CVE-2026-90779
Description
A flaw was found in SIPp. A malicious Session Initiation Protocol (SIP) server can exploit this by sending a specially crafted SIP authentication challenge with oversized algorithm parameters. This can lead to a stack buffer overflow in the createAuthHeader() function, causing the client process to crash and resulting in a denial of service.
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
Since this vulnerability requires SIPp to connect to a malicious SIP server, the primary mitigation is to restrict SIPp usage to trusted network environments. Avoid connecting SIPp instances to untrusted or publicly accessible SIP servers.
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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