CVE-2022-4980
General Bytes Crypto Application Server (CAS) Unauthenticated Creation of Admin Account via Default-installation/First-admin Page
- Published
- Updated
- Reserved
- Assigned by
- VulnCheck
Description
General Bytes Crypto Application Server (CAS) beginning with version 20201208 prior to 20220531.38 (backport) and 20220725.22 (mainline) contains an authentication bypass in the admin web interface. An unauthenticated attacker could invoke the same URL used by the product's default-installation / first-admin creation page and create a new administrative account remotely. By gaining admin privileges, the attacker can change the ATM configuration resulting in redirected funds. Public vendor advisories and multiple independent writeups describe the vulnerability as a call to the page used for initial/default installation / first administration user creation; General Bytes has not publicly published the exact endpoint/parameter name. The issue was actively exploited in the wild against cloud-hosted and standalone CAS deployments (scanning exposed CAS instances on ports 7777/443), and publicly acknowledged by the General Bytes in September 2022.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| VulnCheckCNA (assigner) | 4.0 | Critical9.3 | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N |
| NVDNVD · Deferred | 4.0 | Critical9.3 | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X |
- EPSS (exploitation in 30 days)
- 0.66% · top 48% of all CVEs (6 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: Critical 9.3.
Weakness
Affected products
General Bytes · Crypto Application Server (CAS)
- affected 20201208 – < 20220725.22
- affected 20201208 – < 20220531.38
References (6)
- https://generalbytes.atlassian.net/wiki/spaces/ESD/pages/2785509377/Security%2BIncident%2B (opens in a new tab)vendor-advisorypatch
- https://www.halborn.com/blog/post/explained-the-general-bytes-bitcoin-atm-hack-august-2022 (opens in a new tab)third-party-advisory
- https://news.sophos.com/en-us/2022/08/23/bitcoin-atms-leeched-by-attackers-who-created-fake-admin-accounts/ (opens in a new tab)third-party-advisory
- https://www.incibe.es/en/incibe-cert/publications/cybersecurity-highlights/0day-vulnerability-exploited-general-bytes (opens in a new tab)third-party-advisory
- https://thehackernews.com/2022/08/hackers-stole-crypto-from-bitcoin-atms.html (opens in a new tab)media-coverage
- https://www.vulncheck.com/advisories/general-bytes-cas-unauth-creation-of-admin-account-via-default-installation-first-admin-page (opens in a new tab)third-party-advisory
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2022-4980)Record last updated .