Multiple use-after-free vulnerabilities in libxml2 2.5.10, 2.6.16, 2.6.26, 2.6.27, and 2.6.32, and libxml 1.8.17, allow context-dependent attackers to cause a denial of service (application crash) via crafted (1) Notation or (2) Enumeration attribute types in an XML file, as demonstrated by the Codenomicon XML fuzzing framework.

The ACL plugin in Dovecot before 1.1.4 treats negative access rights as if they are positive access rights, which allows attackers to bypass intended access restrictions.

Devin Carraway of the Debian Security Team discovered that the upstream fix for the CVE-2008-2079 is incomplete and still makes it possible for local users to create tables via INDEX/DATA DIRECTORY directives in the MySQL data directory (/var/lib/mysql) via directory symlinks.

http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=480292#25

CVE-2008-2079 was tracked via bug bug #445222.

An attacker needs following to exploit this issue: - MySQL database account with privileges to create tables - shell access to the host running MySQL database with write access to a directory accessible by the mysqld daemon process

Heap-based buffer overflow in the xmlParseAttValueComplex function in parser.c in libxml2 before 2.7.0 allows context-dependent attackers to cause a denial of service (crash) or execute arbitrary code via a long XML entity name.

Will Drewry of the Google Security Team created a set of fuzzed OGG test files to test OGG Vorbis and Tremor implementations. Some of them were causing memory corruption and crash on old libvorbis versions (prior to 1.0).

Crash / corruption occurred in makedecodetree(). This function was removed prior to the release of upstream version 1.0 in following changes:

https://trac.xiph.org/changeset/2959 https://trac.xiph.org/changeset/2960

Test files do not crash libvobis revision 2960 or later.

The pollmodeio file for the megaraidsas driver in the Linux kernel 2.6.31.6 and earlier has world-writable permissions, which allows local users to change the I/O mode of the driver by modifying this file.

The connector layer in the Linux kernel before 2.6.31.5 does not require the CAPSYSADMIN capability for certain interaction with the (1) uvesafb, (2) pohmelfs, (3) dst, or (4) dm subsystem, which allows local users to bypass intended access restrictions and gain privileges via calls to functions in these subsystems.

net/unix/afunix.c in the Linux kernel 2.6.31.4 and earlier allows local users to cause a denial of service (system hang) by creating an abstract-namespace AFUNIX listening socket, performing a shutdown operation on this socket, and then performing a series of connect operations to this socket.

Multiple race conditions in fs/pipe.c in the Linux kernel before 2.6.32-rc6 allow local users to cause a denial of service (NULL pointer dereference and system crash) or gain privileges by attempting to open an anonymous pipe via a /proc//fd/ pathname.

Use-after-free vulnerability in the abstract file-descriptor handling interface in the cupsdDoSelect function in scheduler/select.c in the scheduler in cupsd in CUPS 1.3.7 and 1.3.10 allows remote attackers to cause a denial of service (daemon crash or hang) via a client disconnection during listing of a large number of print jobs, related to improperly maintaining a reference count. NOTE: some of these details are obtained from third party information.

Quote from http://patchwork.ozlabs.org/patch/35412/: Commit 9ef1d4c7c7aca1cd436612b6ca785b726ffb8ed8 introduced a typo in initialization.

Quoting from the upstream commit: Almost all r128's private ioctls require that the CCE state has already been initialised. However, most do not test that this has been done, and will proceed to dereference a null pointer. This may result in a security vulnerability, since some ioctls are unprivileged.

This adds a macro for the common initialisation test and changes all ioctl implementations that require prior initialisation to use that macro.

Also, r128doinitcce() does not test that the CCE state has not been initialised already. Repeated initialisation may lead to a crash or resource leak. This adds that test.

http://git.kernel.org/linus/7dc482dfeeeefcfd000d4271c4626937406756d7

Other references: http://secunia.com/advisories/36707/

The getrandomint function in drivers/char/random.c in the Linux kernel before 2.6.30 produces insufficiently random numbers, which allows attackers to predict the return value, and possibly defeat protection mechanisms based on randomization, via vectors that leverage the function's tendency to "return the same value over and over again for long stretches of time."

Description of problem: Three bytes of uninitialized kernel memory are currently leaked to user.

Upstream proposed patch: http://patchwork.ozlabs.org/patch/32830/

CVE request: http://article.gmane.org/gmane.comp.security.oss.general/2060

pam-auth-update for PAM, as used in Ubuntu 8.10 and 9.4, and Debian GNU/Linux, does not properly handle an "empty selection" for system authentication modules in certain rare configurations, which causes any attempt to be successful and allows remote attackers to bypass authentication.

Quoting upstream PostgreSQL security page: http://www.postgresql.org/support/security.html

If PostgreSQL is configured with LDAP authentication, and your LDAP configuration allows anonymous binds, it is possible for a user to authenticate themselves with an empty password.

Affected versions: 8.3, 8.2

Fixed in versions: 8.3.8, 8.2.14

Severity: A - A vulnerability that is exploitable for privilege escalation without requiring a prior login.

The Linux kernel before 2.6.31-rc7 does not initialize certain data structures within getname functions, which allows local users to read the contents of some kernel memory locations by calling getsockname on (1) an AFAPPLETALK socket, related to the atalkgetname function in net/appletalk/ddp.c; (2) an AFIRDA socket, related to the irdagetname function in net/irda/afirda.c; (3) an AFECONET socket, related to the econetgetname function in net/econet/afeconet.c; (4) an AFNETROM socket, related to the nrgetname function in net/netrom/afnetrom.c; (5) an AFROSE socket, related to the rosegetname function in net/rose/afrose.c; or (6) a raw CAN socket, related to the rawgetname function in net/can/raw.c.

Array index error in the gdthreadevent function in drivers/scsi/gdth.c in the Linux kernel before 2.6.32-rc8 allows local users to cause a denial of service or possibly gain privileges via a negative event index in an IOCTL request.

Description of problem: 1) NET: llc, zero sockaddrllc struct sllcarphrd member of sockaddrllc might not be changed. Zero sllc before copying to the above layer's structure.

http://git.kernel.org/linus/3480c63bdf008e9289aab94418f43b9592978fff http://git.kernel.org/linus/28e9fc592cb8c7a43e4d3147b38be6032a0e81bc http://milw0rm.com/exploits/9513

Note that LLC sockets are restricted to root since v2.6.25-rc9 (see commit 3480c63b).

2) can: Fix rawgetname() leak rawgetname() can leak 10 bytes of kernel memory to user

http://git.kernel.org/linus/e84b90ae5eb3c112d1f208964df1d8156a538289

Note that this was introduced in v2.6.25-rc1.

3) irda: Fix irdagetname() leak irdagetname() can leak kernel memory to user.

http://git.kernel.org/linus/09384dfc76e526c3993c09c42e016372dc9dd22c

4) appletalk: fix atalkgetname() leak atalkgetname() can leak 8 bytes of kernel memory to user

http://git.kernel.org/linus/3d392475c873c10c10d6d96b94d092a34ebd4791 http://milw0rm.com/exploits/9521

5) netrom: Fix nrgetname() leak nrgetname() can leak kernel memory to user.

http://git.kernel.org/linus/f6b97b29513950bfbf621a83d85b6f86b39ec8db

6) econet: Fix econetgetname() leak econetgetname() can leak kernel memory to user.

http://git.kernel.org/linus/80922bbb12a105f858a8f0abb879cb4302d0ecaa

7) rose: Fix rosegetname() leak rosegetname() can leak kernel memory to user.

http://git.kernel.org/linus/17ac2e9c58b69a1e25460a568eae1b0dc0188c25

CVE request: http://article.gmane.org/gmane.comp.security.oss.general/2029 http://article.gmane.org/gmane.comp.security.oss.general/2033

arch/x86/ia32/ia32entry.S in the Linux kernel before 2.6.31.4 on the x8664 platform does not clear certain kernel registers before a return to user mode, which allows local users to read register values from an earlier process by switching an ia32 process to 64-bit mode.

smbd in Samba 3.0 before 3.0.37, 3.2 before 3.2.15, 3.3 before 3.3.8, and 3.4 before 3.4.2 allows remote authenticated users to cause a denial of service (infinite loop) via an unanticipated oplock break notification reply packet.

Memory leak in the appletalk subsystem in the Linux kernel 2.4.x through 2.4.37.6 and 2.6.x through 2.6.31, when the appletalk and ipddp modules are loaded but the ipddp"N" device is not found, allows remote attackers to cause a denial of service (memory consumption) via IP-DDP datagrams.

The execve function in the Linux kernel, possibly 2.6.30-rc6 and earlier, does not properly clear the current->clearchildtid pointer, which allows local users to cause a denial of service (memory corruption) or possibly gain privileges via a clone system call with CLONECHILDSETTID or CLONECHILDCLEARTID enabled, which is not properly handled during thread creation and exit.

In his upcoming Blackhat paper and presentation Dan Kaminsky highlights some more issues he has found relating to SSL hash collisions and related vulnerabilities.

His second issue is all about inconsistencies in the interpretation of subject x509 names in certificates. Specifically "issue 2, attack 2c" regarding NULL terminators in a Common Name field. An attacker could create a malicious certificate containing a NULL, which, if they were able to get it signed, could confuse a client into accepting it by mistake.

According to the paper this is said to affect Firefox.

neon before 0.28.6, when OpenSSL or GnuTLS is used, does not properly handle a '\0' character in a domain name in the subject's Common Name (CN) field of an X.509 certificate, which allows man-in-the-middle attackers to spoof arbitrary SSL servers via a crafted certificate issued by a legitimate Certification Authority, a related issue to CVE-2009-2408.

The kvmarchvcpuioctlsetsregs function in the KVM in Linux kernel 2.6 before 2.6.30, when running on x86 systems, does not validate the page table root in a KVMSETSREGS call, which allows local users to cause a denial of service (crash or hang) via a crafted cr3 value, which triggers a NULL pointer dereference in the gfntormap function.

Multiple memory leaks in the dtls1processoutofseqmessage function in ssl/d1both.c in OpenSSL 0.9.8k and earlier 0.9.8 versions allow remote attackers to cause a denial of service (memory consumption) via DTLS records that (1) are duplicates or (2) have sequence numbers much greater than current sequence numbers, aka "DTLS fragment handling memory leak."

The dtls1retrievebufferedfragment function in ssl/d1both.c in OpenSSL before 1.0.0 Beta 2 allows remote attackers to cause a denial of service (NULL pointer dereference and daemon crash) via an out-of-sequence DTLS handshake message, related to a "fragment bug."

modproxyajp.c in the modproxyajp module in the Apache HTTP Server 2.2.11 allows remote attackers to obtain sensitive response data, intended for a client that sent an earlier POST request with no request body, via an HTTP request.

Multiple integer overflows in FreeType 2.3.9 and earlier allow remote attackers to execute arbitrary code via vectors related to large values in certain inputs in (1) smooth/ftsmooth.c, (2) sfnt/ttcmap.c, and (3) cff/cffload.c.