CVE-2022-35086

What it actually does

The flaw triggers a segmentation violation during an unaligned memmove operation in the vectorized memory copy routine, resulting in an application crash.

Why it matters to the business

Processing of certain input files becomes unreliable, causing workflow interruptions and potential loss of productivity for users relying on the affected tools.

How an attack unfolds

An attacker supplies a crafted input file that reaches the vulnerable memory-copy path; when the tool processes the file the unaligned access triggers the segmentation fault.

How to fix it

Rebuild from a commit after 772e55a2 or apply a vendor patch that corrects the unaligned memory access; avoid processing untrusted files with the affected version until updated.

How to confirm the fix worked

Re-run the tool against the previously crashing test case and confirm absence of segmentation faults; verify the updated binary no longer references the faulty memmove-vec-unaligned-erms path.

Typical attack path

1. Obtain or generate a malicious input file that exercises the affected memmove path
2. Invoke the vulnerable SWFTools binary with the crafted file as argument
3. Observe the resulting segmentation fault and application termination

How to detect it

Inspect system and application logs for segmentation fault entries or core dumps generated by swftools binaries; correlate crashes with file-processing activity.

What your security team should do

• Prioritize upgrade of SWFTools to a fixed build
• Restrict execution of affected binaries to trusted inputs only
• Monitor upstream commits for the memory-corruption fix and schedule deployment