CVE-2019-2107: In ihevcd_parse_pps of ihevcd_parse_headers.c, there is a possible out of bounds write due to a missing bounds check. This could lead to remote code execution…

PriorityP265high8.8CVSS 3.0

AVNACLPRNUIRSUCHIHAH

EXPLOIT

EPSS

9.00%

95.3th percentile

In ihevcd_parse_pps of ihevcd_parse_headers.c, there is a possible out of bounds write due to a missing bounds check. This could lead to remote code execution with no additional execution privileges needed. User interaction is needed for exploitation. Product: Android. Versions: Android-7.0 Android-7.1.1 Android-7.1.2 Android-8.0 Android-8.1 Android-9. Android ID: A-130024844.

Affected

8 ranges

Vendor	Product	Version range	Fixed in
google	android	—	—
google	android	—	—
google	android	—	—
google	android	—	—
google	android	—	—
google	android	—	—
google	android	—	—
google	android	—	—

Detection & IOCsextracted from sources · hover to see the quote

urlhttps://gitlab.com/exploit-database/exploitdb-bin-sploits/-/raw/main/bin-sploits/47157.zip↗

urlhttps://gitlab.com/exploit-database/exploitdb-bin-sploits/-/raw/main/bin-sploits/47119.zip↗

filenamehevc-crash-poc.mp4↗

filenamevideopoc.mp4↗

processmediaextractor↗

→Monitor for SIGSEGV (signal 11) crashes in the mediaextractor process (media.extractor) on Android 7.0–9, particularly with fault addresses consistent with out-of-bounds write, when processing HEVC/H.265 video files. ↗
→Detect HEVC/H.265 (video/hevc) media files with malformed tile width parameters — look for log entries 'Invalid tile widths' and 'PPS id out of range' from the HEVC decoder, which indicate a crafted file triggering the vulnerable code path in ihevcd_parse_pps. ↗
→The exploit requires tiles to be enabled in the HEVC PPS (ps_pps->i1_tiles_enabled_flag set). Inspect suspicious HEVC files for tile-enabled PPS structures with tile widths exceeding pic_wd_in_ctb bounds as the trigger condition. ↗
→The vulnerable codec component is OMX.google.hevc.decoder running under the mediacodec user. Alert on unexpected crashes or tombstones generated by this component when processing externally-supplied .mp4 or HEVC container files. ↗
→Check Android tombstone/crash logs for crashes in the mediaextractor process on arm64 devices (ABI: arm64) with SEGV_MAPERR, as the PoC confirmed exploitation on Samsung Galaxy S7 Edge (hero2lte) running Android 8.0. ↗

·Non-Google Android builds using FFmpeg (e.g., LineageOS) reject the malicious HEVC file at the FFmpeg layer before reaching the vulnerable libhevc code, so the crash/RCE path is specific to stock Android using OMX.google.hevc.decoder (libhevc). ↗
·Affected Android versions are 7.0, 7.1.1, 7.1.2, 8.0, 8.1, and 9 only. Devices patched with the 2019-07-01 Android Security Bulletin are not vulnerable. ↗

CVSS provenance

nvdv3.08.8HIGHCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

nvdv2.09.3CRITICALAV:N/AC:M/Au:N/C:C/I:C/A:C

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