CVE-2022-27255

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 v3.1 NVD

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

CVSS v2.0 NVD

7.5 HIGHAV:N/AC:L/Au:N/C:P/I:P/A:P

EPSS

36.70% chance of exploitation in the next 30 days, 98th percentile

Published

2022-08-01

Updated

2024-08-03

Proof-of-concept exploits (2)

• infobyte/cve-2022-27255284★ · 2022-08-30
• stryker-project/CVE-2022-27255-checker10★ · 2022-08-29

Security advisories

• https://www.realtek.com/images/safe-report/Realtek_APRouter_SDK_Advisory-CVE-2022-27255.p…
• https://forum.defcon.org/node/241835

References

• CVE Record
• NVD entry

Related

• CVE-2016-2776
• CVE-2021-21086
• CVE-2023-21036