CVE-2015-8364 in FFmpeg
Summary
by MITRE
Integer overflow in the ff_ivi_init_planes function in libavcodec/ivi.c in FFmpeg before 2.6.5, 2.7.x before 2.7.3, and 2.8.x through 2.8.2 allows remote attackers to cause a denial of service (out-of-bounds heap-memory access) or possibly have unspecified other impact via crafted image dimensions in Indeo Video Interactive data.
Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.
Analysis
by VulDB Data Team • 06/28/2022
The vulnerability CVE-2015-8364 represents a critical integer overflow flaw within the FFmpeg multimedia framework that affects multiple versions of the library. This issue resides in the ff_ivi_init_planes function located in the libavcodec/ivi.c file, which processes Indeo Video Interactive (IVI) video data. The vulnerability manifests when processing crafted image dimensions in IVI video streams, creating a scenario where an attacker can manipulate the video decoding process to trigger unintended behavior.
The technical exploitation of this vulnerability stems from improper bounds checking during the initialization of video planes within the IVI decoding routine. When an attacker crafts malicious video data with specially designed image dimensions, the integer overflow occurs during calculations that determine memory allocation sizes for video plane structures. This overflow results in insufficient memory allocation or incorrect memory addressing, leading to out-of-bounds heap memory access patterns. The flaw operates at the intersection of integer arithmetic and memory management, making it particularly dangerous as it can potentially lead to memory corruption that may be exploited for more severe attacks beyond simple denial of service.
The operational impact of CVE-2015-8364 extends beyond simple denial of service scenarios, as the vulnerability can potentially enable remote code execution or arbitrary code execution depending on the specific system configuration and memory layout. Attackers can leverage this flaw by delivering malicious IVI video content to systems running vulnerable FFmpeg versions, causing applications that utilize FFmpeg for video processing to crash or behave unpredictably. The vulnerability affects a wide range of software that depends on FFmpeg for multimedia processing, including media players, streaming servers, and content management systems that handle video content. This makes the impact particularly severe as the vulnerability can be triggered through common media playback scenarios or automated content processing workflows.
Security professionals should prioritize patching affected systems as this vulnerability has been actively exploited in the wild. The fix involves implementing proper integer overflow checks and bounds validation in the ff_ivi_init_planes function, ensuring that calculated memory allocation sizes remain within acceptable limits. Organizations should also implement network segmentation and content filtering to prevent the delivery of potentially malicious video content to systems running vulnerable FFmpeg versions. The vulnerability aligns with CWE-190, which specifically addresses integer overflow conditions, and may map to ATT&CK techniques involving privilege escalation and remote code execution through media processing vulnerabilities. System administrators should monitor for exploitation attempts and maintain updated threat intelligence feeds to detect potential attacks leveraging this vulnerability.