CVE-2026-41415
Description
A flaw was found in PJSIP, a multimedia communication library. A remote attacker could exploit this vulnerability by sending a specially crafted Session Initiation Protocol (SIP) multipart message containing a malformed Content-ID URI. Insufficient length validation during parsing of this URI can lead to an out-of-bounds read, potentially causing a denial of service.
Statement
This is an Important denial of service flaw in PJSIP, a multimedia communication library. A remote attacker can trigger an out-of-bounds read by sending a specially crafted SIP multipart message with a malformed Content-ID URI, leading to service unavailability. This vulnerability affects Red Hat Community Projects that utilize PJSIP, such as pjproject and asterisk.
Mitigation
Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.
Understanding the Weakness (CWE)
Confidentiality
Technical Impact: Read Memory
An attacker could get secret values such as cryptographic keys, PII, memory addresses, or other information that could be used in additional attacks.
Confidentiality
Technical Impact: Bypass Protection Mechanism
Out-of-bounds memory could contain memory addresses or other information that can be used to bypass ASLR and other protection mechanisms in order to improve the reliability of exploiting a separate weakness for code execution.
Availability
Technical Impact: DoS: Crash, Exit, or Restart
An attacker could cause a segmentation fault or crash by causing memory to be read outside of the bounds of the buffer. This is especially likely when the code reads a variable amount of data and assumes that a sentinel exists to stop the read operation, such as a NUL in a string.
Other
Technical Impact: Varies by Context
The read operation could produce other undefined or unexpected results.
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