Heap-based buffer overflow in the unhtmlify function in foomatic-rip in foomatic-filters before 4.0.6 allows remote attackers to cause a denial of service (memory corruption and crash) or possibly execute arbitrary code via a long job title.

389 Directory Server in Red Hat Enterprise Linux Desktop 6 through 7, Red Hat Enterprise Linux HPC Node 6 through 7, Red Hat Enterprise Linux Server 6 through 7, and Red Hat Enterprise Linux Workstation 6 through 7 allows remote attackers to obtain user passwords.

Unspecified vulnerability in Oracle Java SE 7u97, 8u73, and 8u74 allows remote attackers to affect confidentiality, integrity, and availability via unknown vectors related to the Hotspot sub-component.

A denial of service flaw was found in the way OpenSSL parsed certain ASN.1-encoded data from BIO (OpenSSL's I/O abstraction) inputs. An application using OpenSSL that accepts untrusted ASN.1 BIO input could be forced to allocate an excessive amount of data.

Heap-based buffer overflow in SPICE before 0.12.6 allows guest OS users to cause a denial of service (heap-based memory corruption and QEMU-KVM crash) or possibly execute arbitrary code on the host via QXL commands related to the surfaceid parameter.

An integer overflow flaw, leading to a buffer overflow, was found in the way the EVPEncryptUpdate() function of OpenSSL parsed very large amounts of input data. A remote attacker could use this flaw to crash an application using OpenSSL or, possibly, execute arbitrary code with the permissions of the user running that application.

389 Directory Server in Red Hat Enterprise Linux Desktop 6 through 7, Red Hat Enterprise Linux HPC Node 6 through 7, Red Hat Enterprise Linux Server 6 through 7, and Red Hat Enterprise Linux Workstation 6 through 7 allows remote attackers to infer the existence of RDN component objects.

Incomplete blacklist vulnerability in util.c in foomatic-rip in cups-filters 1.0.42 before 1.2.0 and in foomatic-filters in Foomatic 4.0.x allows remote attackers to execute arbitrary commands via (backtick) characters in a print job.

Insomnia Security (as part of a pre-arranged commercial engagement) reports:

A vulnerability in libarchive exists that allows an archive Entry with type 1 (hardlink), but has a non-zero data size to cause a file overwrite. This vulnerability can be leveraged in a way that has a significant security impact (this was not clear at first during initial research by upstream).

It was discovered that sntp program would hang in an infinite loop when a crafted NTP packet was received, related to the conversion of the precision value in the packet to double.

It was found that ntpd exits with a segmentation fault when a statistics type that was not enabled during compilation (e.g. timingstats) is referenced by the statistics or filegen configuration command, for example:

ntpq -c ':config statistics timingstats' ntpq -c ':config filegen timingstats'

Upstream patch:

http://bk.ntp.org/ntp-dev/?PAGE=patch&REV=4d253ed0A400LyhRQIV0u23NJwuGAA

(in 4.2.6, the code than handles NULL == filegen needs to be adjusted as the outer loop was changed from while to for)

It was found that ntpd could crash due to an uninitialized variable when processing malformed logconfig configuration commands, for example:

ntpq -c ":config logconfig a"

Upstream patch:

http://bk.ntp.org/ntp-dev/?PAGE=patch&REV=4c4fc141LwvcoGp-lLGhkAFp3ZvtrA

It was found that ntpd did not correctly implement the -g option:

-g Normally, ntpd exits with a message to the system log if the offset exceeds the panic threshold, which is 1000 s by default. This option allows the time to be set to any value without restriction; however, this can happen only once. If the thresh‐ old is exceeded after that, ntpd will exit with a message to the system log. This option can be used with the -q and -x options. See the tinker command for other options.

ntpd could actually step the clock multiple times by more than the panic threshold if its clock discipline doesn't have enough time to reach the sync state and stay there for at least one update. If a man-in-the-middle attacker can control the NTP traffic since ntpd was started (or maybe up to 15-30 minutes after that), they can prevent the client from reaching the sync state and force it to step its clock by any amount any number of times, which can be used by attackers to expire certificates, etc.

This is contrary to what the documentation says. Normally, the assumption is that an MITM attacker can step the clock more than the panic threshold only once when ntpd starts and to make a larger adjustment the attacker has to divide it into multiple smaller steps, each taking 15 minutes, which is slow.

389 Directory Server in Red Hat Enterprise Linux Desktop 6 through 7, Red Hat Enterprise Linux HPC Node 6 through 7, Red Hat Enterprise Linux Server 6 through 7, and Red Hat Enterprise Linux Workstation 6 through 7 allows remote attackers to read the default Access Control Instructions.

A cpio archive with a ridiculously large symlink can cause memory allocation to fail, resulting in any attempt to view or extract the archive crashing. The failed allocation appears to be handled correctly within libarchive and not lead to further issues.

External references: https://github.com/libarchive/libarchive/issues/705

Upstream fix: https://github.com/libarchive/libarchive/commit/fd7e0c02

arch/x86/entry/entry64.S in the Linux kernel before 4.1.6 on the x8664 platform mishandles IRET faults in processing NMIs that occurred during userspace execution, which might allow local users to gain privileges by triggering an NMI.

ISC BIND 9.8.x through 9.8.4-P1 and 9.9.x through 9.9.2-P1, in certain configurations involving DNS64 with a Response Policy Zone that lacks an AAAA rewrite rule, allows remote attackers to cause a denial of service (assertion failure and named daemon exit) via a query for an AAAA record.

The LABEL coder in ImageMagick before 6.9.3-10 and 7.x before 7.0.1-1 allows remote attackers to read arbitrary files via a crafted image.

Heap-based buffer overflow in SPICE before 0.12.6 allows guest OS users to read and write to arbitrary memory locations on the host via guest QXL commands related to surface creation.

A vulnerability in libxml2 was found causing DoS by exhausting CPU when parsing specially crafted XML document.

Upstream bug:

https://bugzilla.gnome.org/showbug.cgi?id=756733

Andrea Palazzo reported the following problem affecting IcedTea-Web:

""" Permanent Trusted Applet Injection

Due to a lack of validation in the process of parsing non-standard uri schemes, it is possible to inject arbitrary trusted applets into the .appletTrustSettings configuration file.

An attacker could exploit this flaw to permanently authorize the execution of unsigned applets in the context of a victim browser from arbitrary domains. It should be noted that the exploit is triggered even if the victim hits the "cancel" button when the authorization view is prompted. """

Acknowledgement:

Name: Andrea Palazzo (Truel IT)

Hanno Böck has disclosed another Undefined Behaviour (signed integer overflow) on oss-security:

http://seclists.org/oss-sec/2016/q2/591

Upstream ticket:

https://github.com/libarchive/libarchive/issues/717

Upstream fix (released in libarchive-3.2.1):

https://github.com/libarchive/libarchive/commit/3ad08e0

While the UB exists in 3.2.0, an earlier patch seems to mitigate against the issue:

https://github.com/libarchive/libarchive/commit/e6c9668f

This function is called immediately after the overflow, and will immediately reject a negative skipsize with ARCHIVEFATAL, skipping all further processing.

Previous releases up to and including 3.1.2 (including 2.8.3, 2.8.4) do not include the mitigation and are thus likely vulnerable.

A buffer overread in xmlNextChar was found, causing segmentation fault when compiled with ASAN.

Upstream bug (contains reproducer):

https://bugzilla.gnome.org/showbug.cgi?id=756263

Upstream patch:

https://git.gnome.org/browse/libxml2/commit/?id=ab2b9a93ff19cedde7befbf2fcc48c6e352b6cbe

It was discovered that OpenSSL leaked timing information when decrypting TLS/SSL and DTLS protocol encrypted records when the connection used the AES CBC cipher suite and the server supported AES-NI. A remote attacker could possibly use this flaw to retrieve plain text from encrypted packets by using a TLS/SSL or DTLS server as a padding oracle.

It was discovered that the Security component of OpenJDK failed to properly check DSA (Digital Signature Algorithm) parameters. The use of keys with incorrect parameters could lead to disclosure of sensitive data.

Stack-based buffer overread vulnerability with HTML parser in push mode in xmlSAX2TextNode causing segmentation fault when compiled with ASAN.

Upstream bug (containing reproducer):

https://bugzilla.gnome.org/showbug.cgi?id=756372

It was discovered that the java-1.8.0-openjdk packages for Red Hat Enterprise Linux released via RHSA-2015:0809 (https://rhn.redhat.com/errata/RHSA-2015-0809.html) regressed the fix for the CVE-2015-0383 (bug 1123870) issue - "OpenJDK: insecure hsperfdata temporary file handling (Hotspot, 8050807)". This regression makes it possible to exploit the original issue and allow local attacker to make other users of OpenJDK 8 packages to overwrite arbitrary file via a symlink attack. Refer to bug 1123870 for technical details.

A specially crafted gzip file can cause libarchive to allocate memory without limit, eventually leading to a crash.

External references: https://github.com/libarchive/libarchive/issues/660

Upstream fix: https://github.com/libarchive/libarchive/commit/6e06b1c89

An out-of-bounds read in pngconverttorfc1123 in png.c was found.

Upstream bug:

http://sourceforge.net/p/libpng/bugs/241/

Upstream patch:

http://sourceforge.net/p/libpng/code/ci/fbf0f024346ca0a4ffc64b082a95c6b6bb6d29c4/

CVE assignment:

http://seclists.org/oss-sec/2015/q4/161

The moddavsvn Apache HTTPD server module in Apache Subversion 1.x before 1.7.19 and 1.8.x before 1.8.11 allows remote attackers to cause a denial of service (NULL pointer dereference and server crash) via a REPORT request for a resource that does not exist.