Buffer overflow in Sap Netweaver As Abap
CVE-2021-27628
SAP NetWeaver ABAP Server and ABAP Platform (Dispatcher), versions - KRNL32NUC - 7.22,7.22EXT, KRNL32UC - 7.22,7.22EXT, KRNL64NUC - 7.22,7.22EXT,7.49, KRNL64UC - 8.04,7.22,7.22EXT,7.49,7.53,7.73, KERNEL - 7.22,8.04,7.49,7.53,7.73,7.77,7.81,7.82,7.83, allows an unauthenticated attacker without specific knowledge of the system to send a specially crafted packet over a network which will trigger an internal error in the system due to improper input validation in method DpRTmPrepareReq() causing the system to crash and rendering it unavailable. In this attack, no data in the system can be viewed or modified.
Vulnerability class: Buffer Overflow
EPSS: 0.015 (71.8th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
Affected products
- Sap Netweaver_as_abap — versions kernel_7.22, kernel_7.49, kernel_7.53
- Sap Se Netweaver Abap Server And Platform (Dispatcher) — versions < KRNL32NUC - 7.22, < 7.22EXT, < KRNL32UC - 7.22
Weakness classification (CWE)
Public proof-of-concept exploits
References
- cna@sap.com (Broken Link, Vendor Advisory)
- cna@sap.com (Permissions Required, Vendor Advisory)
Frequently asked questions
- What is CVE-2021-27628?
- CVE-2021-27628 is a high-severity vulnerability in Sap Netweaver As Abap, classified under Out-of-bounds Write. CVSS score: 7.5/10. Published 2021-06-09.
- How severe is CVE-2021-27628?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2021-27628 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.