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Improper Restriction of Operations within the Bounds of a Memory Buffer


Severity Medium
Score 6.8/10


The jpeg2000_read_main_headers function in "libavcodec/jpeg2000dec.c" in FFmpeg prior to 2.4.12, 2.5.x prior to 2.5.9, 2.6.x prior to 2.6.5, 2.7.x prior to 2.7.3, and 2.8.x prior to 2.8.3 and 2.9-dev does not enforce uniqueness of the SIZ marker in a JPEG 2000 image, which allows remote attackers to cause a denial of service (out-of-bounds heap-memory access) or possibly have unspecified other impact via a crafted image with two or more of these markers.

  • NONE

CWE-119 - Buffer Overflow

Buffer overflow attacks involve data transit and operations exceeding the restricted memory buffer, thereby corrupting or overwriting data in adjacent memory locations. Such overflow allows the attacker to run arbitrary code or manipulate the existing code to cause privilege escalation, data breach, denial of service, system crash and even complete system compromise. Given that languages such as C and C++ lack default safeguards against overwriting or accessing data in their memory, applications utilizing these languages are most susceptible to buffer overflows attacks.

Advisory Timeline

  • Published