Junos OS: Insufficient validation of environment variables in telnet client may lead to stack-based buffer overflow (Juniper Networks Junos OS)
At a glance
- Source
- NVD
- EPSS
- EPSS 0.59 % · percentile 48 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- juniper
- NVD status
- Modified
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. 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.
Weaknesses (CWE)
References
- https://kb.juniper.net/JSA10947
- https://www.exploit-db.com/exploits/45982
- https://security.FreeBSD.org/advisories/FreeBSD-SA-19:12.telnet.asc
- https://seclists.org/bugtraq/2019/Jul/45
- http://packetstormsecurity.com/files/153746/FreeBSD-Security-Advisory-FreeBSD-SA-19-12.telnet.html
- https://lists.debian.org/debian-lts-announce/2022/11/msg00033.html
- https://lists.debian.org/debian-lts-announce/2023/10/msg00013.html
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.0 | HIGH 7.8 | CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H | juniper |
| CVSS 3.1 | HIGH 7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H | NVD · nvd@nist.gov (Primary) |
| CVSS 3.0 | HIGH 7.8 | CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H | NVD · sirt@juniper.net (Secondary) |
| CVSS 2.0 | MEDIUM 4.6 | AV:L/AC:L/Au:N/C:P/I:P/A:P | NVD · nvd@nist.gov (Primary) |
European references
- ENISA EUVD · EUVD-2019-0860
- GCVE · GCVE-0-2019-0053
CERT-FR advisories
- CERTFR-2019-AVI-325 — Multiples vulnérabilités dans les produits Juniper · cert.ssi.gouv.fr
Affected configurations (NVD CPE)
cpe:2.3:o:juniper:junos:12.3:-:*:*:*:*:*:*cpe:2.3:o:juniper:junos:12.3:r1:*:*:*:*:*:*cpe:2.3:o:juniper:junos:12.3:r11:*:*:*:*:*:*cpe:2.3:o:juniper:junos:12.3:r12:*:*:*:*:*:*cpe:2.3:o:juniper:junos:12.3:r13:*:*:*:*:*:*cpe:2.3:o:juniper:junos:12.3:r2:*:*:*:*:*:*cpe:2.3:o:juniper:junos:12.3:r3:*:*:*:*:*:*cpe:2.3:o:juniper:junos:12.3:r4:*:*:*:*:*:*cpe:2.3:o:juniper:junos:12.3:r5:*:*:*:*:*:*cpe:2.3:o:juniper:junos:12.3:r6:*:*:*:*:*:*cpe:2.3:o:juniper:junos:12.3:r7:*:*:*:*:*:*cpe:2.3:o:juniper:junos:12.3:r8:*:*:*:*:*:*cpe:2.3:o:juniper:junos:12.3:r9:*:*:*:*:*:*cpe:2.3:o:juniper:junos:12.3r12:*:*:*:*:*:*:*cpe:2.3:o:juniper:junos:12.3x48:d10:*:*:*:*:*:*cpe:2.3:o:juniper:junos:12.3x48:d15:*:*:*:*:*:*cpe:2.3:o:juniper:junos:12.3x48:d25:*:*:*:*:*:*cpe:2.3:o:juniper:junos:12.3x48:d30:*:*:*:*:*:*cpe:2.3:o:juniper:junos:12.3x48:d35:*:*:*:*:*:*cpe:2.3:o:juniper:junos:12.3x48:d40:*:*:*:*:*:*cpe:2.3:o:juniper:junos:12.3x48:d45:*:*:*:*:*:*cpe:2.3:o:juniper:junos:12.3x48:d50:*:*:*:*:*:*cpe:2.3:o:juniper:junos:12.3x48:d55:*:*:*:*:*:*cpe:2.3:o:juniper:junos:12.3x48:d60:*:*:*:*:*:*cpe:2.3:o:juniper:junos:12.3x48:d65:*:*:*:*:*:*cpe:2.3:o:juniper:junos:12.3x48:d70:*:*:*:*:*:*cpe:2.3:o:juniper:junos:12.3x48:d75:*:*:*:*:*:*cpe:2.3:o:juniper:junos:14.1x53:-:*:*:*:*:*:*cpe:2.3:o:juniper:junos:14.1x53:d10:*:*:*:*:*:*cpe:2.3:o:juniper:junos:14.1x53:d15:*:*:*:*:*:*cpe:2.3:o:juniper:junos:14.1x53:d16:*:*:*:*:*:*cpe:2.3:o:juniper:junos:14.1x53:d25:*:*:*:*:*:*cpe:2.3:o:juniper:junos:14.1x53:d26:*:*:*:*:*:*cpe:2.3:o:juniper:junos:14.1x53:d27:*:*:*:*:*:*cpe:2.3:o:juniper:junos:14.1x53:d30:*:*:*:*:*:*cpe:2.3:o:juniper:junos:14.1x53:d35:*:*:*:*:*:*cpe:2.3:o:juniper:junos:14.1x53:d40:*:*:*:*:*:*cpe:2.3:o:juniper:junos:14.1x53:d45:*:*:*:*:*:*cpe:2.3:o:juniper:junos:14.1x53:d48:*:*:*:*:*:*cpe:2.3:o:juniper:junos:15.1:-:*:*:*:*:*:*- +153 more
Affected products
| Product | Versions |
|---|---|
| Juniper Networks · Junos OS | affected 12.3 versions prior to 12.3R12-S13 ; affected 12.3X48 versions prior to 12.3X48-D80 ; affected 14.1X53 versions prior to 14.1X53-D130 and 14.1X53-D49 ; affected 15.1 versions prior to 15.1F6-S12 and15.1R7-S4 ; affected 15.1X49 versions prior to 15.1X49-D170 ; affected 15.1X53 versions prior to 15.1X53-D237 and 15.1X53-D496 and 15.1X53-D591 and 15.1X53-D69 |
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| CERT-FR (ANSSI) | Licence Ouverte / Etalab 2.0 |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |