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CVE-2022-37434 is a heap-based buffer over-read and buffer-overflow vulnerability in zlib through version 1.2.12. The flaw resides in the inflate functionality in inflate.c when handling a gzip header with an excessively large extra field. It affects only applications that invoke inflateGetHeader; applications that bundle vulnerable zlib source but cannot invoke that function are not affected by this flaw.
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1 valid exploit after Mallory filtered fakes, detection scripts, and README-only repos (1 hidden).
This repository contains a proof-of-concept exploit for CVE-2022-37434, a vulnerability in zlib (through version 1.2.12) that can result in a heap-based buffer over-read or buffer overflow when processing gzip data with a large extra field. The exploit is implemented in a single Python script (poc.py), which constructs a specially crafted gzip payload and sends it via an HTTP POST request to a user-specified target IP address. The script requires the target to be running a service that uses a vulnerable zlib version and processes gzip-encoded HTTP requests using inflateGetHeader. The README is minimal and provides only a brief description. No hardcoded IPs or domains are present; the target is specified at runtime. The exploit is a denial-of-service (crash) PoC and does not provide a shell or code execution.
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21 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A critical heap-based buffer over-read or buffer-overflow vulnerability in zlib's inflate functionality when processing a large gzip header extra field. It affects zlib through version 1.2.12, specifically applications that invoke inflateGetHeader.
A critical network-reachable vulnerability tracked as CVE-2022-37434, assessed as requiring no privileges or user interaction and capable of high confidentiality, integrity, and availability impact.
A security vulnerability addressed by this container-image update; the content provides no technical details.
A vulnerability addressed by the updated Red Hat 3scale container images; no technical details are provided.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.