CVE-2026-7737

Description

A flaw was found in osrg GoBGP. A remote attacker can exploit an out-of-bounds read vulnerability within the BMP Parser component, specifically in the BMPPeerUpNotification.ParseBody and BMPStatisticsReport.ParseBody functions. This manipulation can lead to a denial of service, making the affected system unavailable.

Statement

This is an Important denial of service vulnerability in osrg GoBGP. A remote attacker can trigger an out-of-bounds read within the BMP Parser by sending specially crafted BGP Monitoring Protocol messages, leading to service unavailability. The flaw's impact is significant due to its remote exploitability and direct effect on network routing stability.

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)

CWE-125

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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