EUVD-2025-210332
GHSA-fj4j-92hj-mcwp
Severity by source
AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Local vector with low-privilege requirement matches file-processing trigger; impact is availability-only crash with no confidentiality or integrity consequence.
Primary rating from Vendor (mitre).
CVSS VectorVendor: mitre
Lifecycle Timeline
4DescriptionCVE.org
GPAC Multimedia Open Source Project GPAC Project/MP4Box 2.5-DEV-rev1593-gfe88c3545-master is affected by: Buffer Overflow. The impact is: cause a denial of service (local). The component is: filter_core/filter_pid.c (L:574-580): function gf_filter_pid_inst_swap_delete_task() improperly accesses freed objects during PID instance swap/delete cleanup, leading to heap use-after-free. The attack vector is: Local (AV:L): a local, authenticated user who processes a specially crafted MPEG-2 TS/MP4 file with MP4Box can trigger the bug during filter teardown (PID instance swap/delete), causing a crash. ¶¶ In GPAC s MP4Box, gf_filter_pid_inst_swap_delete_task() in filter_core/filter_pid.c may dereference objects after they have been freed when cleaning up PID instances after a swap/delete operation. Crafted inputs (e.g., malformed MPEG-2 TS) can trigger a heap use-after-free and crash; exploitation may be possible.
AnalysisAI
Heap use-after-free in GPAC MP4Box 2.5-DEV-rev1593-gfe88c3545-master crashes the application when a local authenticated user processes a specially crafted MPEG-2 TS or MP4 file. The defect resides in gf_filter_pid_inst_swap_delete_task() within filter_core/filter_pid.c, where PID instance cleanup dereferences already-freed objects during a swap/delete operation, causing a heap corruption and denial of service. No public exploit has triggered active exploitation per CISA KEV, but a proof-of-concept is publicly available; EPSS sits at 0.18% (7th percentile), consistent with limited real-world targeting.
Technical ContextAI
GPAC is an open-source multimedia framework used for MP4/MPEG processing; MP4Box is its command-line muxing/demuxing tool. The vulnerable component is filter_core/filter_pid.c, specifically the task callback gf_filter_pid_inst_swap_delete_task() around lines 574-580. During filter graph teardown, when a PID instance undergoes a swap-then-delete operation, the function does not check whether a re-link is already pending (detach_pending flag), and proceeds to dereference a pidinst object after the underlying memory has been freed. This matches CWE-122 (Heap-based Buffer Overflow) in classification, though the root cause is more precisely a use-after-free (UAF) pattern - freed heap memory is accessed during callback execution triggered by crafted filter graph state. The upstream fix (commits 976dacf6 and aed9c94e) adds the guard condition else if (!pidinst->detach_pending) to prevent re-linking when a pending detach already exists, breaking the UAF trigger path. CPE data provided is non-informative (n/a), so exact version scope is bounded only by the named dev revision.
RemediationAI
Apply the upstream fix commits available at https://github.com/gpac/gpac/commit/976dacf65cb6986a4e4f350fb8d3ed0a17dc3a77 and https://github.com/gpac/gpac/commit/aed9c94e92e8ba362ddb29c767c519478f46f195. These commits add the !pidinst->detach_pending guard to prevent re-entry into the relinking path when a detach is already in progress. No vendor-released tagged patch version has been independently confirmed at time of analysis - the fix is available as upstream commits only (pre-release). As a compensating control, restrict MP4Box from processing untrusted or externally-supplied MPEG-2 TS and MP4 files; this fully eliminates the attack surface since the vulnerability is triggered only via file processing. In automated pipelines, sandbox MP4Box execution (e.g., via seccomp, container isolation, or a dedicated unprivileged user) so that a crash does not affect other services - the DoS impact is limited to the MP4Box process itself.
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Same weakness CWE-122 – Heap-based Buffer Overflow
View allSame technique Buffer Overflow
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External POC / Exploit Code
Leaving vuln.today