14.1x53-d10 | |
| Juniper JUNOS | =14.1x53-d15 | |
| Juniper JUNOS | =14.1x53-d16 | |
| Juniper JUNOS | =14.1x53-d25 | |
| Juniper JUNOS | =14.1x53-d26 | |
| Juniper JUNOS | =14.1x53-d27 | |
| Juniper JUNOS | =14.1x53-d30 | |
| Juniper JUNOS | =14.1x53-d35 | |
| Juniper JUNOS | =14.1x53-d40 | |
| Juniper JUNOS | =14.1x53-d45 | |
| Juniper JUNOS | =14.1x53-d48 | |
| Juniper JUNOS | =15.1 | |
| Juniper JUNOS | =15.1-a1 | |
| Juniper JUNOS | =15.1-f1 | |
| Juniper JUNOS | =15.1-f2 | |
| Juniper JUNOS | =15.1-f2-s1 | |
| Juniper JUNOS | =15.1-f2-s2 | |
| Juniper JUNOS | =15.1-f2-s3 | |
| Juniper JUNOS | =15.1-f2-s4 | |
| Juniper JUNOS | =15.1-f3 | |
| Juniper JUNOS | =15.1-f4 | |
| Juniper JUNOS | =15.1-f5 | |
| Juniper JUNOS | =15.1-f6 | |
| Juniper JUNOS | =15.1-f6-s3 | |
| Juniper JUNOS | =15.1-r1 | |
| Juniper JUNOS | =15.1-r2 | |
| Juniper JUNOS | =15.1-r3 | |
| Juniper JUNOS | =15.1-r4 | |
| Juniper JUNOS | =15.1-r4-s9 | |
| Juniper JUNOS | =15.1-r5 | |
| Juniper JUNOS | =15.1-r6 | |
| Juniper JUNOS | =15.1-r6-s6 | |
| Juniper JUNOS | =15.1-r7-s1 | |
| Juniper JUNOS | =15.1-r7-s2 | |
| Juniper JUNOS | =15.1-r7-s3 | |
| Juniper JUNOS | =15.1x49 | |
| Juniper JUNOS | =15.1x49-d10 | |
| Juniper JUNOS | =15.1x49-d100 | |
| Juniper JUNOS | =15.1x49-d110 | |
| Juniper JUNOS | =15.1x49-d120 | |
| Juniper JUNOS | =15.1x49-d130 | |
| Juniper JUNOS | =15.1x49-d140 | |
| Juniper JUNOS | =15.1x49-d150 | |
| Juniper JUNOS | =15.1x49-d160 | |
| Juniper JUNOS | =15.1x49-d20 | |
| Juniper JUNOS | =15.1x49-d30 | |
| Juniper JUNOS | =15.1x49-d35 | |
| Juniper JUNOS | =15.1x49-d40 | |
| Juniper JUNOS | =15.1x49-d45 | |
| Juniper JUNOS | =15.1x49-d50 | |
| Juniper JUNOS | =15.1x49-d55 | |
| Juniper JUNOS | =15.1x49-d60 | |
| Juniper JUNOS | =15.1x49-d65 | |
| Juniper JUNOS | =15.1x49-d70 | |
| Juniper JUNOS | =15.1x49-d75 | |
| Juniper JUNOS | =15.1x49-d80 | |
| Juniper JUNOS | =15.1x49-d90 | |
| Juniper JUNOS | =15.1x53 | |
| Juniper JUNOS | =15.1x53-d20 | |
| Juniper JUNOS | =15.1x53-d21 | |
| Juniper JUNOS | =15.1x53-d210 | |
| Juniper JUNOS | =15.1x53-d230 | |
| Juniper JUNOS | =15.1x53-d231 | |
| Juniper JUNOS | =15.1x53-d232 | |
| Juniper JUNOS | =15.1x53-d233 | |
| Juniper JUNOS | =15.1x53-d234 | |
| Juniper JUNOS | =15.1x53-d235 | |
| Juniper JUNOS | =15.1x53-d236 | |
| Juniper JUNOS | =15.1x53-d25 | |
| Juniper JUNOS | =15.1x53-d30 | |
| Juniper JUNOS | =15.1x53-d32 | |
| Juniper JUNOS | =15.1x53-d33 | |
| Juniper JUNOS | =15.1x53-d34 | |
| Juniper JUNOS | =15.1x53-d40 | |
| Juniper JUNOS | =15.1x53-d45 | |
| Juniper JUNOS | =15.1x53-d495 | |
| Juniper JUNOS | =15.1x53-d52 | |
| Juniper JUNOS | =15.1x53-d55 | |
| Juniper JUNOS | =15.1x53-d56 | |
| Juniper JUNOS | =15.1x53-d59 | |
| Juniper JUNOS | =15.1x53-d590 | |
| Juniper JUNOS | =15.1x53-d60 | |
| Juniper JUNOS | =15.1x53-d61 | |
| Juniper JUNOS | =15.1x53-d62 | |
| Juniper JUNOS | =15.1x53-d63 | |
| Juniper JUNOS | =15.1x53-d64 | |
| Juniper JUNOS | =15.1x53-d65 | |
| Juniper JUNOS | =15.1x53-d66 | |
| Juniper JUNOS | =15.1x53-d67 | |
| Juniper JUNOS | =15.1x53-d68 | |
| Juniper JUNOS | =15.1x53-d70 | |
| Juniper JUNOS | =16.1 | |
| Juniper JUNOS | =16.1-r1 | |
| Juniper JUNOS | =16.1-r2 | |
| Juniper JUNOS | =16.1-r3 | |
| Juniper JUNOS | =16.1-r3-s10 | |
| Juniper JUNOS | =16.1-r3-s11 | |
| Juniper JUNOS | =16.1-r4 | |
| Juniper JUNOS | =16.1-r5 | |
| Juniper JUNOS | =16.1-r6 | |
| Juniper JUNOS | =16.1-r7 | |
| Juniper JUNOS | =16.2 | |
| Juniper JUNOS | =16.2-r1 | |
| Juniper JUNOS | =16.2-r2 | |
| Juniper JUNOS | =16.2-r2-s1 | |
| Juniper JUNOS | =16.2-r2-s2 | |
| Juniper JUNOS | =16.2-r2-s5 | |
| Juniper JUNOS | =16.2-r2-s6 | |
| Juniper JUNOS | =16.2-r2-s7 | |
| Juniper JUNOS | =16.2-r2-s8 | |
| Juniper JUNOS | =17.1 | |
| Juniper JUNOS | =17.1-r1 | |
| Juniper JUNOS | =17.1-r2-s1 | |
| Juniper JUNOS | =17.1-r2-s10 | |
| Juniper JUNOS | =17.1-r2-s2 | |
| Juniper JUNOS | =17.1-r2-s3 | |
| Juniper JUNOS | =17.1-r2-s4 | |
| Juniper JUNOS | =17.1-r2-s5 | |
| Juniper JUNOS | =17.1-r2-s6 | |
| Juniper JUNOS | =17.1-r2-s7 | |
| Juniper JUNOS | =17.2 | |
| Juniper JUNOS | =17.2-r1 | |
| Juniper JUNOS | =17.2-r1-s2 | |
| Juniper JUNOS | =17.2-r1-s4 | |
| Juniper JUNOS | =17.2-r1-s7 | |
| Juniper JUNOS | =17.2-r2 | |
| Juniper JUNOS | =17.2-r2-s6 | |
| Juniper JUNOS | =17.3 | |
| Juniper JUNOS | =17.3-r1 | |
| Juniper JUNOS | =17.3-r2 | |
| Juniper JUNOS | =17.3-r2-s1 | |
| Juniper JUNOS | =17.3-r2-s2 | |
| Juniper JUNOS | =17.3-r3-s1 | |
| Juniper JUNOS | =17.3-r3-s2 | |
| Juniper JUNOS | =17.3-r3-s3 | |
| Juniper JUNOS | =17.4 | |
| Juniper JUNOS | =17.4-r1 | |
| Juniper JUNOS | =17.4-r1-s1 | |
| Juniper JUNOS | =17.4-r1-s2 | |
| Juniper JUNOS | =17.4-r1-s4 | |
| Juniper JUNOS | =17.4-r2 | |
| Juniper JUNOS | =17.4-r2-s1 | |
| Juniper JUNOS | =17.4-r2-s2 | |
| Juniper JUNOS | =18.1 | |
| Juniper JUNOS | =18.1-r1 | |
| Juniper JUNOS | =18.1-r2 | |
| Juniper JUNOS | =18.1-r2-s1 | |
| Juniper JUNOS | =18.1-r2-s2 | |
| Juniper JUNOS | =18.1-r3 | |
| Juniper JUNOS | =18.1-r3-s2 | |
| Juniper JUNOS | =18.2 | |
| Juniper JUNOS | =18.2-r1 | |
| Juniper JUNOS | =18.2-r1-s3 | |
| Juniper JUNOS | =18.2-r1-s4 | |
| Juniper JUNOS | =18.2-r2-s1 | |
| Juniper JUNOS | =18.2x75 | |
| Juniper JUNOS | =18.2x75-d20 | |
| Juniper JUNOS | =18.3 | |
| Juniper JUNOS | =18.3-r1 | |
| Juniper JUNOS | =18.3-r1-s1 | |
| Juniper JUNOS | =18.3-r1-s2 | |
| Juniper JUNOS | =18.4 | |
| Juniper JUNOS | =18.4-r1 | |
| Juniper JUNOS | =18.4-r1-s1 | |
| Debian Debian Linux | =10.0 |
Remedy
The following software releases have been updated to resolve this specific issue: 12.3R12-S13, 12.3X48-D80, 12.3X48-D85, 14.1X53-D130, 14.1X53-D49, 15.1F6-S12, 15.1R7-S4, 15.1X49-D170, 15.1X53-D237, 15.1X53-D496, 15.1X53-D591, 15.1X53-D69, 16.1R3-S11, 16.1R7-S4, 16.2R2-S9, 17.1R3, 17.2R1-S8, 17.2R2-S7, 17.2R3-S1, 17.3R3-S4, 17.4R1-S6, 17.4R2-S3, 17.4R3, 18.1R2-S4, 18.1R3-S3, 18.2R1-S5, 18.2R2-S2, 18.2R3, 18.2X75-D40, 18.3R1-S3, 18.3R2, 18.4R1-S2, 18.4R2, 19.1R1, and all subsequent releases.
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Reference Links
- http://packetstormsecurity.com/files/153746/FreeBSD-Security-Advisory-FreeBSD-SA-19-12.telnet.html
- https://kb.juniper.net/JSA10947
- https://lists.debian.org/debian-lts-announce/2022/11/msg00033.html
- https://lists.debian.org/debian-lts-announce/2023/10/msg00013.html
- https://seclists.org/bugtraq/2019/Jul/45
- https://security.FreeBSD.org/advisories/FreeBSD-SA-19:12.telnet.asc
- https://www.exploit-db.com/exploits/45982
- collector/nvd-api
- collector/nvd-index
- agent/title
- agent/weakness
- agent/severity
- agent/references
- agent/author
- agent/event
- agent/type
- agent/description
- agent/remedy
- agent/last-modified-date
- agent/softwarecombine
- agent/first-publish-date
- agent/tags
- collector/mitre-cve
- source/MITRE
- vendor/juniper
- canonical/juniper junos
- version/juniper junos/12.3
- version/juniper junos/12.3-r1
- version/juniper junos/12.3-r11
- version/juniper junos/12.3-r12
- version/juniper junos/12.3-r13
- version/juniper junos/12.3-r2
- version/juniper junos/12.3-r3
- version/juniper junos/12.3-r4
- version/juniper junos/12.3-r5
- version/juniper junos/12.3-r6
- version/juniper junos/12.3-r7
- version/juniper junos/12.3-r8
- version/juniper junos/12.3-r9
- version/juniper junos/12.3r12
- version/juniper junos/12.3x48-d10
- version/juniper junos/12.3x48-d15
- version/juniper junos/12.3x48-d25
- version/juniper junos/12.3x48-d30
- version/juniper junos/12.3x48-d35
- version/juniper junos/12.3x48-d40
- version/juniper junos/12.3x48-d45
- version/juniper junos/12.3x48-d50
- version/juniper junos/12.3x48-d55
- version/juniper junos/12.3x48-d60
- version/juniper junos/12.3x48-d65
- version/juniper junos/12.3x48-d70
- version/juniper junos/12.3x48-d75
- version/juniper junos/14.1x53
- version/juniper junos/14.1x53-d10
- version/juniper junos/14.1x53-d15
- version/juniper junos/14.1x53-d16
- version/juniper junos/14.1x53-d25
- version/juniper junos/14.1x53-d26
- version/juniper junos/14.1x53-d27
- version/juniper junos/14.1x53-d30
- version/juniper junos/14.1x53-d35
- version/juniper junos/14.1x53-d40
- version/juniper junos/14.1x53-d45
- version/juniper junos/14.1x53-d48
- version/juniper junos/15.1
- version/juniper junos/15.1-a1
- version/juniper junos/15.1-f1
- version/juniper junos/15.1-f2
- version/juniper junos/15.1-f2-s1
- version/juniper junos/15.1-f2-s2
- version/juniper junos/15.1-f2-s3
- version/juniper junos/15.1-f2-s4
- version/juniper junos/15.1-f3
- version/juniper junos/15.1-f4
- version/juniper junos/15.1-f5
- version/juniper junos/15.1-f6
- version/juniper junos/15.1-f6-s3
- version/juniper junos/15.1-r1
- version/juniper junos/15.1-r2
- version/juniper junos/15.1-r3
- version/juniper junos/15.1-r4
- version/juniper junos/15.1-r4-s9
- version/juniper junos/15.1-r5
- version/juniper junos/15.1-r6
- version/juniper junos/15.1-r6-s6
- version/juniper junos/15.1-r7-s1
- version/juniper junos/15.1-r7-s2
- version/juniper junos/15.1-r7-s3
- version/juniper junos/15.1x49
- version/juniper junos/15.1x49-d10
- version/juniper junos/15.1x49-d100
- version/juniper junos/15.1x49-d110
- version/juniper junos/15.1x49-d120
- version/juniper junos/15.1x49-d130
- version/juniper junos/15.1x49-d140
- version/juniper junos/15.1x49-d150
- version/juniper junos/15.1x49-d160
- version/juniper junos/15.1x49-d20
- version/juniper junos/15.1x49-d30
- version/juniper junos/15.1x49-d35
- version/juniper junos/15.1x49-d40
- version/juniper junos/15.1x49-d45
- version/juniper junos/15.1x49-d50
- version/juniper junos/15.1x49-d55
- version/juniper junos/15.1x49-d60
- version/juniper junos/15.1x49-d65
- version/juniper junos/15.1x49-d70
- version/juniper junos/15.1x49-d75
- version/juniper junos/15.1x49-d80
- version/juniper junos/15.1x49-d90
- version/juniper junos/15.1x53
- version/juniper junos/15.1x53-d20
- version/juniper junos/15.1x53-d21
- version/juniper junos/15.1x53-d210
- version/juniper junos/15.1x53-d230
- version/juniper junos/15.1x53-d231
- version/juniper junos/15.1x53-d232
- version/juniper junos/15.1x53-d233
- version/juniper junos/15.1x53-d234
- version/juniper junos/15.1x53-d235
- version/juniper junos/15.1x53-d236
- version/juniper junos/15.1x53-d25
- version/juniper junos/15.1x53-d30
- version/juniper junos/15.1x53-d32
- version/juniper junos/15.1x53-d33
- version/juniper junos/15.1x53-d34
- version/juniper junos/15.1x53-d40
- version/juniper junos/15.1x53-d45
- version/juniper junos/15.1x53-d495
- version/juniper junos/15.1x53-d52
- version/juniper junos/15.1x53-d55
- version/juniper junos/15.1x53-d56
- version/juniper junos/15.1x53-d59
- version/juniper junos/15.1x53-d590
- version/juniper junos/15.1x53-d60
- version/juniper junos/15.1x53-d61
- version/juniper junos/15.1x53-d62
- version/juniper junos/15.1x53-d63
- version/juniper junos/15.1x53-d64
- version/juniper junos/15.1x53-d65
- version/juniper junos/15.1x53-d66
- version/juniper junos/15.1x53-d67
- version/juniper junos/15.1x53-d68
- version/juniper junos/15.1x53-d70
- version/juniper junos/16.1
- version/juniper junos/16.1-r1
- version/juniper junos/16.1-r2
- version/juniper junos/16.1-r3
- version/juniper junos/16.1-r3-s10
- version/juniper junos/16.1-r3-s11
- version/juniper junos/16.1-r4
- version/juniper junos/16.1-r5
- version/juniper junos/16.1-r6
- version/juniper junos/16.1-r7
- version/juniper junos/16.2
- version/juniper junos/16.2-r1
- version/juniper junos/16.2-r2
- version/juniper junos/16.2-r2-s1
- version/juniper junos/16.2-r2-s2
- version/juniper junos/16.2-r2-s5
- version/juniper junos/16.2-r2-s6
- version/juniper junos/16.2-r2-s7
- version/juniper junos/16.2-r2-s8
- version/juniper junos/17.1
- version/juniper junos/17.1-r1
- version/juniper junos/17.1-r2-s1
- version/juniper junos/17.1-r2-s10
- version/juniper junos/17.1-r2-s2
- version/juniper junos/17.1-r2-s3
- version/juniper junos/17.1-r2-s4
- version/juniper junos/17.1-r2-s5
- version/juniper junos/17.1-r2-s6
- version/juniper junos/17.1-r2-s7
- version/juniper junos/17.2
- version/juniper junos/17.2-r1
- version/juniper junos/17.2-r1-s2
- version/juniper junos/17.2-r1-s4
- version/juniper junos/17.2-r1-s7
- version/juniper junos/17.2-r2
- version/juniper junos/17.2-r2-s6
- version/juniper junos/17.3
- version/juniper junos/17.3-r1
- version/juniper junos/17.3-r2
- version/juniper junos/17.3-r2-s1
- version/juniper junos/17.3-r2-s2
- version/juniper junos/17.3-r3-s1
- version/juniper junos/17.3-r3-s2
- version/juniper junos/17.3-r3-s3
- version/juniper junos/17.4
- version/juniper junos/17.4-r1
- version/juniper junos/17.4-r1-s1
- version/juniper junos/17.4-r1-s2
- version/juniper junos/17.4-r1-s4
- version/juniper junos/17.4-r2
- version/juniper junos/17.4-r2-s1
- version/juniper junos/17.4-r2-s2
- version/juniper junos/18.1
- version/juniper junos/18.1-r1
- version/juniper junos/18.1-r2
- version/juniper junos/18.1-r2-s1
- version/juniper junos/18.1-r2-s2
- version/juniper junos/18.1-r3
- version/juniper junos/18.1-r3-s2
- version/juniper junos/18.2
- version/juniper junos/18.2-r1
- version/juniper junos/18.2-r1-s3
- version/juniper junos/18.2-r1-s4
- version/juniper junos/18.2-r2-s1
- version/juniper junos/18.2x75
- version/juniper junos/18.2x75-d20
- version/juniper junos/18.3
- version/juniper junos/18.3-r1
- version/juniper junos/18.3-r1-s1
- version/juniper junos/18.3-r1-s2
- version/juniper junos/18.4
- version/juniper junos/18.4-r1
- version/juniper junos/18.4-r1-s1
- vendor/debian
- canonical/debian debian linux
- version/debian debian linux/10.0