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Fencer Vulns
medium 5.3

CVE-2023-28322 json

An information disclosure vulnerability exists in curl <v8.1.0 when doing HTTP(S) transfers, libcurl might erroneously use the read callbac…

published 2023-05-26 3 y ago modified 2026-10-23 16 d ago also EUVD-2023-32029 , JLSEC-2026-410

cvss
5.3
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
2.2%
EPSS 2.2% chance of exploitation in 30 days, percentile 82%
public exploits
0
none known

Summary

An information disclosure vulnerability exists in curl <v8.1.0 when doing HTTP(S) transfers, libcurl might erroneously use the read callback (`CURLOPT_READFUNCTION`) to ask for data to send, even when the `CURLOPT_POSTFIELDS` option has been set, if the same handle previously wasused to issue a `PUT` request which used that callback. This flaw may surprise the application and cause it to misbehave and either send off the wrong data or use memory after free or similar in the second transfer. The problem exists in the logic for a reused handle when it is (expected to be) changed from a PUT to a POST.

Patch / fix

  • julia CURL_jll 8.5.0+0
  • julia LibCURL_jll 8.2.1+0
  • haxx curl 8.1.0
  • apple macos 11.7.9, 12.6.8, 13.5
  • curl Debian 14, Debian 13, Debian 12 7.88.1-10

debian advisories DEBIAN-CVE-2023-28322

  • curl Ubuntu 20.04 LTS 7.68.0-1ubuntu2.19
  • curl Ubuntu 22.04 LTS 7.81.0-1ubuntu1.11
  • curl Ubuntu Pro 14.04 LTS 7.35.0-1ubuntu2.20+esm16
  • curl Ubuntu Pro 16.04 LTS 7.47.0-1ubuntu2.19+esm9
  • curl Ubuntu Pro 18.04 LTS 7.58.0-2ubuntu3.24+esm1

ubuntu advisories UBUNTU-CVE-2023-28322

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-apr jboss core services 1 1.7.0-8.el7jbcs
  • jbcs-httpd24-apr jboss core services 1 1.7.0-8.el8jbcs
  • jbcs-httpd24-curl jboss core services 1 8.2.1-1.el7jbcs
  • jbcs-httpd24-curl jboss core services 1 8.2.1-1.el8jbcs
  • jbcs-httpd24-httpd jboss core services 1 2.4.57-5.el7jbcs
  • jbcs-httpd24-httpd jboss core services 1 2.4.57-5.el8jbcs
  • jbcs-httpd24-libcurl jboss core services 1 8.2.1-1.el7jbcs
  • jbcs-httpd24-libcurl jboss core services 1 8.2.1-1.el8jbcs

red hat advisories RHSA-2024:0428RHSA-2023:4629RHSA-2024:1601RHSA-2024:0585RHSA-2023:5598RHSA-2023:4354

  • curl SLE Module for Basesystem 15 SP4, SLE Micro 5.4, SLE Micro 5.3 +3 more 8.0.1-150400.5.23.1
  • curl SLES 12 SP2-BCL 7.37.0-37.98.1
  • curl SLES for SAP 12 SP4, SLES 12 SP4-LTSS, SLES 12 SP4-ESPOS +2 more 7.60.0-4.56.1
  • curl SLES for SAP 15 SP3, SLES for SAP 15 SP2, SLES 15 SP3-LTSS +11 more 7.66.0-150200.4.57.1
  • curl SLES for SAP 15 SP1, SLES 15 SP1-LTSS, SLE High Performance Computing 15 SP1-LTSS +1 more 7.60.0-150000.51.1
  • curl SLES for SAP 12 SP5, SLES 12 SP5, SLE Software Development Kit 12 SP5 8.0.1-11.65.2

suse advisories SUSE-SU-2023:2224-2SUSE-SU-2023:2230-1SUSE-SU-2023:2228-1SUSE-SU-2023:2227-1SUSE-SU-2023:2226-1SUSE-SU-2023:2225-1

  • curl openSUSE Tumbleweed 8.1.0-1.1

opensuse advisories openSUSE-SU-2024:12940-1

  • curl AlmaLinux 8 7.61.1-33.el8_9.5
  • libcurl AlmaLinux 8 7.61.1-33.el8_9.5
  • libcurl-minimal AlmaLinux 8 7.61.1-33.el8_9.5
  • curl AlmaLinux 9 7.76.1-23.el9_2.2
  • libcurl AlmaLinux 9 7.76.1-23.el9_2.2
  • curl-minimal AlmaLinux 9 7.76.1-23.el9_2.2
  • libcurl-minimal AlmaLinux 9 7.76.1-23.el9_2.2

almalinux advisories ALSA-2024:1601ALSA-2023:4354

  • curl Rocky Linux 8 7.61.1-33.el8_9.5

rocky linux advisories RLSA-2024:1601

  • curl Alpine 3.24, Alpine 3.23, Alpine 3.22 +7 more 8.1.0-r0

alpine advisories ALPINE-CVE-2023-28322

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

  • cmake CBL-Mariner 2.0 3.21.4-6
  • curl CBL-Mariner 2.0 8.0.1-2
  • cmake Azure Linux 3.0 3.21.4-10
  • tensorflow Azure Linux 3.0 2.16.1-1

azure linux advisories AZL-26791AZL-26792AZL-34600AZL-38070

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

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-2023-28322 updated cvss 3.7

curl: more POST-after-PUT confusion

  • Red Hat .NET Core 3.1 on Red Hat Enterprise Linux rh-dotnet31-curl, rh-dotnet31-libcurl Red Hat Enterprise Linux 6 curl, libcurl
    affected: no fix planned “Out of support scope”
  • Red Hat Enterprise Linux 7 curl, libcurl
    affected: no fix available “Fix deferred”
  • Red Hat Enterprise Linux AppStream (v. 9) libcurl-devel 7.76.1-23.el9_2.2, curl-debuginfo 7.76.1-23.el9_2.2, curl-debugsource 7.76.1-23.el9_2.2, libcurl-debuginfo 7.76.1-23.el9_2.2, curl-minimal-debuginfo 7.76.1-23.el9_2.2, libcurl-minimal-debuginfo 7.76.1-23.el9_2.2
    fixed: vendor fix RHSA-2023:4354
  • Red Hat Enterprise Linux AppStream EUS (v.9.0) libcurl-devel 7.76.1-14.el9_0.7, curl-debuginfo 7.76.1-14.el9_0.7, curl-debugsource 7.76.1-14.el9_0.7, libcurl-debuginfo 7.76.1-14.el9_0.7, curl-minimal-debuginfo 7.76.1-14.el9_0.7, libcurl-minimal-debuginfo 7.76.1-14.el9_0.7
    fixed: vendor fix RHSA-2023:5598
  • Red Hat Enterprise Linux BaseOS (v. 8) curl 7.61.1-33.el8_9.5, libcurl 7.61.1-33.el8_9.5, libcurl-minimal 7.61.1-33.el8_9.5
    fixed: vendor fix RHSA-2024:1601
  • Red Hat Enterprise Linux BaseOS (v. 9) curl 7.76.1-23.el9_2.2, libcurl 7.76.1-23.el9_2.2, curl-minimal 7.76.1-23.el9_2.2, libcurl-minimal 7.76.1-23.el9_2.2
    fixed: vendor fix RHSA-2023:4354
  • Red Hat Enterprise Linux BaseOS EUS (v.8.6) curl 7.61.1-22.el8_6.12, libcurl 7.61.1-22.el8_6.12, libcurl-minimal 7.61.1-22.el8_6.12
    fixed: vendor fix RHSA-2024:0428
  • Red Hat Enterprise Linux BaseOS EUS (v.8.8) curl 7.61.1-30.el8_8.9, libcurl 7.61.1-30.el8_8.9, libcurl-minimal 7.61.1-30.el8_8.9
    fixed: vendor fix RHSA-2024:0585
show 6 more
  • Red Hat Enterprise Linux BaseOS EUS (v.9.0) curl 7.76.1-14.el9_0.7, libcurl 7.76.1-14.el9_0.7, curl-minimal 7.76.1-14.el9_0.7, libcurl-minimal 7.76.1-14.el9_0.7
    fixed: vendor fix RHSA-2023:5598
  • Red Hat JBoss Core Services 2.4.57
    fixed: vendor fix RHSA-2023:4628
  • Red Hat JBoss Core Services on RHEL 7 Server jbcs-httpd24-curl 8.2.1-1.el7jbcs, jbcs-httpd24-libcurl 8.2.1-1.el7jbcs Red Hat JBoss Core Services on RHEL 8 jbcs-httpd24-curl 8.2.1-1.el8jbcs, jbcs-httpd24-libcurl 8.2.1-1.el8jbcs
    fixed: vendor fix RHSA-2023:4629
  • Red Hat RHOL 5.6 for RHEL 8 openshift-logging/kibana6-rhel8 v6.8.1-430, openshift-logging/vector-rhel8 v0.21.0-127, openshift-logging/fluentd-rhel8 v1.14.6-216, openshift-logging/eventrouter-rhel8 v0.4.0-246, openshift-logging/logging-loki-rhel8 v2.9.6-16, openshift-logging/loki-rhel8-operator v5.6.18-12, +12 more
    fixed: vendor fix RHSA-2024:2092
  • Red Hat RHOL 5.7 for RHEL 8 openshift-logging/vector-rhel8 v0.28.1-57, openshift-logging/kibana6-rhel8 v6.8.1-431, openshift-logging/fluentd-rhel8 v1.14.6-215, openshift-logging/eventrouter-rhel8 v0.4.0-248, openshift-logging/logging-loki-rhel8 v2.9.6-15, openshift-logging/loki-rhel8-operator v5.7.13-12, +12 more
    fixed: vendor fix RHSA-2024:2093
  • Red Hat JBoss Core Services on RHEL 7 Server jbcs-httpd24-apr 1.7.0-8.el7jbcs, jbcs-httpd24-httpd 2.4.57-5.el7jbcs, jbcs-httpd24-mod_md 2.4.0-25.el7jbcs, jbcs-httpd24-mod_ssl 2.4.57-5.el7jbcs, jbcs-httpd24-mod_ldap 2.4.57-5.el7jbcs, jbcs-httpd24-apr-util 1.6.1-102.el7jbcs, +17 more Red Hat JBoss Core Services on RHEL 8 jbcs-httpd24-apr 1.7.0-8.el8jbcs, jbcs-httpd24-httpd 2.4.57-5.el8jbcs, jbcs-httpd24-mod_md 2.4.0-25.el8jbcs, jbcs-httpd24-mod_ssl 2.4.57-5.el8jbcs, jbcs-httpd24-mod_ldap 2.4.57-5.el8jbcs, jbcs-httpd24-apr-util 1.6.1-102.el8jbcs, +17 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 SSVC

Exploitation
Proof of concept is public
Automatable
yes
Technical impact
partial
Assessed
8 mo ago

Exploit prediction

2.21% chance of exploitation in the next 30 days, higher than 82% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • hackerone.com https://hackerone.com/reports/1954658 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CISA ADP 3.1 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
NVD 3.1 3.7 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N
CNA 3.1 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
OSV 3.1 3.7 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N

Affected packages

ecosystem package affected fixed in
julia CURL_jll
<8.5.0+0
8.5.0+0
julia LibCURL_jll
<8.2.1+0
8.2.1+0

Affected products

  • n/a https://github.com/curl/curl

Classification

Weakness
  • CWE-200 Exposure of Sensitive Information to an Unauthorized Actor

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.