CVE-2022-27255 — CRITICAL (9.8)

Vulnerability Description

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.

CVSS Score

9.8

CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

HIGH

Integrity

HIGH

Availability

HIGH

Affected Products

Vendor	Product	Versions
Realtek	Ecos Rsdk Firmware	1.5.7p1
Realtek	Ecos Rsdk	-
Realtek	Ecos Msdk Firmware	4.9.4p1
Realtek	Ecos Msdk	-

Related Weaknesses (CWE)

CWE-20

References

https://forum.defcon.org/node/241835Third Party Advisory
https://www.realtek.com/images/safe-report/Realtek_APRouter_SDK_Advisory-CVE-202Vendor Advisory
https://forum.defcon.org/node/241835Third Party Advisory
https://www.realtek.com/images/safe-report/Realtek_APRouter_SDK_Advisory-CVE-202Vendor Advisory

FAQ

What is CVE-2022-27255?

CVE-2022-27255 is a vulnerability with a CVSS score of 9.8 (CRITICAL). 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 vi...

How severe is CVE-2022-27255?

CVE-2022-27255 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.

Is there a patch for CVE-2022-27255?

Check the references section above for vendor advisories and patch information. Affected products include: Realtek Ecos Rsdk Firmware, Realtek Ecos Rsdk, Realtek Ecos Msdk Firmware, Realtek Ecos Msdk.