What is CVE-2020-8231?

CVE-2020-8231 is a high-severity software vulnerability (Use-after-free) with a CVSS score of 7.5. Due to use of a dangling pointer, libcurl 7.29.0 through 7.71.1 can use the wrong connection when sending data.

Is CVE-2020-8231 being actively exploited?

It is not currently in CISA's KEV catalog. Its EPSS exploitation probability is 5%.

What products does CVE-2020-8231 affect?

Tracked products affected include Debian. Check the version you run to see whether it is affected.

How do I fix CVE-2020-8231?

Apply the vendor fix promptly. An official patch or advisory is available. Upgrade affected products to a fixed version.

← All products

CVE-2020-8231

HIGH severity · CVSS 7.5 · Use-after-free

7.5CVSS HIGH

Summary

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

Impact & exploitability

Attack vectorNetwork

Attack complexityLow

Privileges requiredNone

User interactionNone

Confidentiality impactHigh

Integrity impactNone

Availability impactNone

Exploit probability (EPSS)5%

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

Affected products we track (1)

Debian

Recommendation

Apply the vendor fix promptly. Open any affected product above for its exact safe version.

Official patch: https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdf ↗

Additional information

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