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Ubuntu Security Notice USN-4308-2

Ubuntu Security Notice USN-4308-2
Posted Mar 30, 2020
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 4308-2 - USN-4308-1 fixed several vulnerabilities in Twisted. This update provides the corresponding update for Ubuntu 14.04 ESM. it was discovered that Twisted incorrectly validated or sanitized certain URIs or HTTP methods. A remote attacker could use this issue to inject invalid characters and possibly perform header injection attacks. Various other issues were also addressed.

tags | advisory, remote, web, vulnerability
systems | linux, ubuntu
advisories | CVE-2019-12387, CVE-2019-12855, CVE-2020-10109
SHA-256 | 39bb858ec4921004263891b18b84c7e30cbaece7168ad65d0909bacbbf72c14e

Ubuntu Security Notice USN-4308-2

Change Mirror Download
=========================================================================
Ubuntu Security Notice USN-4308-2
March 30, 2020

twisted vulnerabilities
=========================================================================
A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 14.04 ESM

Summary:

Several security issues were fixed in Twisted.

Software Description:
- twisted: Event-based framework for internet applications

Details:

USN-4308-1 fixed several vulnerabilities in Twisted. This update provides
the corresponding update for Ubuntu 14.04 ESM.

Original advisory details:

it was discovered that Twisted incorrectly validated or sanitized certain
URIs or HTTP methods. A remote attacker could use this issue to inject
invalid characters and possibly perform header injection attacks.
(CVE-2019-12387)

It was discovered that Twisted incorrectly verified XMPP TLS certificates.
A remote attacker could possibly use this issue to perform a
man-in-the-middle attack and obtain sensitive information. (CVE-2019-12855)

Jake Miller and ZeddYu Lu discovered that Twisted incorrectly handled
certain content-length headers. A remote attacker could possibly use this
issue to perform HTTP request splitting attacks. (CVE-2020-10108,
CVE-2020-10109)

Update instructions:

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

Ubuntu 14.04 ESM:
python-twisted 13.2.0-1ubuntu1.2+esm1
python-twisted-bin 13.2.0-1ubuntu1.2+esm1
python-twisted-web 13.2.0-1ubuntu1.2+esm1

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

References:
https://usn.ubuntu.com/4308-2
https://usn.ubuntu.com/4308-1
CVE-2019-12387, CVE-2019-12855, CVE-2020-10108, CVE-2020-10109
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