CVEvulnerability
CVE-2020-24034
8.8 HIGH
Official page ↗
- Status
- Modified
- Published
- 2020-09-01
- Last modified
- 2026-06-17
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 8.8 HIGH — CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- CVSS 2.0 ([email protected])
- 9.0 HIGH — AV:N/AC:L/Au:S/C:C/I:C/A:C
- Weaknesses
- CWE-502
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.
Affected configurations
• sagemcom f\@st 5280 router firmware 1.150.61
Related
Weakness · CWE (1)
- CWE-502 Deserialization of Untrusted Data weakness
References
- http://packetstormsecurity.com/files/159026/Sagemcom-F-ST-5280-Privilege-Escalation.html Exploit, Third Party Advisory, VDB Entry
- http://seclists.org/fulldisclosure/2020/Sep/3 Mailing List, Third Party Advisory
- https://seclists.org/fulldisclosure/2020/Sep/3 Mailing List, Third Party Advisory
- https://support.sagemcom.com/fr/haut-debit Vendor Advisory
- http://packetstormsecurity.com/files/159026/Sagemcom-F-ST-5280-Privilege-Escalation.html Exploit, Third Party Advisory, VDB Entry
- http://seclists.org/fulldisclosure/2020/Sep/3 Mailing List, Third Party Advisory
- https://seclists.org/fulldisclosure/2020/Sep/3 Mailing List, Third Party Advisory
- https://support.sagemcom.com/fr/haut-debit Vendor Advisory