Aruba Access Points: 100 Series; 103 Series…: Buffer Copy without Checking Size of Input
CVE-2022-37889 is a critical-severity buffer copy without checking size of input vulnerability in Aruba Access Points: 100 Series; 103 Series; 110 Series; 120 Series; 130 Series; 200 Series; 207 Series; 210 Series; 220 Series; 260 Series; 300 Series; 303 Series; 310 Series; 318 Series Hardened Access Points; 320 Series; 330 Series; 340 Series; 370 Series; 500 Series; 510 Series; 530 Series; 550 Series; 630 Series; 650 Series;, with a CVSS 3.1 base score of 9.8 out of 10. It can be exploited remotely over the network by an unauthenticated attacker, without any action from a user. Affected Aruba Access Points: 100 Series; 103 Series; 110 Series; 120 Series; 130 Series; 200 Series; 207 Series; 210 Series; 220 Series; 260 Series; 300 Series; 303 Series; 310 Series; 318 Series Hardened Access Points; 320 Series; 330 Series; 340 Series; 370 Series; 500 Series; 510 Series; 530 Series; 550 Series; 630 Series; 650 Series; versions: Aruba InstantOS 6.4.x: 6.4.4.8-4.2.4.20 and below; Aruba InstantOS 6.5.x: 6.5.4.23 and below; Aruba InstantOS 8.6.x: 8.6.0.18 and below, and others listed below. The record does not name a fixed version, so check the vendor advisory. There is no confirmed exploitation so far. EPSS estimates a 2.13% chance of exploitation within 30 days, higher than 82% of scored CVEs.
Critical severity: a successful attack would have severe impact.
What to do
- Update Arubaos to 10.3.1.1 or a later version.
- Update Instant to 6.4.4.8-4.2.4.21 or 6.5.4.24 or 8.6.0.19 or 8.7.1.10, whichever matches your release line, or a later version.
- Read the advisory on arubanetworks.com for workarounds and exact fixed builds.
- Until you can update, restrict network access to the affected service so it is not reachable from untrusted networks.
Affected products and versions
Version data comes from the organisation that assigned the CVE. Confirm against the vendor advisory before deciding you are unaffected.
How the severity score breaks down
- Attack vector
- NetworkCan be exploited remotely over a network, including the internet.
- Attack complexity
- LowNo special conditions are needed; the attack works reliably.
- Privileges required
- NoneNo account or login is needed.
- User interaction
- NoneNo action by a victim is required.
- Scope
- UnchangedImpact stays within the vulnerable component.
- Confidentiality
- HighAll data handled by the component can be read.
- Integrity
- HighData or code can be modified at will.
- Availability
- HighThe component can be taken down completely.
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H. Scored by NVD.
Official description
There are buffer overflow vulnerabilities in multiple underlying services that could lead to unauthenticated remote code execution by sending specially crafted packets destined to the PAPI (Aruba Networks AP management protocol) UDP port (8211). Successful exploitation of these vulnerabilities results in the ability to execute arbitrary code as a privileged user on the underlying operating system of Aruba InstantOS 6.4.x: 6.4.4.8-4.2.4.20 and below; Aruba InstantOS 6.5.x: 6.5.4.23 and below; Aruba InstantOS 8.6.x: 8.6.0.18 and below; Aruba InstantOS 8.7.x: 8.7.1.9 and below; Aruba InstantOS 8.10.x: 8.10.0.1 and below; ArubaOS 10.3.x: 10.3.1.0 and below; Aruba has released upgrades for Aruba InnstantOS that address these security vulnerabilities.
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: Buffer Copy without Checking Size of Input
The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer.
How developers prevent this class of flaw
- Use a language that does not allow this weakness to occur or provides constructs that make this weakness easier to avoid. For example, many languages that perform their own memory management, such as Java and Perl, are not subject to buffer overflows. Other languages, such as Ada and C#, typically provide overflow protection, but the protection can be disabled by the programmer. Be wary that a language's interface to native code may still be subject to overflows, even if the language itself is theoretically safe.
- Use a vetted library or framework that does not allow this weakness to occur or provides constructs that make this weakness easier to avoid. Examples include the Safe C String Library (SafeStr) by Messier and Viega, and the Strsafe.h library from Microsoft. These libraries provide safer versions of overflow-prone string-handling functions.
- Use automatic buffer overflow detection mechanisms that are offered by certain compilers or compiler extensions. Examples include: the Microsoft Visual Studio /GS flag, Fedora/Red Hat FORTIFY_SOURCE GCC flag, StackGuard, and ProPolice, which provide various mechanisms including canary-based detection and range/index checking. D3-SFCV (Stack Frame Canary Validation) from D3FEND discusses canary-based detection in detail.
More Buffer Copy without Checking Size of Input vulnerabilities (CWE-120)
Timeline
- CVE record published.
- Record last changed materially (score, affected products, status or references).
References
Third-party and government advisories
- cert-portal.siemens.com/productcert/pdf/ssa-506569.pdfThird Party Advisory
Other vulnerabilities in Aruba Access Points: 100 Series; 103 Series; 110 Series; 120 Series; 130 Series; 200 Series; 207 Series; 210 Series; 220 Series; 260 Series; 300 Series; 303 Series; 310 Series; 318 Series Hardened Access Points; 320 Series; 330 Series; 340 Series; 370 Series; 500 Series; 510 Series; 530 Series; 550 Series; 630 Series; 650 Series;
- 7.8 High severity
- 9.8 Critical severity
- 9.8 Critical severity
- 9.8 Critical severity
- 9.8 Critical severity
- 9.8 Critical severity
Recent Buffer Copy without Checking Size of Input vulnerabilities
- 9.8 Critical severity
- 9.8 Critical severity
- 9.8 Critical severity
- 8.2 High severity
- 9.1 Critical severity
- 9.8 Critical severity
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