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Fencer Vulns
medium 6.5

CVE-2022-32206 json

curl < 7.84.0 supports "chained" HTTP compression algorithms, meaning that a serverresponse can be compressed multiple times and potentiall…

published 2022-07-07 4 y ago modified 2026-10-14 25 d ago also EUVD-2022-53412 , JLSEC-2026-393

cvss
6.5
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
36.3%
EPSS 36.3% chance of exploitation in 30 days, percentile 98%
public exploits
0
none known

Summary

curl < 7.84.0 supports "chained" HTTP compression algorithms, meaning that a serverresponse can be compressed multiple times and potentially with different algorithms. The number of acceptable "links" in this "decompression chain" was unbounded, allowing a malicious server to insert a virtually unlimited number of compression steps.The use of such a decompression chain could result in a "malloc bomb", makingcurl end up spending enormous amounts of allocated heap memory, or trying toand returning out of memory errors.

Patch / fix

  • julia CURL_jll 8.5.0+0
  • julia LibCURL_jll 7.84.0+0
  • Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP V3.1.5
  • Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP V3.1.5
  • Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP V3.1.5
  • curl Debian 14, Debian 13, Debian 12 7.84.0-1

debian advisories DEBIAN-CVE-2022-32206

  • curl Ubuntu 18.04 LTS 7.58.0-2ubuntu3.19
  • curl Ubuntu 20.04 LTS 7.68.0-1ubuntu2.12
  • curl Ubuntu 22.04 LTS 7.81.0-1ubuntu1.3

ubuntu advisories UBUNTU-CVE-2022-32206

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • jbcs-httpd24-curl jboss core services 1 7.86.0-2.el7jbcs
  • jbcs-httpd24-curl jboss core services 1 7.86.0-2.el8jbcs
  • jbcs-httpd24-httpd jboss core services 1 2.4.51-37.el7jbcs
  • jbcs-httpd24-httpd jboss core services 1 2.4.51-37.el8jbcs
  • jbcs-httpd24-libcurl jboss core services 1 7.86.0-2.el7jbcs
  • jbcs-httpd24-libcurl jboss core services 1 7.86.0-2.el8jbcs
  • jbcs-httpd24-mod_ssl jboss core services 1 1:2.4.51-37.el7jbcs
  • jbcs-httpd24-mod_ssl jboss core services 1 1:2.4.51-37.el8jbcs

red hat advisories RHSA-2022:8840RHSA-2023:3460RHSA-2022:6157RHSA-2022:6159

  • curl SLES for SAP 15 SP1, SLES for SAP 15, SLES 15-LTSS +7 more 7.60.0-150000.33.1
  • curl SLES for SAP 12 SP4, SLES 12 SP4-LTSS, OpenStack Cloud Crowbar 9 +1 more 7.60.0-4.38.1
  • curl SLES 15 SP2-BCL, SLE Module for Basesystem 15 SP3, SLE Micro 5.2 +11 more 7.66.0-150200.4.36.1
  • curl SLE Module for Basesystem 15 SP4, openSUSE Leap 15.4 7.79.1-150400.5.3.1
  • curl SLES for SAP 12 SP5, SLES 12 SP5, SLE Software Development Kit 12 SP5 7.60.0-11.43.1

suse advisories SUSE-SU-2022:2829-1SUSE-SU-2022:2813-1SUSE-SU-2022:2327-2SUSE-SU-2022:2327-1SUSE-SU-2022:2305-1SUSE-SU-2022:2288-1

  • curl openSUSE Tumbleweed 7.84.0-1.1

opensuse advisories openSUSE-SU-2024:12214-1

  • curl AlmaLinux 9 7.76.1-14.el9_0.5
  • libcurl AlmaLinux 9 7.76.1-14.el9_0.5
  • curl-minimal AlmaLinux 9 7.76.1-14.el9_0.5
  • libcurl-minimal AlmaLinux 9 7.76.1-14.el9_0.5
  • curl AlmaLinux 8 7.61.1-22.el8_6.4
  • libcurl AlmaLinux 8 7.61.1-22.el8_6.4
  • libcurl-minimal AlmaLinux 8 7.61.1-22.el8_6.4

almalinux advisories ALSA-2022:6157ALSA-2022:6159

  • curl Rocky Linux 8 7.61.1-22.el8_6.4
  • curl Rocky Linux 9 7.76.1-14.el9_0.5

rocky linux advisories RLSA-2022:6159RLSA-2022:6157

  • curl Alpine 3.14, Alpine 3.13 7.79.1-r2
  • curl Alpine 3.15 7.80.0-r2
  • curl Alpine 3.16 7.83.1-r2
  • curl Alpine 3.24, Alpine 3.23, Alpine 3.22 +5 more 7.84.0-r0

alpine advisories ALPINE-CVE-2022-32206

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • curl CBL-Mariner 2.0 7.84.0-1

azure linux advisories AZL-10102

Azure Linux vulnerability data, Copyright (c) Microsoft Corporation, from https://github.com/microsoft/AzureLinuxVulnerabilityData via OSV, under the MIT licence; changed: normalised to fixed package versions per release. MIT

  • libcurl-compat Arch Linux 7.84.0-1
  • curl Arch Linux 7.84.0-1
  • libcurl-gnutls Arch Linux 7.84.0-1

arch linux advisories AVG-2817

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2022-32206 updated cvss 6.5

curl: HTTP compression denial of service

  • Red Hat .NET Core 3.1 on Red Hat Enterprise Linux rh-dotnet31-curl, rh-dotnet31-libcurl
    affected: no fix planned “Out of support scope”
  • Red Hat Software Collections httpd24-curl, httpd24-libcurl
    affected: no fix planned “Will not fix”
  • Red Hat Enterprise Linux AppStream (v. 9) libcurl-devel 7.76.1-14.el9_0.5, curl-debuginfo 7.76.1-14.el9_0.5, curl-debugsource 7.76.1-14.el9_0.5, libcurl-debuginfo 7.76.1-14.el9_0.5, curl-minimal-debuginfo 7.76.1-14.el9_0.5, libcurl-minimal-debuginfo 7.76.1-14.el9_0.5
    fixed: vendor fix RHSA-2022:6157
  • Red Hat Enterprise Linux BaseOS (v. 8) curl 7.61.1-22.el8_6.4, libcurl 7.61.1-22.el8_6.4, libcurl-minimal 7.61.1-22.el8_6.4
    fixed: vendor fix RHSA-2022:6159
  • Red Hat Enterprise Linux BaseOS (v. 9) curl 7.76.1-14.el9_0.5, libcurl 7.76.1-14.el9_0.5, curl-minimal 7.76.1-14.el9_0.5, libcurl-minimal 7.76.1-14.el9_0.5
    fixed: vendor fix RHSA-2022:6157
  • Red Hat Enterprise Linux BaseOS AUS (v.8.4) curl 7.61.1-18.el8_4.3, libcurl 7.61.1-18.el8_4.3, libcurl-minimal 7.61.1-18.el8_4.3 Red Hat Enterprise Linux BaseOS E4S (v.8.4) curl 7.61.1-18.el8_4.3, libcurl 7.61.1-18.el8_4.3, libcurl-minimal 7.61.1-18.el8_4.3 Red Hat Enterprise Linux BaseOS TUS (v.8.4) curl 7.61.1-18.el8_4.3, libcurl 7.61.1-18.el8_4.3, libcurl-minimal 7.61.1-18.el8_4.3
    fixed: vendor fix RHSA-2023:3460
  • Red Hat JBoss Core Services
    fixed: vendor fix RHSA-2022:8841
  • Red Hat JBoss Core Services on RHEL 7 Server jbcs-httpd24-curl 7.86.0-2.el7jbcs, jbcs-httpd24-libcurl 7.86.0-2.el7jbcs Red Hat JBoss Core Services on RHEL 8 jbcs-httpd24-curl 7.86.0-2.el8jbcs, jbcs-httpd24-libcurl 7.86.0-2.el8jbcs
    fixed: vendor fix RHSA-2022:8840
show 1 more
  • Red Hat Enterprise Linux 6 curl, libcurl Red Hat Enterprise Linux 7 curl, libcurl Red Hat JBoss Core Services on RHEL 7 Server jbcs-httpd24-httpd 2.4.51-37.el7jbcs, jbcs-httpd24-mod_md 2.4.0-18.el7jbcs, jbcs-httpd24-apr-util 1.6.1-99.el7jbcs, jbcs-httpd24-mod_ssl 2.4.51-37.el7jbcs, jbcs-httpd24-nghttp2 1.43.0-11.el7jbcs, jbcs-httpd24-openssl 1.1.1k-13.el7jbcs, +22 more Red Hat JBoss Core Services on RHEL 8 jbcs-httpd24-httpd 2.4.51-37.el8jbcs, jbcs-httpd24-mod_md 2.4.0-18.el8jbcs, jbcs-httpd24-apr-util 1.6.1-99.el8jbcs, jbcs-httpd24-mod_ssl 2.4.51-37.el8jbcs, jbcs-httpd24-nghttp2 1.43.0-11.el8jbcs, jbcs-httpd24-openssl 1.1.1k-13.el8jbcs, +22 more
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

cisa ICSA-23-348-10 updated cvss 6.5

Siemens SIMATIC S7-1500

  • Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AB0) >= 3.1.0, < 3.1.5 Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AC0) >= 3.1.0, < 3.1.5 Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AB0) >= 3.1.0, < 3.1.5 Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AC0) >= 3.1.0, < 3.1.5 Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP (6AG1518-4AX00-4AC0) >= 3.1.0, < 3.1.5
    affected: fixed in V3.1.5, mitigation support.industry.siemens.com

Facts from CISA's republication of the vendor's own advisory (CSAF); the linked advisory is the authoritative source. CISA notification · csaf

cisa ICSA-23-103-09 updated cvss 6.5

Siemens SCALANCE XCM332

Facts from CISA's republication of the vendor's own advisory (CSAF); the linked advisory is the authoritative source. CISA notification · csaf

cisa ICSA-23-166-12 updated cvss 6.5

Siemens SINAMICS Medium Voltage Products

  • Siemens SINAMICS PERFECT HARMONY GH180 6SR5
    affected: vendor fix, mitigation

Facts from CISA's republication of the vendor's own advisory (CSAF); the linked advisory is the authoritative source. CISA notification · csaf

cisa ICSA-23-075-01 updated cvss 6.5

Siemens SCALANCE, RUGGEDCOM Third-Party

  • Siemens RUGGEDCOM RM1224 LTE(4G) EU (6GK6108-4AM00-2BA2) <V7.2 Siemens RUGGEDCOM RM1224 LTE(4G) NAM (6GK6108-4AM00-2DA2) <V7.2 Siemens SCALANCE M804PB (6GK5804-0AP00-2AA2) <V7.2 Siemens SCALANCE M812-1 ADSL-Router (Annex A) (6GK5812-1AA00-2AA2) <V7.2 Siemens SCALANCE M812-1 ADSL-Router (Annex B) (6GK5812-1BA00-2AA2) <V7.2 Siemens SCALANCE M816-1 ADSL-Router (Annex A) (6GK5816-1AA00-2AA2) <V7.2
    +14 more products
    Siemens SCALANCE M816-1 ADSL-Router (Annex B) (6GK5816-1BA00-2AA2) <V7.2 Siemens SCALANCE M826-2 SHDSL-Router (6GK5826-2AB00-2AB2) <V7.2 Siemens SCALANCE M874-2 (6GK5874-2AA00-2AA2) <V7.2 Siemens SCALANCE M874-3 (6GK5874-3AA00-2AA2) <V7.2 Siemens SCALANCE M876-3 (EVDO) (6GK5876-3AA02-2BA2) <V7.2 Siemens SCALANCE M876-3 (ROK) (6GK5876-3AA02-2EA2) <V7.2 Siemens SCALANCE M876-4 (6GK5876-4AA10-2BA2) <V7.2 Siemens SCALANCE M876-4 (EU) (6GK5876-4AA00-2BA2) <V7.2 Siemens SCALANCE M876-4 (NAM) (6GK5876-4AA00-2DA2) <V7.2 Siemens SCALANCE MUM853-1 (EU) (6GK5853-2EA00-2DA1) <V7.2 Siemens SCALANCE MUM856-1 (EU) (6GK5856-2EA00-3DA1) <V7.2 Siemens SCALANCE MUM856-1 (RoW) (6GK5856-2EA00-3AA1) <V7.2 Siemens SCALANCE S615 (6GK5615-0AA00-2AA2) <V7.2 Siemens SCALANCE S615 EEC (6GK5615-0AA01-2AA2) <V7.2
    affected: fixed in V7.2 support.industry.siemens.com

Facts from CISA's republication of the vendor's own advisory (CSAF); the linked advisory is the authoritative source. CISA notification · csaf

cisa ICSA-22-349-18 updated cvss 6.5

Siemens SCALANCE SC-600 Family

  • Siemens SCALANCE SC622-2C (6GK5622-2GS00-2AC2) <V3.0 Siemens SCALANCE SC626-2C (6GK5626-2GS00-2AC2) <V3.0 Siemens SCALANCE SC632-2C (6GK5632-2GS00-2AC2) <V3.0 Siemens SCALANCE SC636-2C (6GK5636-2GS00-2AC2) <V3.0 Siemens SCALANCE SC642-2C (6GK5642-2GS00-2AC2) <V3.0 Siemens SCALANCE SC646-2C (6GK5646-2GS00-2AC2) <V3.0
    affected: fixed in V3.0 support.industry.siemens.com

Facts from CISA's republication of the vendor's own advisory (CSAF); the linked advisory is the authoritative source. CISA notification · csaf

CISA SSVC

Exploitation
Proof of concept is public
Automatable
no
Technical impact
partial
Assessed
18 mo ago

Exploit prediction

36.35% chance of exploitation in the next 30 days, higher than 98% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • hackerone.com https://hackerone.com/reports/1570651 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CISA ADP 3.1 6.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
NVD 3.1 6.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
CNA 3.1 6.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
NVD 2.0 4.3 AV:N/AC:M/Au:N/C:N/I:N/A:P
OSV 3.1 6.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Affected packages

ecosystem package affected fixed in
julia CURL_jll
<8.5.0+0
8.5.0+0
julia LibCURL_jll
<7.84.0+0
7.84.0+0

Affected products

  • n/a https://github.com/curl/curl
  • Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP
  • Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP
  • Siemens SINAMICS PERFECT HARMONY GH180
  • Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP

Classification

Weakness
  • CWE-770 Allocation of Resources Without Limits or Throttling

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.