| Package | Affected versions | Patched versions |
|---|---|---|
| asterisk | = 12.0.0= 12.1.0 |
res/res_pjsip_exten_state.c in the PJSIP channel driver in Asterisk Open Source 12.x before 12.1.0 allows remote authenticated users to cause a denial of service (crash) via a SUBSCRIBE request without any Accept headers, which triggers an invalid pointer dereference.
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