AETERNAE AI RESEARCH LLC INDEPENDENT RESEARCH
ÆAETERNAERESEARCH
Sign inRequest access
← Malware catalog

Attributed metadata history

REPORTPUBLIC METADATA

ELB Cache mechanism HTTP header smuggling

While testing rate-limiter protection, The researcher noticed that when forcing HTTP/1 requests and injecting a space after `X-Forwarded-For` he was able to override this specific header, letting him impersonate any IP. Any internal header could have beem overridden, also the one that should not be exposed/forwarded by the client, such as `CloudFront-Viewer-Country-Region` or any other `CloudFront` enhanced header. This special security issue was affecting all AWS users with that a specific setting enabled.

Reference details

Source category
research-report
First reported
May 17, 2022 00:00 UTC
Last reported
May 17, 2022 00:00 UTC
Catalog updated
Oct 15, 2026 16:51 UTC
Record ID
787d703cb4c924d609acf38dc19c40054a39c2776b2ce6378fde84ff400d360a

Published indicators

Network indicators are visibly defanged. This page does not make them clickable or send them to another service.

No validated file hashes or network indicators are stored for this record.

Source observations

intelligence_src_d11443da85ea659d49

Source-provided label
Publisher RSS metadata
Evidence class
mentioned in report
Confidence
Not reported
Observed
May 17, 2022 00:00 UTC
Retrieved
Oct 15, 2026 16:51 UTC

This record contains metadata and attribution only. It does not host, download, unpack, render, or execute malware samples.

Feed collection status

Sources represented on this page. Publication and observation dates describe the content; successful batch dates describe local collection. A recent batch does not certify complete coverage or current provider availability.

1 sources: 0 stale, 0 needing attention, 0 paused, 0 unverified.

Review source update dates and status
  • intelligence_src_d11443da85ea659d49Recent successful batchLast successful batch: Last attempt:

Stale means older than twice the recorded collection interval, with a minimum of one hour; without an interval, the threshold is 24 hours. Cached content remains available while a feed is stale, paused, or unverified.