| 标题 | GPAC up to commit f1219cde (2026-07-25) Denial of Service |
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| 描述 | A vulnerability was found in GPAC up to commit f1219cde (2026-07-25) and classified as problematic. Affected is the function xmt_parse_element in the file scene_manager/loader_xmt.c:2104 of the component MP4Box. The manipulation via a crafted XMT file processed with the -add argument leads to a reachable assertion (assert(0)) when node types mismatch (OrderedGroup vs Untransform/UI_ROOT), causing an immediate process abort. It is possible to launch the attack locally. User interaction is required.
Technical Details
- Affected file/function: scene_manager/loader_xmt.c:2104 / xmt_parse_element
- Vulnerable parameter: XMT scene element parsing with node type mismatch (OrderedGroup vs Untransform/UI_ROOT)
- Attack vector: Local
- Privileges required: None
- Trigger condition: Processing a crafted MP4 file with "MP4Box -add" causes the XMT parser to reach assert(0) when encountering an unexpected element type. Requires --enable-debug build.
Impact
- Confidentiality: None
- Integrity: None
- Availability: High
CVSS v3.1
Score: 5.5 (Medium)
Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Timeline
- Discovered: 2026-07-27
- Vendor notified: 2026-07-27
- Patch released: 2026-07-28
- Public disclosure: 2026-07-27
Countermeasure
Apply the upstream patch. Replace the reachable assert(0) with proper error handling that gracefully rejects unexpected element types. |
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| 来源 | ⚠️ https://github.com/r1ck9-2q/cve_summit/blob/main/Vuln-GPAC-MP4Box-Assertion-Failure-in-xmt_parse_element.md |
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| 用户 | r1ck9 (UID 97869) |
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| 提交 | 2026-08-02 17時39分 (1 月前) |
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| 管理 | 2026-09-12 21時39分 (1 month later) |
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| 状态 | 已接受 |
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| VulDB条目 | 403193 [GPAC 直到 f1219cde MP4Box loader_xmt.c xmt_parse_element 拒绝服务] |
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| 积分 | 20 |
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