Debian Security Advisory DSA-3323-1 email@example.com https://www.debian.org/security/ Laszlo Boszormenyi August 01, 2015 https://www.debian.org/security/faq
Package : icu CVE ID : CVE-2014-6585 CVE-2014-8146 CVE-2014-8147 CVE-2015-4760 Debian Bug : 778511 784773
Several vulnerabilities were discovered in the International Components for Unicode (ICU) library.
The Unicode Bidirectional Algorithm implementation does not properly track directionally isolated pieces of text, which allows remote attackers to cause a denial of service (heap-based buffer overflow) or possibly execute arbitrary code via crafted text.
The Unicode Bidirectional Algorithm implementation uses an integer data type that is inconsistent with a header file, which allows remote attackers to cause a denial of service (incorrect malloc followed by invalid free) or possibly execute arbitrary code via crafted text.
The Layout Engine was missing multiple boundary checks. These could lead to buffer overflows and memory corruption. A specially crafted file could cause an application using ICU to parse untrusted font files to crash and, possibly, execute arbitrary code.
Additionally, it was discovered that the patch applied to ICU in DSA-3187-1 for CVE-2014-6585 was incomplete, possibly leading to an invalid memory access. This could allow remote attackers to disclose portion of private memory via crafted font files.
For the oldstable distribution (wheezy), these problems have been fixed in version 22.214.171.124-12+deb7u3.
For the stable distribution (jessie), these problems have been fixed in version 52.1-8+deb8u2.
For the testing distribution (stretch), these problems have been fixed in version 52.1-10.
For the unstable distribution (sid), these problems have been fixed in version 52.1-10.
We recommend that you upgrade your icu packages.
Further information about Debian Security Advisories, how to apply these updates to your system and frequently asked questions can be found at: https://www.debian.org/security/
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