Security

Marc Deslauriers discovered that libcurl incorrectly verified CN and SAN name fields when digital signature verification was disabled in the GnuTLS backend. When libcurl is being used in this uncommon way by specific applications, an attacker could exploit this to perform a man in the middle attack to view sensitive information or alter encrypted communications.

DjVuLibre before 3.5.25.3, as used in Evince, Sumatra PDF Reader, VuDroid, and other products, allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption) via a crafted DjVu (aka .djv) file.

Genkin, Shamir and Tromer discovered that RSA key material could be extracted by using the sound generated by the computer during the decryption of some chosen ciphertexts.

New version with minor fixes and mitigating possible security issue.

The Linux kernel before 3.12.2 does not properly use the get_dumpable function, which allows local users to bypass intended ptrace restrictions or obtain sensitive information from IA64 scratch registers via a crafted application, related to kernel/ptrace.c and arch/ia64/include/asm/processor.h (CVE-2013-2929)

The perf_trace_event_perm function in kernel/trace/trace_event_perf.c in the Linux kernel before 3.12.2 does not properly restrict access to the perf subsystem, which allows local users to enable function tracing via a crafted application. (CVE-2013-2930)

Buffer overflow in the oz_cdev_write function in drivers/staging/ozwpan/ozcdev.c in the Linux kernel before 3.12 allows local users to cause a denial of service or possibly have unspecified other impact via a crafted write operation. (CVE-2013-4513)

Array index error in the kvm_vm_ioctl_create_vcpu function in virt/kvm/kvm_main.c in the KVM subsystem in the Linux kernel through 3.12.5 allows local users to gain privileges via a large id value (CVE-2013-4587)

The recalculate_apic_map function in arch/x86/kvm/lapic.c in the KVM subsystem in the Linux kernel through 3.12.5 allows guest OS users to cause a denial of service (host OS crash) via a crafted ICR write operation in x2apic mode. (CVE-2013-6376)

Buffer overflow in the qeth_snmp_command function in drivers/s390/net/qeth_core_main.c in the Linux kernel through 3.12.1 allows local users to cause a denial of service or possibly have unspecified other impact via an SNMP ioctl call with a length value that is incompatible with the command-buffer size. (CVE-2013-6381)

The aac_compat_ioctl function in drivers/scsi/aacraid/linit.c in the Linux kernel before 3.11.8 does not require the CAP_SYS_RAWIO capability, which allows local users to bypass intended access restrictions via a crafted ioctl call. (CVE-2013-6383)

Buffer overflow in the exitcode_proc_write function in arch/um/kernel/exitcode.c in the Linux kernel before 3.12 allows local users to cause a denial of service or possibly have unspecified other impact by leveraging root privileges for a write operation (CVE-2013-4512).

Multiple buffer overflows in drivers/staging/wlags49_h2/wl_priv.c in the Linux kernel before 3.12 allow local users to cause a denial of service or possibly have unspecified other impact by leveraging the CAP_NET_ADMIN capability and providing a long station-name string, related to the (1) wvlan_uil_put_info and (2) wvlan_set_station_nickname functions (CVE-2013-4514).

The bcm_char_ioctl function in drivers/staging/bcm/Bcmchar.c in the Linux kernel before 3.12 does not initialize a certain data structure, which allows local users to obtain sensitive information from kernel memory via an IOCTL_BCM_GET_DEVICE_DRIVER_INFO ioctl call (CVE-2013-4515).

The uio_mmap_physical function in drivers/uio/uio.c in the Linux kernel before 3.12 does not validate the size of a memory block, which allows local users to cause a denial of service (memory corruption) or possibly gain privileges via crafted mmap operations, a different vulnerability than CVE-2013-4511 (CVE-2013-6763).

From the Red Hat advisory:

A divide-by-zero flaw was found in the apic_get_tmcct() function in KVM's Local Advanced Programmable Interrupt Controller (LAPIC) implementation. A privileged guest user could use this flaw to crash the host. (CVE-2013-6367, Important)

A memory corruption flaw was discovered in the way KVM handled virtual APIC accesses that crossed a page boundary. A local, unprivileged user could use this flaw to crash the system or, potentially, escalate their privileges on the system. (CVE-2013-6368, Important)

This update fixes an rpath pointing to a location in /tmp that was found in two test programs (iodbctest and iodbctestw). This could have allowed a local attacker with write access to /tmp to add modified libraries (and execute arbitrary code) as any user running the test programs.

The LLVM package included binaries with an rpath pointing to the build location in /tmp. This allows an attacker with write access to /tmp to add modified libraries (and execute arbitrary code) as any user running the LLVM binaries. This updated package rebuilds LLVM to exclude the build directories from the rpath information.

An unspecified third-party database module for the Key Distribution Center (KDC) in MIT Kerberos 5 (aka krb5) 1.10.x allows remote authenticated users to cause a denial of service (NULL pointer dereference and daemon crash) via a crafted request, a different vulnerability than CVE-2013-1418.

From the Red Hat bugzilla entry:

The issue is that the built-in HTTP server failed to adequately sanitize request strings of malicious JavaScript. So by leveraging this issue, an attacker may be able to inject arbitrary cookies. The same issue could also cause arbitrary HTML and script code to be executed in a user's browser within the security context of the affected site. Input passed via requests to the "handle_request()" function (lib/HTTPServer.pm) is not properly sanitised before being returned to the user. This can be exploited to execute arbitrary HTML and script code in a user's browser session in context of an affected site.

From the Firefox advisory page:

Google security researcher Michal Zalewski reported issues with JPEG format image processing with Start Of Scan (SOS) and Define Huffman Table (DHT) markers in the libjpeg library. This could allow for the possible reading of arbitrary memory content as well as cross-domain image theft. (CVE-2013-6629, CVE-2013-6630)

A flaw was found in the way cumin enforced user roles, allowing an unprivileged cumin user to access a range of resources without having the appropriate role. A remote, authenticated attacker could use this flaw to access privileged information, and perform a variety of privileged operations. (CVE-2013-4404)

It was found that multiple forms in the cumin web interface did not protect against Cross-Site Request Forgery (CSRF) attacks. If a remote attacker could trick a user, who is logged into the cumin web interface, into visiting a specially crafted URL, the attacker could perform actions in the context of the logged in user. (CVE-2013-4405)

It was found that cumin did not properly escape input from the "Max allowance" field in the "Set limit" form of the cumin web interface. A remote attacker could use this flaw to perform cross-site scripting (XSS) attacks against victims by tricking them into visiting a specially crafted URL. (CVE-2013-4414)

A flaw was found in the way cumin parsed POST request data. A remote attacker could potentially use this flaw to perform SQL injection attacks on cumin's database. (CVE-2013-4461)

From the Red Hat bug report:

Due to incorrect use of strncmp() in the parser for this file, however, it would allow clients to connect so long as their IP address in ASCII representation would start with something in the ACL file; e.g., 198.51.100.12 would be allowed if 198.51.100.1 was listed.

Raphael Geissert discovered out-of-bounds memory read flaws in OpenJPEG. If a specially-crafted image were opened by an application linked against OpenJPEG, it could cause the application to crash or lead to information leaks.

From the Red Hat bug reports:

Pedraig Brady from Red Hat additionally discovered that OSSA 2013-012 did not fully address CVE-2013-2096 in the non-default case where use_cow_images=False, and malicious qcow images are being transferred from Glance. In that specific case, an authenticated user could still consume large amounts of disk space for each instance using the malicious image, potentially also resulting in a Denial of Service attack on Nova compute nodes. (CVE-2013-2096)

Bernhard M. Wiedemann from SUSE reported a vulnerability in Nova's control of the size of disk images. By using malicious compressed qcow2 disk images, an authenticated user may consume large amounts of disk space for each image, potentially resulting in a Denial of Service attack on Nova compute nodes. (CVE-2013-4463)

From the Mageia advisory:

Possible security bypass on admin page under certain circumstances and MariaDB (CVE-2013-6403).

From the Ubuntu advisory:

Stefan Esser discovered that PHP incorrectly parsed certificates. An attacker could use a malformed certificate to cause PHP to crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2013-6420)

It was discovered that PHP incorrectly handled DateInterval objects. An attacker could use this issue to cause PHP to crash, resulting in a denial of service. (CVE-2013-6712)

It was discovered that QXmlSimpleReader in Qt incorrectly handled XML entity expansion. An attacker could use this flaw to cause Qt applications to consume large amounts of resources, resulting in a denial of service.

Cross-site scripting (XSS) vulnerability in the number_to_currency helper in actionpack/lib/action_view/helpers/number_helper.rb in Ruby on Rails before 3.2.16 and 4.x before 4.0.2 allows remote attackers to inject arbitrary web script or HTML via the unit parameter.

Cross-site scripting (XSS) vulnerability in actionpack/lib/action_view/helpers/translation_helper.rb in the internationalization component in Ruby on Rails 3.x before 3.2.16 and 4.x before 4.0.2 allows remote attackers to inject arbitrary web script or HTML via a crafted string that triggers generation of a fallback string by the i18n gem. (CVE-2013-4491)

actionpack/lib/action_view/lookup_context.rb in Action View in Ruby on Rails 3.x before 3.2.16 and 4.x before 4.0.2 allows remote attackers to cause a denial of service (memory consumption) via a header containing an invalid MIME type that leads to excessive caching. (CVE-2013-6414)

actionpack/lib/action_dispatch/http/request.rb in Ruby on Rails before 3.2.16 and 4.x before 4.0.2 does not properly consider differences in parameter handling between the Active Record component and the JSON implementation, which allows remote attackers to bypass intended database-query restrictions and perform NULL checks or trigger missing WHERE clauses via a crafted request that leverages (1) third-party Rack middleware or (2) custom Rack middleware. NOTE: this vulnerability exists because of an incomplete fix for CVE-2013-0155. (CVE-2013-6417)

From the Novell bugzilla entry:

Agostino Sarubbo reported back in February that thttpd creates a world readable log file.

Local privilege escalation via secret rails tokens execution. This vulnerability was reported by joernchen of Phenoelit.

The Bluetooth HCI ACL dissector in Wireshark 1.10.x before 1.10.2 does not properly maintain a certain free list, which allows remote attackers to cause a denial of service (application crash) via a crafted packet that is not properly handled by the wmem_block_alloc function in epan/wmem/wmem_allocator_block.c.

The microcode on AMD 16h 00h through 0Fh processors does not properly handle the interaction between locked instructions and write-combined memory types, which allows local users to cause a denial of service (system hang) via a crafted application, aka the errata 793 issue.

Bryan Quigley discovered an integer underflow in the Xorg X server which could lead to denial of service or the execution of arbitrary code.

From the Novell bugzilla entry:

A fixed initialization vector (constant string) was used while encrypting the data. This opened the encrypted stream/data to plaintext attacks among others.

From the Red Hat bugzilla entry:

It is found that if a flexible user parameter is configured in the agent, including a newline in the parameters will execute newline section as a separate command even if UnsafeUserParameters are disabled.

This type of attack is known to be only possible from Zabbix server or Zabbix proxy systems that are explicitly allowed in the agent configuration. Only flexible user parameters are vulnerable, static ones are not.