1. Ubuntu Security Notices
  2. USN-4665-2

USN-4665-2: curl vulnerabilities

Publication date

9 December 2020

Overview

Several security issues were fixed in curl.

Releases

Packages

  • curl - HTTP, HTTPS, and FTP client and client libraries

Details

USN-4665-1 fixed several vulnerabilities in curl. This update provides
the corresponding update for Ubuntu 12.04 ESM and Ubuntu 14.04 ESM.

Original advisory details:

Varnavas Papaioannou discovered that curl incorrectly handled FTP PASV
responses. An attacker could possibly use this issue to trick curl into
connecting to an arbitrary IP address and be used to perform port scanner
and other information gathering. (CVE-2020-8284)

It was discovered that curl incorrectly handled FTP wildcard matchins. A
remote attacker could possibly use this issue to cause curl to consume
resources and crash, resulting in a denial of service. (CVE-2020-8285)

USN-4665-1 fixed several vulnerabilities in curl. This update provides
the corresponding update for Ubuntu 12.04 ESM and Ubuntu 14.04 ESM.

Original advisory details:

Varnavas Papaioannou discovered that curl incorrectly handled FTP PASV
responses. An attacker could possibly use this issue to trick curl into
connecting to an arbitrary IP address and be used to perform port scanner
and other information gathering. (CVE-2020-8284)

It was discovered that curl incorrectly handled FTP wildcard matchins. A
remote attacker could possibly use this issue to cause curl to consume
resources and crash, resulting in a denial of service. (CVE-2020-8285)

Update instructions

In general, a standard system update will make all the necessary changes.

Learn more about how to get the fixes.

The problem can be corrected by updating your system to the following package versions:

Ubuntu Release Package Version
14.04 trusty libcurl3-gnutls –  7.35.0-1ubuntu2.20+esm6
libcurl3-nss –  7.35.0-1ubuntu2.20+esm6
libcurl3 –  7.35.0-1ubuntu2.20+esm6
curl –  7.35.0-1ubuntu2.20+esm6
12.04 precise libcurl3-gnutls –  7.22.0-3ubuntu4.29
libcurl3-nss –  7.22.0-3ubuntu4.29
libcurl3 –  7.22.0-3ubuntu4.29
curl –  7.22.0-3ubuntu4.29

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References

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