Summary

IPv6 Segment Routing (SRv6) is vulnerable to an out-of-bounds read when setting HMAC data due to a lack of validation in the SEG6_ATTR_SECRETLEN attribute. This could allow an attacker to read up to 64 bytes of data past the skb end pointer and into skb_shared_info, potentially leading to information disclosure.

Products Affected

• Brocade SANnav base OS (OVA deployments) 2.3.0 through 2.3.1a and 2.4.0
• Brocade ASCG base OS (OVA deployments) before 3.1.0

Products Not Affected

• Brocade Fabric OS versions 9.2.0 through 9.2.2
  [VEX Justification: Vulnerable_code_not_in_execute_path]
• Brocade Fabric OS versions before 9.2.0
  [VEX Justification: Component_not_present]
• Brocade SANnav standard deployments
  [VEX Justification: Component_not_present]
• Brocade ASCG standard deployments
  [VEX Justification: Component_not_present]

Solution

• While not exploitable, security update provided in Brocade Fabric OS 9.2.1c and 9.2.2a
• Security update provided in Brocade SANnav base OS (OVA deployment) version 2.3.1b and 2.4.0a
• SANnav base OS Security update also provided in the sannav_ova_8x_os_12_2024 OVA patch. The OVA patch can be applied to 2.3.0, 2.3.0a, 2.3.1, 2.3.1a, 2.4.0 versions
• Security update provided in Brocade ASCG base OS (OVA deployment) 3.1.0

Revision History

Disclaimer

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