OpenAirInterface Core Network v2.2.1 has a stack-based buffer overflow vulnerability in the OAI CN5G UDM Nudm_UEAU Generate Authentication Data endpoint. The UDM passes attacker-controlled resynchronizationInfo.rand and auts values to conv::hex_str_to_uint8(), which converts arbitrary-length hex strings into fixed-size stack buffers without validating the destination size. An unauthenticated attacker with access to the SBI interface and a valid SUPI can submit an oversized value to overwrite adjacent stack memory, corrupt the stack canary, and terminate the UDM process.
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Affected Vendors & Products
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History
Mon, 02 Nov 2026 20:30:00 +0000
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ssvc
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Mon, 02 Nov 2026 19:30:00 +0000
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| Weaknesses | CWE-121 | |
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cvssV3_1
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Mon, 02 Nov 2026 18:00:00 +0000
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| Description | OpenAirInterface Core Network v2.2.1 has a stack-based buffer overflow vulnerability in the OAI CN5G UDM Nudm_UEAU Generate Authentication Data endpoint. The UDM passes attacker-controlled resynchronizationInfo.rand and auts values to conv::hex_str_to_uint8(), which converts arbitrary-length hex strings into fixed-size stack buffers without validating the destination size. An unauthenticated attacker with access to the SBI interface and a valid SUPI can submit an oversized value to overwrite adjacent stack memory, corrupt the stack canary, and terminate the UDM process. | |
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Status: PUBLISHED
Assigner: mitre
Published: 2026-11-02T00:00:00.000Z
Updated: 2026-11-02T19:05:07.660Z
Reserved: 2026-10-07T00:00:00.000Z
Link: CVE-2026-106808
Updated: 2026-11-02T19:04:15.287Z
Status : Deferred
Published: 2026-11-02T18:18:34.120
Modified: 2026-11-02T19:35:33.347
Link: CVE-2026-106808
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