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Critical PHP DoS Vulnerabilities Addressed in Ubuntu 16.04 ESM USN-5006-2

ubuntu
Calendar Grey July 13, 2021
Dist Ubuntu Esm H88
Numerous PHP security flaws disclosed in Ubuntu Security Notice USN-5006-2, featuring potential Denial of Service issues.
Several security issues were fixed in PHP.

Summary

Several security issues were fixed in PHP.

Software Description:

- php7.0: HTML-embedded scripting language interpreter

- php5: HTML-embedded scripting language interpreter

Details:

USN-5006-1 fixed several vulnerabilities in PHP. This update provides

the corresponding update for Ubuntu 14.04 ESM and Ubuntu 16.04 ESM.

Original advisory details:

It was discovered that PHP incorrectly handled certain PHAR files. A remote

attacker could possibly use this issue to cause PHP to crash, resulting in

a denial of service, or possibly obtain sensitive information. (CVE-2020-7068)

It was discovered that PHP incorrectly handled parsing URLs with passwords.

A remote attacker could possibly use this issue to cause PHP to mis-parse

the URL and produce wrong data. (CVE-2020-7071)

It was discovered that PHP incorrectly handled certain malformed XML data

when being parsed by the SOAP extension. A remote attacker could possibly

use this issue to cause PHP to crash, resulting in a deni...

Read the Full Advisory

Topics%20covered

Topics Covered

security advisory denial of service critical php attack ubuntu issues

Update Instructions

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

Ubuntu 16.04 ESM:
  libapache2-mod-php7.0           7.0.33-0ubuntu0.16.04.16+esm1
  php7.0-cgi                      7.0.33-0ubuntu0.16.04.16+esm1
  php7.0-cli                      7.0.33-0ubuntu0.16.04.16+esm1
  php7.0-fpm                      7.0.33-0ubuntu0.16.04.16+esm1

Ubuntu 14.04 ESM:
  libapache2-mod-php5             5.5.9+dfsg-1ubuntu4.29+esm14
  php5-cgi                        5.5.9+dfsg-1ubuntu4.29+esm14
  php5-cli                        5.5.9+dfsg-1ubuntu4.29+esm14
  php5-fpm                        5.5.9+dfsg-1ubuntu4.29+esm14

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

References

https://ubuntu.com/security/notices/USN-5006-1

CVE-2020-7068, CVE-2020-7071, CVE-2021-21702, CVE-2021-21704,

CVE-2021-21705

Severity
critical
Lowest
Low
Medium
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Critical

July 13, 2021

Topics%20covered

Topics Covered

security advisory denial of service critical php attack ubuntu issues

Package Information

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