Ubuntu Security Notice USN-2694-1

29th July, 2015

pcre3 vulnerabilities

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

• Ubuntu 15.04
• Ubuntu 14.04 LTS
• Ubuntu 12.04 LTS

Summary

PCRE could be made to crash or run programs if it processed a
specially-crafted regular expression.

Software description

• pcre3
  – Perl 5 Compatible Regular Expression Library

Details

Michele Spagnuolo discovered that PCRE incorrectly handled certain regular
expressions. A remote attacker could use this issue to cause applications
using PCRE to crash, resulting in a denial of service, or possibly execute
arbitrary code. This issue only affected Ubuntu 14.04 LTS. (CVE-2014-8964)

Kai Lu discovered that PCRE incorrectly handled certain regular
expressions. A remote attacker could use this issue to cause applications
using PCRE to crash, resulting in a denial of service, or possibly execute
arbitrary code. This issue only affected Ubuntu 14.04 LTS and Ubuntu 15.04.
(CVE-2015-2325, CVE-2015-2326)

Wen Guanxing discovered that PCRE incorrectly handled certain regular
expressions. A remote attacker could use this issue to cause applications
using PCRE to crash, resulting in a denial of service, or possibly execute
arbitrary code. This issue only affected Ubuntu 15.04. (CVE-2015-3210)

It was discovered that PCRE incorrectly handled certain regular
expressions. A remote attacker could use this issue to cause applications
using PCRE to crash, resulting in a denial of service, or possibly execute
arbitrary code. This issue only affected Ubuntu 12.04 LTS and 14.04 LTS.
(CVE-2015-5073)

Update instructions

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

Ubuntu 15.04:

libpcre3

2:8.35-3.3ubuntu1.1

Ubuntu 14.04 LTS:

libpcre3

1:8.31-2ubuntu2.1

Ubuntu 12.04 LTS:

libpcre3

8.12-4ubuntu0.1

To update your system, please follow these instructions:
https://wiki.ubuntu.com/Security/Upgrades.

After a standard system update you need to restart applications using PCRE,
such as the Apache HTTP server and Nginx, to make all the necessary
changes.

References

CVE-2014-8964,

CVE-2015-2325,

CVE-2015-2326,

CVE-2015-3210,

CVE-2015-5073

Ubuntu Security Notice USN-2695-1

29th July, 2015

tidy vulnerabilities

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

• Ubuntu 15.04
• Ubuntu 14.04 LTS
• Ubuntu 12.04 LTS

Summary

HTML Tidy could be made to crash or run programs if it processed specially
crafted data.

Software description

• tidy
  – HTML syntax checker and reformatter

Details

Fernando Muñoz discovered that HTML Tidy incorrectly handled memory. If a
user or automated system were tricked into processing specially crafted
data, applications linked against HTML Tidy could be made to crash, leading
to a denial of service, or possibly execute arbitrary code.

Update instructions

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

Ubuntu 15.04:

libtidy-0.99-0

20091223cvs-1.4ubuntu0.1

Ubuntu 14.04 LTS:

libtidy-0.99-0

20091223cvs-1.2ubuntu1.1

Ubuntu 12.04 LTS:

libtidy-0.99-0

20091223cvs-1ubuntu2.1

To update your system, please follow these instructions:
https://wiki.ubuntu.com/Security/Upgrades.

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

References

CVE-2015-5522,

CVE-2015-5523