DEBIAN-CVE-2026-43970
- Source
- https://security-tracker.debian.org/tracker/CVE-2026-43970
- Import Source
- https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-43970.json
- JSON Data
- https://api.osv.dev/v1/vulns/DEBIAN-CVE-2026-43970
- Upstream
- Published
- 2026-05-13T19:17:25Z
- Modified
- 2026-09-14T17:03:13Z
- Severity
-
- 8.2 (High) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X CVSS Calculator
- Summary
- [none]
- Details
-
Improper Handling of Highly Compressed Data (Data Amplification) vulnerability in ninenines cowlib allows unauthenticated remote denial of service via memory exhaustion. cow_spdy:inflate/2 in cowlib passes peer-supplied compressed bytes directly to zlib:inflate/2 with no output size bound. The SPDY header compression dictionary (?ZDICT) is public, and zlib compresses long runs of repeated bytes at roughly 1024:1, so a few kilobytes of SPDY frame payload can decompress to gigabytes on the BEAM heap, OOM-killing the node. A single unauthenticated SPDY frame is sufficient to trigger the condition. The parsers for syn_stream, syn_reply, and headers frame types are all affected via cow_spdy:parse_headers/2. This issue affects cowlib from 0.1.0 before 2.16.1.
- References
Affected packages
Debian:12 / erlang-cowlib
Package
- Name
- erlang-cowlib
- Purl
- pkg:deb/debian/erlang-cowlib?arch=source&distro=bookworm
Debian:13 / erlang-cowlib
Package
- Name
- erlang-cowlib
- Purl
- pkg:deb/debian/erlang-cowlib?arch=source&distro=trixie
Debian:14 / erlang-cowlib
Package
- Name
- erlang-cowlib
- Purl
- pkg:deb/debian/erlang-cowlib?arch=source&distro=forky