CVE-2020-8231

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Summary

CVECVE-2020-8231
StatePUBLISHED
Assignerhackerone
Source PriorityCVE Program / NVD first with legacy fallback
Published2020-12-14 20:15:13 UTC
Updated2026-10-14 09:17:20 UTC
DescriptionDue to use of a dangling pointer, libcurl 7.29.0 through 7.71.1 can use the wrong connection when sending data.

Risk And Classification

Primary CVSS: v3.1 7.5 HIGH from [email protected]

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Problem Types: CWE-416 | CWE-416 Use After Free (CWE-416)

VersionSourceTypeScoreSeverityVector
3.1[email protected]Primary7.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
2.0[email protected]Primary5AV:N/AC:L/Au:N/C:P/I:N/A:N

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

CVSS v2.0 Breakdown

Access Vector
Network
Access Complexity
Low
Authentication
None
Confidentiality
Partial
Integrity
None
Availability
None

AV:N/AC:L/Au:N/C:P/I:N/A:N

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Debian Debian Linux 10.0 All All All
Application Haxx Libcurl All All All All
Application Oracle Communications Cloud Native Core Policy 1.14.0 All All All
Application Siemens Sinec Infrastructure Network Services All All All All
Application Splunk Universal Forwarder All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Na Https//github.com/curl/curl affected libcurl 7.29.0 to and including 7.71.1 Not specified
ADP Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP affected V3.1.0 V3.1.5 custom Not specified
ADP Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP affected V3.1.0 V3.1.5 custom Not specified
ADP Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP affected V3.1.0 V3.1.5 custom Not specified
ADP Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP affected V3.1.0 V3.1.5 custom Not specified
ADP Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP affected V3.1.0 V3.1.5 custom Not specified

References

ReferenceSourceLinkTags
cert-portal.siemens.com/productcert/html/ssa-398330.html 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e cert-portal.siemens.com
Oracle Critical Patch Update Advisory - April 2022 af854a3a-2127-422b-91ae-364da2661108 www.oracle.com Patch, Third Party Advisory
curl - wrong connect-only connection - CVE-2020-8231 af854a3a-2127-422b-91ae-364da2661108 curl.haxx.se Patch, Third Party Advisory
cURL: Multiple vulnerabilities (GLSA 202012-14) — Gentoo security af854a3a-2127-422b-91ae-364da2661108 security.gentoo.org Third Party Advisory
cert-portal.siemens.com/productcert/html/ssa-389290.html 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e cert-portal.siemens.com
lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e69... af854a3a-2127-422b-91ae-364da2661108 lists.apache.org Mailing List, Third Party Advisory
HackerOne af854a3a-2127-422b-91ae-364da2661108 hackerone.com Exploit, Issue Tracking, Patch, Third Party Advisory
lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a450... af854a3a-2127-422b-91ae-364da2661108 lists.apache.org Mailing List, Third Party Advisory
Debian -- Security Information -- DSA-4881-1 curl af854a3a-2127-422b-91ae-364da2661108 www.debian.org Third Party Advisory
cert-portal.siemens.com/productcert/pdf/ssa-389290.pdf af854a3a-2127-422b-91ae-364da2661108 cert-portal.siemens.com Patch, Third Party Advisory
Pony Mail! MITRE lists.apache.org
Pony Mail! MITRE lists.apache.org
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Legacy QID Mappings

  • 12304 McAfee Web Gateway Product Multiple Vulnerabilities (WP-2326,WP-3443)
  • 159196 Oracle Enterprise Linux Security Update for curl (ELSA-2021-1610)
  • 178522 Debian Security Update for curl (DSA 4881-1)
  • 239328 Red Hat Update for curl (RHSA-2021:1610)
  • 296067 Oracle Solaris 11.4 Support Repository Update (SRU) 33.94.0 Missing (CPUAPR2021)
  • 352506 Amazon Linux Security Advisory for curl: ALAS2-2021-1693
  • 377396 Alibaba Cloud Linux Security Update for curl (ALINUX3-SA-2021:0078)
  • 378599 Splunk Enterprise Third Party Package Updates for June (SVD-2023-0613)
  • 378883 Splunk Enterprise August Third Party Package Updates (SVD-2023-0808)
  • 500131 Alpine Linux Security Update for curl
  • 501395 Alpine Linux Security Update for curl
  • 503887 Alpine Linux Security Update for curl
  • 591406 Siemens SIMATIC S7-1500 CPU GNU/Linux subsystem Multiple Vulnerabilities (SSB-439005, ICSA-22-104-13)
  • 690517 Free Berkeley Software Distribution (FreeBSD) Security Update for curl (b905dff4-e227-11ea-b0ea-08002728f74c)
  • 750055 SUSE Enterprise Linux Security Update for curl (SUSE-SU-2021:1786-1)
  • 900151 CBL-Mariner Linux Security Update for curl 7.68.0
  • 903203 Common Base Linux Mariner (CBL-Mariner) Security Update for curl (3679)
  • 940000 AlmaLinux Security Update for curl (ALSA-2021:1610)
  • 960740 Rocky Linux Security Update for curl (RLSA-2021:1610)

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