Home/CVE/Due to use of a dangling pointer, libcurl 7.29.0 through 7.71.1 can use the wrong connection when sending data.
CVE

CVE-2020-8231

Due to use of a dangling pointer, libcurl 7.29.0 through 7.71.1 can use the wrong connection when sending data.

Due to use of a dangling pointer, libcurl 7.29.0 through 7.71.1 can use the wrong connection when sending data.

HIGH · CVSS 7.5 EPSS 0.00159
Act now
  • Public exploit or PoC is available
  • CVSS base score ≥ 7.0
Sigma rules1 YARA rules0
⬡

Weakness Classification

CWE-416Use After Free
CWE-416Use After Free
▤

Affected Products & Versions

7
haxx libcurl>= 7.29.0 and <= 7.71.1
siemens sinec infrastructure network services< 1.0.1.1
debian linuxall versions
oracle communications cloud native core policyall versions
splunk universal forwarder>= 8.2.0 and < 8.2.12
splunk universal forwarder>= 9.0.0 and < 9.0.6
splunk universal forwarderall versions
⚠

Public Exploits & PoCs

1
pochackerone.com · 948876hackerone.com
◈

Sigma Hunt Rules

1
Exact rules name this CVE ID. Product rules name an affected product in their title. Related rules cover techniques used by actors who exploited this CVE. Showing the most relevant matches; the complete related set is on the full drill-down.
productmediumPotential DLL Sideloading Of Libcurl.DLL Via GUP.EXE
▣

Scoring & Timeline

7.5
HIGH · CVSS v3.1 · support@hackerone.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD14 Dec 2020 · 08:15 PM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
⚑

Vendor Advisories

18
suse-csafopenSUSE-SU-2024:10582-1
siemens-csafSSA-398330
siemens-csafSSA-389290
suse-csafSUSE-SU-2021:1786-1
msrcCVE-2020-8231
🔗

References & Sources

7
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdfPatchThird Party Advisory
https://curl.haxx.se/docs/CVE-2020-8231.htmlPatchThird Party Advisory
https://lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b%40%3Cissues.bookkeeper.apache.org%3EMailing ListThird Party Advisory
https://lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a450893651e4%40%3Cissues.bookkeeper.apache.org%3EMailing ListThird Party Advisory
https://security.gentoo.org/glsa/202012-14Third Party Advisory
https://www.debian.org/security/2021/dsa-4881Third Party Advisory
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