CVE-2026-90778
Description
A flaw was found in SIPp. Unauthenticated remote attackers can send crafted Session Initiation Protocol (SIP) messages with oversized tag parameters in the 'To' header. This can lead to a buffer overflow in the get_peer_tag() function, allowing attackers to crash the SIPp process. This vulnerability results in a Denial of Service (DoS).
Statement
Red Hat Product Security has determined that this vulnerability does not affect any currently supported Red Hat product. This assessment may evolve based on further analysis and discovery. For more information about this vulnerability and the products it affects, please see the linked references.
Mitigation
To mitigate this issue, restrict network access to the SIPp service to trusted hosts only. Implement firewall rules to limit incoming connections to the ports used by SIPp, typically UDP/5060, from known and authorized sources. If SIPp is not actively in use, consider disabling or stopping the service to prevent potential exploitation.
Understanding the Weakness (CWE)
Integrity,Confidentiality,Availability
Technical Impact: Modify Memory; Execute Unauthorized Code or Commands
Buffer overflows often can be used to execute arbitrary code, which is usually outside the scope of the product's implicit security policy. This can often be used to subvert any other security service.
Availability
Technical Impact: Modify Memory; DoS: Crash, Exit, or Restart; DoS: Resource Consumption (CPU)
Buffer overflows generally lead to crashes. Other attacks leading to lack of availability are possible, including putting the product into an infinite loop.
Frequently Asked Questions
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