| タイトル | Open5GS v2.7.2 Memory Corruption |
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| 説明 | Open5GS v2.7.2 is affected by a stack-based buffer overflow in open5gs-pcrfd over the Diameter Rx interface. The vulnerability exists in the handling of Diameter AA-Request (AAR) messages in src/pcrf/pcrf-rx-path.c. When open5gs-pcrfd processes a crafted Rx AAR message containing excessive Media-Component-Description or Media-Sub-Component AVPs, the indexes rx_message.ims_data.num_of_media_component and media_component->num_of_sub can overflow. These indexes are then used to select entries in fixed-size stack-based arrays without sufficient bounds checking. As a result, a crafted Diameter Rx message can move a write pointer outside the intended stack object and overwrite stack memory with attacker-controlled 4-byte values. An attacker with network access to the Diameter Rx listener can send a crafted AAR message to trigger stack memory corruption in open5gs-pcrfd. This may result in process termination and denial of service, and may have additional impact depending on build configuration and runtime protections. |
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| ソース | ⚠️ https://github.com/open5gs/open5gs/issues/3157 |
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| ユーザー | WeiYi (UID 96864) |
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| 送信 | 2026年06月24日 08:47 (2 月 ago) |
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| モデレーション | 2026年08月09日 19:50 (2 months later) |
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| ステータス | 承諾済み |
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| VulDBエントリ | 387282 [Open5GS 迄 2.7.1 Diameter Rx src/pcrf/pcrf-rx-path.c pcrf_rx_aar_cb num_of_media_component/num_of_sub メモリ破損] |
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| ポイント | 20 |
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