1. Ubuntu Security Notices
  2. USN-5891-1

USN-5891-1: curl vulnerabilities

Publication date

27 February 2023

Overview

Several security issues were fixed in curl.

Releases

Packages

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

Details

Harry Sintonen discovered that curl incorrectly handled HSTS support
when multiple URLs are requested serially. A remote attacker could possibly
use this issue to cause curl to use unencrypted connections. This issue
only affected Ubuntu 22.04 LTS, and Ubuntu 22.10. (CVE-2023-23914)

Harry Sintonen discovered that curl incorrectly handled HSTS support
when multiple URLs are requested in parallel. A remote attacker could
possibly use this issue to cause curl to use unencrypted connections. This
issue only affected Ubuntu 22.04 LTS, and Ubuntu 22.10. (CVE-2023-23915)

Patrick Monnerat discovered that curl incorrectly handled memory when
processing requests with multi-header compression. A remote attacker could
possibly use this issue to cause curl to consume resources, leading to a
denial of service. (CVE-2023-23916)

Harry Sintonen discovered that curl incorrectly handled HSTS support
when multiple URLs are requested serially. A remote attacker could possibly
use this issue to cause curl to use unencrypted connections. This issue
only affected Ubuntu 22.04 LTS, and Ubuntu 22.10. (CVE-2023-23914)

Harry Sintonen discovered that curl incorrectly handled HSTS support
when multiple URLs are requested in parallel. A remote attacker could
possibly use this issue to cause curl to use unencrypted connections. This
issue only affected Ubuntu 22.04 LTS, and Ubuntu 22.10. (CVE-2023-23915)

Patrick Monnerat discovered that curl incorrectly handled memory when
processing requests with multi-header compression. A remote attacker could
possibly use this issue to cause curl to consume resources, leading to a
denial of service. (CVE-2023-23916)

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
22.10 kinetic libcurl3-gnutls –  7.85.0-1ubuntu0.3
libcurl3-nss –  7.85.0-1ubuntu0.3
libcurl4 –  7.85.0-1ubuntu0.3
curl –  7.85.0-1ubuntu0.3
22.04 jammy libcurl3-gnutls –  7.81.0-1ubuntu1.8
libcurl3-nss –  7.81.0-1ubuntu1.8
libcurl4 –  7.81.0-1ubuntu1.8
curl –  7.81.0-1ubuntu1.8
20.04 focal libcurl3-gnutls –  7.68.0-1ubuntu2.16
libcurl3-nss –  7.68.0-1ubuntu2.16
libcurl4 –  7.68.0-1ubuntu2.16
curl –  7.68.0-1ubuntu2.16
18.04 bionic libcurl3-gnutls –  7.58.0-2ubuntu3.23
libcurl3-nss –  7.58.0-2ubuntu3.23
libcurl4 –  7.58.0-2ubuntu3.23
curl –  7.58.0-2ubuntu3.23

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References

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