Root code execution via unvalidated SSH URL
Published Jul 14, 2022 · Updated Aug 3, 2024
Arbitrary code execution in Verizon 5G Home LVSKIHP IDU 3.4.66.162 allows remote attackers to run a supplied binary as root via a crafted URL. The crtcmode enable_ssh handler in /lib/functions/wnc_jsonsh/crtcmode.sh accepts an unvalidated URL, writes the downloaded contents over /usr/sbin/dropbear, and launches that file. No authentication is required, but the crtcrpc listener must be reachable from the device's local network; exploitation replaces the SSH server executable.
Summary
What happened
Arbitrary code execution in Verizon 5G Home LVSKIHP IDU 3.4.66.162 allows remote attackers to run a supplied binary as root via a crafted URL. The crtcmode enable_ssh handler in /lib/functions/wnc_jsonsh/crtcmode.sh accepts an unvalidated URL, writes the downloaded contents over /usr/sbin/dropbear, and launches that file. No authentication is required, but the crtcrpc listener must be reachable from the device's local network; exploitation replaces the SSH server executable.
The record
- CVE
- CVE-2022-28369
- Published
- Jul 14, 2022
- Updated
- Aug 3, 2024
- Vendor
- Unknown vendor
- Product
- Unknown product
- Classifications
- CWE-434, T1210
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Jul 14, 2022CVE publishedPublication date reported by the CVE source.
- Aug 3, 2024Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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What is affected?
Affected products and versions are unavailable in this record.
Published CVSS scores
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Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
- Verizon LVSKIHP 5G Modem security write-upproof of concept · unverified
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Technologies
Your stack
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Your stack
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