Cisco IOS XR Software Arbitrary File Read and Write Vulnerability (Cisco Cisco IOS XR Software)
At a glance
- Source
- NVD
- EPSS
- EPSS 1.58 % · percentile 75 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- cisco
- NVD status
- Modified
Description
A vulnerability in the SSH Server process of Cisco IOS XR Software could allow an authenticated, remote attacker to overwrite and read arbitrary files on the local device. This vulnerability is due to insufficient input validation of arguments that are supplied by the user for a specific file transfer method. An attacker with lower-level privileges could exploit this vulnerability by specifying Secure Copy Protocol (SCP) parameters when authenticating to a device. A successful exploit could allow the attacker to elevate their privileges and retrieve and upload files on a device that they should not have access to.
Weaknesses (CWE)
- CWE-88 — Improper Neutralization of Argument Delimiters in a Command
References
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.1 | HIGH 8.1 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N | cisco |
| CVSS 3.1 | HIGH 8.1 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N | NVD · psirt@cisco.com (Secondary) |
| CVSS 3.1 | HIGH 8.1 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N | NVD · nvd@nist.gov (Primary) |
| CVSS 2.0 | HIGH 8.5 | AV:N/AC:L/Au:S/C:C/I:C/A:N | NVD · nvd@nist.gov (Primary) |
European references
- ENISA EUVD · EUVD-2021-21368
- GCVE · GCVE-0-2021-34718
CERT-FR advisories
- CERTFR-2021-AVI-691 — Multiples vulnérabilités dans Cisco IOS XR · cert.ssi.gouv.fr
Affected configurations (NVD CPE)
cpe:2.3:o:cisco:ios_xr:*:*:*:*:*:*:*:*< 7.3.2cpe:2.3:o:cisco:ios_xr:*:*:*:*:*:*:*:*≥ 7.4.0 < 7.4.1cpe:2.3:o:cisco:ios_xr:*:*:*:*:*:*:*:*< 7.3.2cpe:2.3:o:cisco:ios_xr:*:*:*:*:*:*:*:*≥ 7.4.0 < 7.4.1cpe:2.3:o:cisco:ios_xr:*:*:*:*:*:*:*:*< 7.3.2cpe:2.3:o:cisco:ios_xr:*:*:*:*:*:*:*:*≥ 7.4.0 < 7.4.1cpe:2.3:o:cisco:ios_xr:*:*:*:*:*:*:*:*< 7.3.2cpe:2.3:o:cisco:ios_xr:*:*:*:*:*:*:*:*≥ 7.4.0 < 7.4.1cpe:2.3:o:cisco:ios_xr:*:*:*:*:*:*:*:*< 7.3.2cpe:2.3:o:cisco:ios_xr:*:*:*:*:*:*:*:*≥ 7.4.0 < 7.4.1cpe:2.3:o:cisco:ios_xr:*:*:*:*:*:*:*:*< 7.3.2cpe:2.3:o:cisco:ios_xr:*:*:*:*:*:*:*:*≥ 7.4.0 < 7.4.1cpe:2.3:o:cisco:ios_xr:*:*:*:*:*:*:*:*< 7.3.2cpe:2.3:o:cisco:ios_xr:*:*:*:*:*:*:*:*≥ 7.4.0 < 7.4.1cpe:2.3:o:cisco:ios_xr:*:*:*:*:*:*:*:*< 7.3.2cpe:2.3:o:cisco:ios_xr:*:*:*:*:*:*:*:*≥ 7.4.0 < 7.4.1
Affected products
| Product | Versions |
|---|---|
| Cisco · Cisco IOS XR Software | affected n/a |
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 |