BIG-IP: Integer Overflow or Wraparound
CVE-2022-28705 is a high-severity integer overflow or wraparound vulnerability in BIG-IP from F5, with a CVSS 3.1 base score of 7.5 out of 10. It can be exploited remotely over the network by an unauthenticated attacker, without any action from a user. The record lists versions 16.1.2.2, 15.1.5.1, 14.1.4.6 as the first without the flaw, so updating BIG-IP to one of those releases or later removes the exposure. There is no confirmed exploitation so far. EPSS estimates a 0.93% chance of exploitation within 30 days, higher than 61% of scored CVEs.
High severity with no evidence of exploitation so far.
What to do
- Update BIG-IP to 16.1.2.2 or 15.1.5.1 or 14.1.4.6 or 13.1.5, whichever matches your release line, or a later version.
- Read the advisory on support.f5.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
| Vendor | Product | Affected versions | Fixed in |
|---|---|---|---|
| F5 | BIG-IP | 16.1.x up to, but not including, 16.1.2.2; 15.1.x up to, but not including, 15.1.5.1; 14.1.x up to, but not including, 14.1.4.6; 13.1.x up to, but not including, 13.1.5 | 16.1.2.2, 15.1.5.1, 14.1.4.6, 13.1.5 |
| F5 | Big-ip Access Policy Manager | 13.1.0; 13.1.1; 13.1.3; 13.1.4; 13.1.5; 14.1.0; 14.1.2; 14.1.3; and 11 more ranges | Not stated |
| F5 | Big-ip Advanced Firewall Manager | 13.1.0; 13.1.1; 13.1.3; 13.1.4; 13.1.5; 14.1.0; 14.1.2; 14.1.3; and 11 more ranges | Not stated |
| F5 | Big-ip Analytics | 13.1.0; 13.1.1; 13.1.3; 13.1.4; 13.1.5; 14.1.0; 14.1.2; 14.1.3; and 11 more ranges | Not stated |
| F5 | Big-ip Application Acceleration Manager | 13.1.0; 13.1.1; 13.1.3; 13.1.4; 13.1.5; 14.1.0; 14.1.2; 14.1.3; and 11 more ranges | Not stated |
| F5 | Big-ip Application Security Manager | 13.1.0; 13.1.1; 13.1.3; 13.1.4; 13.1.5; 14.1.0; 14.1.2; 14.1.3; and 11 more ranges | Not stated |
| F5 | Big-ip Domain Name System | 13.1.0; 13.1.1; 13.1.3; 13.1.4; 13.1.5; 14.1.0; 14.1.2; 14.1.3; and 11 more ranges | Not stated |
| F5 | Big-ip Fraud Protection Service | 13.1.0; 13.1.1; 13.1.3; 13.1.4; 13.1.5; 14.1.0; 14.1.2; 14.1.3; and 11 more ranges | Not stated |
| F5 | Big-ip Global Traffic Manager | 13.1.0; 13.1.1; 13.1.3; 13.1.4; 13.1.5; 14.1.0; 14.1.2; 14.1.3; and 11 more ranges | Not stated |
| F5 | Big-ip Link Controller | 13.1.0; 13.1.1; 13.1.3; 13.1.4; 13.1.5; 14.1.0; 14.1.2; 14.1.3; and 11 more ranges | Not stated |
| F5 | Big-ip Local Traffic Manager | 13.1.0; 13.1.1; 13.1.3; 13.1.4; 13.1.5; 14.1.0; 14.1.2; 14.1.3; and 11 more ranges | Not stated |
| F5 | Big-ip Policy Enforcement Manager | 13.1.0; 13.1.1; 13.1.3; 13.1.4; 13.1.5; 14.1.0; 14.1.2; 14.1.3; and 11 more ranges | Not stated |
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
- NoneNo data is disclosed.
- Integrity
- NoneNothing can be modified.
- Availability
- HighThe component can be taken down completely.
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H. Scored by NVD.
| Scoring system | Score | Severity | Scored by |
|---|---|---|---|
| CVSS 3.1 | 7.5 | High | CNA (f5.com) |
| CVSS 3.1 | 7.5 | High | NVD |
| CVSS 2.0 | 5.0 | Medium | NVD |
Official description
On F5 BIG-IP 16.1.x versions prior to 16.1.2.2, 15.1.x versions prior to 15.1.5.1, 14.1.x versions prior to 14.1.4.6, and 13.1.x versions prior to 13.1.5, on platforms with an ePVA and the pva.fwdaccel BigDB variable enabled, undisclosed requests to a virtual server with a FastL4 profile that has ePVA acceleration enabled can cause the Traffic Management Microkernel (TMM) process to terminate. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: Integer Overflow or Wraparound
The product performs a calculation that can produce an integer overflow or wraparound when the logic assumes that the resulting value will always be larger than the original value. This occurs when an integer value is incremented to a value that is too large to store in the associated representation. When this occurs, the value may become a very small or negative number.
How developers prevent this class of flaw
- Ensure that all protocols are strictly defined, such that all out-of-bounds behavior can be identified simply, and require strict conformance to the protocol.
- Use a language that does not allow this weakness to occur or provides constructs that make this weakness easier to avoid. If possible, choose a language or compiler that performs automatic bounds checking.
- Use a vetted library or framework that does not allow this weakness to occur or provides constructs that make this weakness easier to avoid. Use libraries or frameworks that make it easier to handle numbers without unexpected consequences. Examples include safe integer handling packages such as SafeInt (C++) or IntegerLib (C or C++).
More Integer Overflow or Wraparound vulnerabilities (CWE-190)
Timeline
- CVE record published.
- Record last changed materially (score, affected products, status or references).
References
Advisories
Other vulnerabilities in BIG-IP
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F5 BIG-IP APM Heap-based Buffer Overflow Exploited
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Recent Integer Overflow or Wraparound vulnerabilities
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- 9.8 Critical severity
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