What’s Vulnerable › Vulnerabilities

CVE-2020-8231

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 5.3% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2020-12-14 · updated 2026-10-14
• Weakness: CWE-416

Description

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

Affected products

• Debian Linux: 10.0
• curl: from 7.29.0 through 7.71.1
• Oracle Communications Cloud Native Core Policy: 1.14.0
• Siemens Sinec Infrastructure Network Services: before 1.0.1.1 — fixed in 1.0.1.1
• Splunk Universal Forwarder: from 8.2.0 before 8.2.12; from 9.0.0 before 9.0.6; 9.1.0 — fixed in 8.2.12, 9.0.6

How to fix

Upgrade to a fixed version: Siemens Sinec Infrastructure Network Services 1.0.1.1; Splunk Universal Forwarder 8.2.12, 9.0.6. Check the vendor advisory for mitigations.

References

• https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdf
• https://curl.haxx.se/docs/CVE-2020-8231.html
• https://hackerone.com/reports/948876
• https://lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b%40%3Cissues.bookkeeper.apache.org%3E
• https://lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a450893651e4%40%3Cissues.bookkeeper.apache.org%3E
• https://security.gentoo.org/glsa/202012-14
• https://www.debian.org/security/2021/dsa-4881
• https://www.oracle.com/security-alerts/cpuapr2022.html
• https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdf
• https://curl.haxx.se/docs/CVE-2020-8231.html
• https://hackerone.com/reports/948876
• https://lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b%40%3Cissues.bookkeeper.apache.org%3E

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