1. Ubuntu Security Notices
  2. USN-5412-1

USN-5412-1: curl vulnerabilities

Publication date

11 May 2022

Overview

Several security issues were fixed in curl.

Releases

Packages

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

Details

Axel Chong discovered that curl incorrectly handled percent-encoded URL
separators. A remote attacker could possibly use this issue to trick curl
into using the wrong URL and bypass certain checks or filters. This issue
only affected Ubuntu 22.04 LTS. (CVE-2022-27780)

Florian Kohnhuser discovered that curl incorrectly handled returning a
TLS server’s certificate chain details. A remote attacker could possibly
use this issue to cause curl to stop responding, resulting in a denial of
service. (CVE-2022-27781)

Harry Sintonen discovered that curl incorrectly reused a previous
connection when certain options had been changed, contrary to expectations.
(CVE-2022-27782)

Axel Chong discovered that curl incorrectly handled percent-encoded URL
separators. A remote attacker could possibly use this issue to trick curl
into using the wrong URL and bypass certain checks or filters. This issue
only affected Ubuntu 22.04 LTS. (CVE-2022-27780)

Florian Kohnhuser discovered that curl incorrectly handled returning a
TLS server’s certificate chain details. A remote attacker could possibly
use this issue to cause curl to stop responding, resulting in a denial of
service. (CVE-2022-27781)

Harry Sintonen discovered that curl incorrectly reused a previous
connection when certain options had been changed, contrary to expectations.
(CVE-2022-27782)

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
22.04 jammy libcurl3-gnutls –  7.81.0-1ubuntu1.2
libcurl3-nss –  7.81.0-1ubuntu1.2
libcurl4 –  7.81.0-1ubuntu1.2
curl –  7.81.0-1ubuntu1.2
21.10 impish libcurl3-gnutls –  7.74.0-1.3ubuntu2.2
libcurl3-nss –  7.74.0-1.3ubuntu2.2
libcurl4 –  7.74.0-1.3ubuntu2.2
curl –  7.74.0-1.3ubuntu2.2
20.04 focal libcurl3-gnutls –  7.68.0-1ubuntu2.11
libcurl3-nss –  7.68.0-1ubuntu2.11
libcurl4 –  7.68.0-1ubuntu2.11
curl –  7.68.0-1ubuntu2.11
18.04 bionic libcurl3-gnutls –  7.58.0-2ubuntu3.18
libcurl3-nss –  7.58.0-2ubuntu3.18
libcurl4 –  7.58.0-2ubuntu3.18
curl –  7.58.0-2ubuntu3.18

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References

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