Product: GPAC (MP4Box)
Affected: gpac/gpac prior to fix commit
62714f27c64a3d1eb7e880f9eed2d38673cb43ce
CVE: CVE-2025-60464
CWE: CWE-476 (NULL Pointer Dereference)
CVSS 3.1: 4.3 MEDIUM (AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L)
Reporter: sigdevel <https://infosec.exchange/@sigdevel>
Description:
The gf_sei_load_from_state_internal() function in GPAC's SEI loader
(filters/sei_load.c:225) processes Supplemental Enhancement Information
payloads embedded in HEVC and VVC bitstreams transported over MPEG-2 TS.
When MP4Box inspects a crafted TS file containing HEVC/VVC streams with
malformed NAL units and corrupted PMT descriptors, the NALU demuxer
naludmx_configure_pid() frees the codec state buffer at
filters/reframe_nalu.c:370 during PID reconfiguration.
The function subsequently reads 1 byte from the freed 529,176-byte codec
state region at address 0x7f7518dceb04 (529,156 bytes inside the freed
allocation) without validating whether the buffer has been released,
resulting in a heap-use-after-free and process crash (Denial of Service).
Crash is reproducible on the current master branch at the time of
discovery. No authentication or special privileges required beyond
ability to provide a crafted file.
Reproduction:
-Build-opts: --static-build --static-bin --static-modules --enable-debug
--extra-cflags="-g -O0" ;
-Command: ./MP4Box -info
32_filters_sei_load_c_225_in_gf_sei_load_from_state_internal
Asan-log:
==33468==ERROR: AddressSanitizer: heap-use-after-free on address 0x7f7518dceb04
at pc 0x7f751b19dbf5 bp 0x7ffc77f69500 sp 0x7ffc77f694f8
READ of size 1 at 0x7f7518dceb04 thread T0
#0 0x7f751b19dbf4 in gf_sei_load_from_state_internal filters/sei_load.c:225
#1 0x7f751b19dbf4 in gf_sei_load_from_state filters/sei_load.c:265
#2 0x7f751b0ffd02 in naludmx_finalize_au_flags filters/reframe_nalu.c:2360
PoC:
https://github.com/sigdevel/pocs/blob/main/res/gpac/MP4Box/32/32_filters_sei_load_c_225_in_gf_sei_load_from_state_internal
References:
https://github.com/gpac/gpac/issues/3278
https://www.cve.org/CVERecord?id=CVE-2025-60464
https://infosec.exchange/@sigdevel/116778370895014131
——
Best regards, Alexander A. Shvedov
@sigdevel
