CVE-2022-37434
Out-of-bounds Write — is CVE-2022-37434real, exploitable, or a false positive? Here's the community ground truth.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
zlib through 1.2.12 has a heap-based buffer over-read or buffer overflow in inflate in inflate.c via a large gzip header extra field. NOTE: only applications that call inflateGetHeader are affected. Some common applications bundle the affected zlib source code but may be unable to call inflateGetHeader (e.g., see the nodejs/node reference).
References
Published
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Community ground truth
Community verdict
3 verdictsIncludes TruePositive's curated baseline from public sources — community verdicts accrue on top.
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Practitioners rate this lower than its CVSS — likely over-rated by the score.
Field notes & remediation
Verdicts are the quick signal — notes are the evidence and fixes behind them.
- 0
Heap buffer over-read in
inflate()— but only reachable when the app callsinflateGetHeader()and processes a gzip stream with an oversized headerextrafield. The vast majority of zlib consumers decompress without ever touchinginflateGetHeader, so the path is dead for them even though scanners flag every pre-1.2.13 zlib. Genuinely real for the narrow set who parse gzip headers.Sources: NVD · zlib fix eff308a.
- 0
Update zlib to 1.2.13+ (cheap — just do it). Prioritize only if you actually use
inflateGetHeader()with a custom extra-field buffer; otherwise treat it as a low-urgency hygiene bump.
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