Coturn: Stack buffer overflow in decode_oauth_token_gcm()
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
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| coturn | coturn | affected |
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No data.
| Vendor | Product | Versions | ||||||||
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| Coturn | Coturn |
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No CVSS v4.0
No CVSS v3.0
No CVSS v2
This CVE is not in the KEV list.
Exploit prediction score: < 1% (0.675% probability within 30 days)
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ssvc
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| First Time appeared |
Coturn
Coturn coturn |
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| Vendors & Products |
Coturn
Coturn coturn |
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| Description | Coturn is a free open source implementation of TURN and STUN Server. Versions prior to 4.10.0 contain a stack buffer overflow in decode_oauth_token_gcm(). A uint16_t nonce_len field read from an attacker-supplied OAuth access token (0-65535) is passed directly to memcpy() as the copy length into a 256-byte stack buffer (oauth_encrypted_block.nonce[256]) without bounds checking. The overflow occurs before AES-GCM authentication is verified, the attacker does not need to know the OAuth key or produce a valid AES-GCM token. Up to 735 bytes of attacker-controlled data are written past the buffer, may corrupt adjacent stack data, including control-flow data depending on compiler, ABI, and mitigations. Requires --oauth mode (non-default). This may provide a plausible RCE primitive depending on exploit mitigations; because coturn is widely deployed for WebRTC TURN/STUN and --oauth is commonly recommended, impact can be broad. This issue has been fixed in version 4.10.0. | |
| Title | Coturn: Stack buffer overflow in decode_oauth_token_gcm() | |
| Weaknesses | CWE-120 | |
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| Metrics |
cvssV3_1
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