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Fencer Vulns
high 7.5

CVE-2022-27782 json

libcurl would reuse a previously created connection even when a TLS or SSHrelated option had been changed that should have prohibited reuse…

published 2022-06-01 4 y ago modified 2026-10-14 25 d ago also EUVD-2022-32277 , JLSEC-2026-391

cvss
7.5
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
3.1%
EPSS 3.1% chance of exploitation in 30 days, percentile 87%
public exploits
0
none known

Summary

libcurl would reuse a previously created connection even when a TLS or SSHrelated option had been changed that should have prohibited reuse.libcurl keeps previously used connections in a connection pool for subsequenttransfers to reuse if one of them matches the setup. However, several TLS andSSH settings were left out from the configuration match checks, making themmatch too easily.

Patch / fix

  • julia CURL_jll 8.5.0+0
  • julia LibCURL_jll 7.83.1+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 7.83.1-1

debian advisories DEBIAN-CVE-2022-27782

  • curl Ubuntu 18.04 LTS 7.58.0-2ubuntu3.18
  • curl Ubuntu 20.04 LTS 7.68.0-1ubuntu2.11
  • curl Ubuntu 22.04 LTS 7.81.0-1ubuntu1.2

ubuntu advisories UBUNTU-CVE-2022-27782

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

  • curl RHEL 9 7.76.1-14.el9_0.4
  • libcurl RHEL 9 7.76.1-14.el9_0.4
  • curl-minimal RHEL 9 7.76.1-14.el9_0.4
  • libcurl-minimal RHEL 9 7.76.1-14.el9_0.4
  • curl RHEL 8 7.61.1-22.el8_6.3
  • libcurl RHEL 8 7.61.1-22.el8_6.3
  • libcurl-minimal RHEL 8 7.61.1-22.el8_6.3

red hat advisories RHSA-2022:5245RHSA-2022:5313

  • 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 for SAP 15 SP2, SLES 15 SP2-LTSS, SLES 15 SP2-BCL +10 more 7.66.0-150200.4.33.1
  • curl SLES for SAP 12 SP5, SLES 12 SP5, SLE Software Development Kit 12 SP5 7.60.0-11.40.2
  • curl SLES for SAP 12 SP3, SLES 12 SP3-LTSS, SLES 12 SP3-BCL +4 more 7.37.0-37.76.1

suse advisories SUSE-SU-2022:2829-1SUSE-SU-2022:2813-1SUSE-SU-2022:1870-1SUSE-SU-2022:1805-1SUSE-SU-2022:1733-1

  • curl openSUSE Tumbleweed 7.83.1-1.1

opensuse advisories openSUSE-SU-2024:12062-1

  • curl AlmaLinux 8 7.61.1-22.el8_6.3
  • libcurl AlmaLinux 8 7.61.1-22.el8_6.3
  • libcurl-minimal AlmaLinux 8 7.61.1-22.el8_6.3

almalinux advisories ALSA-2022:5313

  • curl Rocky Linux 8 7.61.1-22.el8_6.3

rocky linux advisories RLSA-2022:5313

  • curl Alpine 3.14, Alpine 3.13 7.79.1-r2
  • curl Alpine 3.15 7.80.0-r2
  • curl Alpine 3.24, Alpine 3.23, Alpine 3.22 +6 more 7.83.1-r0

alpine advisories ALPINE-CVE-2022-27782

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 7.83.1-1

azure linux advisories AZL-9877

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

  • curl Arch Linux 7.83.1-1

arch linux advisories AVG-2706

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-2022-27782 updated cvss 7.5

curl: TLS and SSH connection too eager reuse

  • Red Hat .NET Core 3.1 on Red Hat Enterprise Linux rh-dotnet31-curl, rh-dotnet31-libcurl Red Hat Enterprise Linux 6 curl, libcurl Red Hat Enterprise Linux 7 curl, 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_0.4, curl-debuginfo 7.76.1-14.el9_0.4, curl-debugsource 7.76.1-14.el9_0.4, libcurl-debuginfo 7.76.1-14.el9_0.4, curl-minimal-debuginfo 7.76.1-14.el9_0.4, libcurl-minimal-debuginfo 7.76.1-14.el9_0.4
    fixed: vendor fix RHSA-2022:5245
  • Red Hat Enterprise Linux BaseOS (v. 8) curl 7.61.1-22.el8_6.3, libcurl 7.61.1-22.el8_6.3, libcurl-minimal 7.61.1-22.el8_6.3
    fixed: vendor fix RHSA-2022:5313
  • Red Hat Enterprise Linux BaseOS (v. 9) curl 7.76.1-14.el9_0.4, libcurl 7.76.1-14.el9_0.4, curl-minimal 7.76.1-14.el9_0.4, libcurl-minimal 7.76.1-14.el9_0.4
    fixed: vendor fix RHSA-2022:5245
  • Red Hat JBoss Core Services jbcs-httpd24-curl, jbcs-httpd24-libcurl
    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 7.5

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-23-194-01 updated cvss 7.5

Siemens RUGGEDCOM ROX

  • Siemens RUGGEDCOM ROX MX5000 <V2.16.0 Siemens RUGGEDCOM ROX MX5000RE <V2.16.0 Siemens RUGGEDCOM ROX RX1400 <V2.16.0 Siemens RUGGEDCOM ROX RX1500 <V2.16.0 Siemens RUGGEDCOM ROX RX1501 <V2.16.0 Siemens RUGGEDCOM ROX RX1510 <V2.16.0
    +5 more products
    Siemens RUGGEDCOM ROX RX1511 <V2.16.0 Siemens RUGGEDCOM ROX RX1512 <V2.16.0 Siemens RUGGEDCOM ROX RX1524 <V2.16.0 Siemens RUGGEDCOM ROX RX1536 <V2.16.0 Siemens RUGGEDCOM ROX RX5000 <V2.16.0
    affected: fixed in V2.16.0 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
yes
Technical impact
partial
Assessed
6 mo ago

Exploit prediction

3.09% chance of exploitation in the next 30 days, higher than 87% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • hackerone.com https://hackerone.com/reports/1555796 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CISA ADP 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
NVD 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
CNA 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
NVD 2.0 5.0 AV:N/AC:L/Au:N/C:N/I:P/A:N
OSV 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Affected packages

ecosystem package affected fixed in
julia CURL_jll
<8.5.0+0
8.5.0+0
julia LibCURL_jll
<7.83.1+0
7.83.1+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 SIPLUS S7-1500 CPU 1518-4 PN/DP MFP

Classification

Weakness
  • CWE-840 Business Logic Errors
  • CWE-295 Improper Certificate Validation

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.