CVE-2020-24034
CVSS v3
8.8
HIGH
EPSS Score
1.6 %
exploit probability
CISA KEV
No
known exploited
Exploitation
—
SSVC status
Description
Sagemcom F@ST 5280 routers using firmware version 1.150.61 have insecure deserialization that allows any authenticated user to perform a privilege escalation to any other user. By making a request with valid sess_id, nonce, and ha1 values inside of the serialized session cookie, an attacker may alter the user value inside of this cookie, and assume the role and permissions of the user specified. By assuming the role of the user internal, which is inaccessible to end users by default, the attacker gains the permissions of the internal account, which includes the ability to flash custom firmware to the router, allowing the attacker to achieve a complete compromise.
Technical details
- Published
- 2020-09-01
Frequently asked questions
What is CVE-2020-24034?
Sagemcom F@ST 5280 routers using firmware version 1.150.61 have insecure deserialization that allows any authenticated user to perform a privilege escalation to any other user. By making a request with valid sess_id, nonce, and ha1 values inside of the serialized session cookie, an attacker may alter the user value inside of this cookie, and assume the role and permissions of the user specified. By assuming the role of the user internal, which is inaccessible to end users by default, the attacker gains the permissions of the internal account, which includes the ability to flash custom firmware to the router, allowing the attacker to achieve a complete compromise.
Is CVE-2020-24034 actively exploited?
Active exploitation of CVE-2020-24034 has not been confirmed. The EPSS score is 1.6%, indicating the estimated probability of exploitation in the next 30 days.
What is the CVSS score for CVE-2020-24034?
CVE-2020-24034 has a CVSS v3 base score of 8.8 (HIGH severity).
Is CVE-2020-24034 affecting your environment?
Use isMalicious to check if any of your IPs or domains are associated with this vulnerability's IOCs.
No credit card required · 500 free checks/month · Free API key
Other 2020 vulnerabilities worth triaging
Ranked by exploit probability (EPSS).