Ubuntu Essential and Critical Security Patch Updates - Page 370

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Ubuntu: X.org vulnerabilities

Ubuntu: X.org vulnerabilities

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Multiple overflows were discovered in the XFree86-Misc, XInput-Misc, TOG-CUP, EVI, and MIT-SHM extensions which did not correctly validate function arguments. An authenticated attacker could send specially crafted requests and gain root privileges.

Ubuntu: boost vulnerabilities

Ubuntu: boost vulnerabilities

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Will Drewry and Tavis Ormandy discovered that the boost library did not properly perform input validation on regular expressions. An attacker could send a specially crafted regular expression to an application linked against boost and cause a denial of service via application crash.

Ubuntu: libxml2 vulnerability USN-569-1

Ubuntu: libxml2 vulnerability USN-569-1

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Brad Fitzpatrick discovered that libxml2 did not correctly handle certain UTF-8 sequences. If a remote attacker were able to trick a user or automated system into processing a specially crafted XML document, the application linked against libxml2 could enter an infinite loop, leading to a denial of service via CPU resource consumption.

Ubuntu: PostgreSQL vulnerabilities

Ubuntu: PostgreSQL vulnerabilities

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Nico Leidecker discovered that PostgreSQL did not properly restrict dblink functions. An authenticated user could exploit this flaw to access arbitrary accounts and execute arbitrary SQL queries. (CVE-2007-3278, CVE-2007-6601)

Ubuntu: Dovecot vulnerability

Ubuntu: Dovecot vulnerability

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It was discovered that in very rare configurations using LDAP, Dovecot may reuse cached connections for users with the same password. As a result, a user may be able to login as another if the connection is reused. The default Ubuntu configuration of Dovecot was not vulnerable.

Ubuntu: CUPS vulnerabilities USN-563-1

Ubuntu: CUPS vulnerabilities USN-563-1

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Wei Wang discovered that the SNMP discovery backend did not correctly calculate the length of strings. If a user were tricked into scanning for printers, a remote attacker could send a specially crafted packet and possibly execute arbitrary code.

Ubuntu: pwlib vulnerability

Ubuntu: pwlib vulnerability

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Jose Miguel Esparza discovered that pwlib did not correctly handle large string lengths. A remote attacker could send specially crafted packets to applications linked against pwlib (e.g. Ekiga) causing them to crash, leading to a denial of service.

Ubuntu: opal vulnerability

Ubuntu: opal vulnerability

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Jose Miguel Esparza discovered that certain SIP headers were not correctly validated. A remote attacker could send a specially crafted packet to an application linked against opal (e.g. Ekiga) causing it to crash, leading to a denial of service.

Ubuntu: Linux kernel vulnerabilities USN-558-1

Ubuntu: Linux kernel vulnerabilities USN-558-1

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The minix filesystem did not properly validate certain filesystem values. If a local attacker could trick the system into attempting to mount a corrupted minix filesystem, the kernel could be made to hang for long periods of time, resulting in a denial of service. (CVE-2006-6058) Certain calculations in the hugetlb code were not correct. A local attacker could exploit this to cause a kernel panic, leading to a denial of service.

Ubuntu: Samba vulnerability USN-702-1

Ubuntu: Samba vulnerability USN-702-1

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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.

Ubuntu: Cairo regression

Ubuntu: Cairo regression

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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.

Ubuntu: Cairo regression USN-550-2

Ubuntu: Cairo regression USN-550-2

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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.

Ubuntu: e2fsprogs vulnerability

Ubuntu: e2fsprogs vulnerability

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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.

Ubuntu: Mono vulnerability

Ubuntu: Mono vulnerability

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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.

Ubuntu: Perl vulnerability

Ubuntu: Perl vulnerability

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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.

Ubuntu: Cairo vulnerability

Ubuntu: Cairo vulnerability

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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.

Ubuntu: PCRE vulnerabilities

Ubuntu: PCRE vulnerabilities

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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.

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