CWE
20 119
Advisory Published
Updated

CVE-2022-27255: Input Validation

First published: Mon Aug 01 2022(Updated: )

In Realtek eCos RSDK 1.5.7p1 and MSDK 4.9.4p1, the SIP ALG function that rewrites SDP data has a stack-based buffer overflow. This allows an attacker to remotely execute code without authentication via a crafted SIP packet that contains malicious SDP data.

Credit: cve@mitre.org

Affected SoftwareAffected VersionHow to fix
Realtek Ecos Rsdk Firmware=1.5.7p1
Realtek eCos RSDK
Realtek Ecos Msdk Firmware=4.9.4p1
Realtek Ecos Msdk

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Frequently Asked Questions

  • What is the severity of CVE-2022-27255?

    The severity of CVE-2022-27255 is critical with a CVSS score of 9.8.

  • What is the affected software for CVE-2022-27255?

    The affected software for CVE-2022-27255 includes Realtek eCos RSDK Firmware 1.5.7p1 and Realtek eCos MSDK Firmware 4.9.4p1.

  • How does the vulnerability in CVE-2022-27255 allow remote code execution?

    The vulnerability in CVE-2022-27255 allows remote code execution by exploiting a stack-based buffer overflow in the SIP ALG function that rewrites SDP data.

  • Is authentication required to exploit CVE-2022-27255?

    No, authentication is not required to exploit CVE-2022-27255.

  • How can I fix CVE-2022-27255?

    To fix CVE-2022-27255, it is recommended to apply the latest patches or updates provided by Realtek.

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