Advisory: Ubuntu Essential and Critical Security Patch Updates

Find the information you need for your favorite open source distribution .

LS Hmepg 337x500 34 Esm H200

Ubuntu: Samba vulnerability USN-702-1

data:image/svg+xml,%3Csvg%20xmlns=%22http://www.w3.org/2000/svg%22%20viewBox=%220%200%20100%20100%22%3E%3C/svg%3E

Alin Rad Pop discovered that Samba did not correctly check the size of reply packets to mailslot requests. If a server was configured with domain logon enabled, an unauthenticated remote attacker could send a specially crafted domain logon packet and execute arbitrary code or crash the Samba service. By default, domain logon is disabled in Ubuntu.

LS Hmepg 337x500 34 Esm H200

Ubuntu: Cairo regression

data:image/svg+xml,%3Csvg%20xmlns=%22http://www.w3.org/2000/svg%22%20viewBox=%220%200%20100%20100%22%3E%3C/svg%3E

USN-550-1 fixed vulnerabilities in Cairo. A bug in font glyph rendering was uncovered as a result of the new memory allocation routines. In certain situations, fonts containing characters with no width or height would not render any more. This update fixes the problem. We apologize for the inconvenience.

LS Hmepg 337x500 34 Esm H200

Ubuntu: Cairo regression USN-550-2

data:image/svg+xml,%3Csvg%20xmlns=%22http://www.w3.org/2000/svg%22%20viewBox=%220%200%20100%20100%22%3E%3C/svg%3E

Peter Valchev discovered that Cairo did not correctly decode PNG image data. By tricking a user or automated system into processing a specially crafted PNG with Cairo, a remote attacker could execute arbitrary code with user privileges.

LS Hmepg 337x500 34 Esm H200

Ubuntu: e2fsprogs vulnerability

data:image/svg+xml,%3Csvg%20xmlns=%22http://www.w3.org/2000/svg%22%20viewBox=%220%200%20100%20100%22%3E%3C/svg%3E

Rafal Wojtczuk discovered multiple integer overflows in e2fsprogs. If a user or automated system were tricked into fscking a malicious ext2/ext3 filesystem, a remote attacker could execute arbitrary code with the user's privileges.

LS Hmepg 337x500 34 Esm H200

Ubuntu: Mono vulnerability

data:image/svg+xml,%3Csvg%20xmlns=%22http://www.w3.org/2000/svg%22%20viewBox=%220%200%20100%20100%22%3E%3C/svg%3E

It was discovered that Mono did not correctly bounds check certain BigInteger actions. Remote attackers could exploit this to crash a Mono application or possibly execute arbitrary code with user privileges.

LS Hmepg 337x500 34 Esm H200

Ubuntu: Perl vulnerability

data:image/svg+xml,%3Csvg%20xmlns=%22http://www.w3.org/2000/svg%22%20viewBox=%220%200%20100%20100%22%3E%3C/svg%3E

It was discovered that Perl's regular expression library did not correctly handle certain UTF sequences. If a user or automated system were tricked into running a specially crafted regular expression, a remote attacker could crash the application or possibly execute arbitrary code with user privileges.

LS Hmepg 337x500 34 Esm H200

Ubuntu: Cairo vulnerability

data:image/svg+xml,%3Csvg%20xmlns=%22http://www.w3.org/2000/svg%22%20viewBox=%220%200%20100%20100%22%3E%3C/svg%3E

Peter Valchev discovered that Cairo did not correctly decode PNG image data. By tricking a user or automated system into processing a specially crafted PNG with Cairo, a remote attacker could execute arbitrary code with user privileges.

LS Hmepg 337x500 34 Esm H200

Ubuntu: PCRE vulnerabilities

data:image/svg+xml,%3Csvg%20xmlns=%22http://www.w3.org/2000/svg%22%20viewBox=%220%200%20100%20100%22%3E%3C/svg%3E

Tavis Ormandy and Will Drewry discovered multiple flaws in the regular expression handling of PCRE. By tricking a user or service into running specially crafted expressions via applications linked against libpcre3, a remote attacker could crash the application, monopolize CPU resources, or possibly execute arbitrary code with the application's privileges.

LS Hmepg 337x500 34 Esm H200

Ubuntu: link-grammar vulnerability

data:image/svg+xml,%3Csvg%20xmlns=%22http://www.w3.org/2000/svg%22%20viewBox=%220%200%20100%20100%22%3E%3C/svg%3E

Alin Rad Pop discovered that AbiWord's Link Grammar parser did not correctly handle overly-long words. If a user were tricked into opening a specially crafted document, AbiWord, or other applications using Link Grammar, could be made to crash.

LS Hmepg 337x500 34 Esm H200

Ubuntu: poppler vulnerabilities

data:image/svg+xml,%3Csvg%20xmlns=%22http://www.w3.org/2000/svg%22%20viewBox=%220%200%20100%20100%22%3E%3C/svg%3E

Secunia Research discovered several vulnerabilities in poppler. If a user were tricked into loading a specially crafted PDF file, a remote attacker could cause a denial of service or possibly execute arbitrary code with the user's privileges in applications linked against poppler.

LS Hmepg 337x500 34 Esm H200

Ubuntu: Emacs vulnerability

data:image/svg+xml,%3Csvg%20xmlns=%22http://www.w3.org/2000/svg%22%20viewBox=%220%200%20100%20100%22%3E%3C/svg%3E

Drake Wilson discovered that Emacs did not correctly handle the safe mode of "enable-local-variables". If a user were tricked into opening a specially crafted file while "enable-local-variables" was set to the non-default ":safe", a remote attacker could execute arbitrary commands with the user's privileges.

LS Hmepg 337x500 34 Esm H200

Ubuntu: flac vulnerability

data:image/svg+xml,%3Csvg%20xmlns=%22http://www.w3.org/2000/svg%22%20viewBox=%220%200%20100%20100%22%3E%3C/svg%3E

Sean de Regge discovered that flac did not properly perform bounds checking in many situations. An attacker could send a specially crafted FLAC audio file and execute arbitrary code as the user or cause a denial of service in flac or applications that link against flac.

LS Hmepg 337x500 34 Esm H200

Ubuntu: CUPS vulnerability USN-539-1

data:image/svg+xml,%3Csvg%20xmlns=%22http://www.w3.org/2000/svg%22%20viewBox=%220%200%20100%20100%22%3E%3C/svg%3E

Alin Rad Pop discovered that CUPS did not correctly validate buffer lengths when processing IPP tags. Remote attackers successfully exploiting this vulnerability would gain access to the non-root CUPS user in Ubuntu 6.06 LTS, 6.10, and 7.04. In Ubuntu 7.10, attackers would be isolated by the AppArmor CUPS profile.

LS Hmepg 337x500 34 Esm H200

Ubuntu: Compiz vulnerability

data:image/svg+xml,%3Csvg%20xmlns=%22http://www.w3.org/2000/svg%22%20viewBox=%220%200%20100%20100%22%3E%3C/svg%3E

USN-537-1 fixed vulnerabilities in gnome-screensaver. The fixes were incomplete, and only reduced the scope of the vulnerability, without fully solving it. This update fixes related problems in compiz. Original advisory details: Jens Askengren discovered that gnome-screensaver became confused when running under Compiz, and could lose keyboard lock focus. A local attacker could exploit this to bypass the user's locked screen saver.

LS Hmepg 337x500 34 Esm H200

Ubuntu: libpng vulnerabilities

data:image/svg+xml,%3Csvg%20xmlns=%22http://www.w3.org/2000/svg%22%20viewBox=%220%200%20100%20100%22%3E%3C/svg%3E

It was discovered that libpng did not properly perform bounds checking and comparisons in certain operations. An attacker could send a specially crafted PNG image and cause a denial of service in applications linked against libpng.

Get the Latest News & Insights

Sign up to get the latest security news affecting Linux and open source delivered straight to your inbox.

© 2024 Guardian Digital, Inc All Rights Reserved