Redhat » Enterprise Linux : Security Vulnerabilities, CVEs, Published In 2017

In Apache Log4j 2.x before 2.8.2, when using the TCP socket server or UDP socket server to receive serialized log events from another application, a specially crafted binary payload can be sent that, when deserialized, can execute arbitrary code.

Adobe Flash Player versions 25.0.0.148 and earlier have an exploitable memory corruption vulnerability in the Advanced Video Coding engine. Successful exploitation could lead to arbitrary code execution.

Adobe Flash Player versions 25.0.0.148 and earlier have an exploitable memory corruption vulnerability in the BlendMode class. Successful exploitation could lead to arbitrary code execution.

Adobe Flash Player versions 25.0.0.148 and earlier have an exploitable memory corruption vulnerability in the ConvolutionFilter class. Successful exploitation could lead to arbitrary code execution.

Adobe Flash Player versions 25.0.0.148 and earlier have an exploitable use after free vulnerability when masking display objects. Successful exploitation could lead to arbitrary code execution.

Adobe Flash Player versions 25.0.0.148 and earlier have an exploitable memory corruption vulnerability in the BitmapData class. Successful exploitation could lead to arbitrary code execution.

Adobe Flash Player versions 25.0.0.148 and earlier have an exploitable use after free vulnerability when handling multiple mask properties of display objects, aka memory corruption. Successful exploitation could lead to arbitrary code execution.

Adobe Flash Player versions 25.0.0.148 and earlier have an exploitable memory corruption vulnerability in the Graphics class. Successful exploitation could lead to arbitrary code execution.

Adobe Flash Player versions 26.0.0.137 and earlier have an exploitable type confusion vulnerability when parsing SWF files. Successful exploitation could lead to arbitrary code execution.

A security-check flaw was found in the way the Heketi 5 server API handled user requests. An authenticated Heketi user could send specially crafted requests to the Heketi server, resulting in remote command execution as the user running Heketi server and possibly privilege escalation.

Cross-site request forgery (CSRF) vulnerability in pcsd web UI in pcs before 0.9.149.

The cjpeg utility in libjpeg allows remote attackers to cause a denial of service (NULL pointer dereference and application crash) or execute arbitrary code via a crafted file.

Session fixation vulnerability in pcsd in pcs before 0.9.157.

pkexec, when used with --user nonpriv, allows local users to escape to the parent session via a crafted TIOCSTI ioctl call, which pushes characters to the terminal's input buffer.

Stack-based buffer overflow in native/mod_manager/node.c in mod_cluster 1.2.9.

An access flaw was found in Heketi 5, where the heketi.json configuration file was world readable. An attacker having local access to the Heketi server could read plain-text passwords from the heketi.json file.

Linux kernel: heap out-of-bounds in AF_PACKET sockets. This new issue is analogous to previously disclosed CVE-2016-8655. In both cases, a socket option that changes socket state may race with safety checks in packet_set_ring. Previously with PACKET_VERSION. This time with PACKET_RESERVE. The solution is similar: lock the socket for the update. This issue may be exploitable, we did not investigate further. As this issue affects PF_PACKET sockets, it requires CAP_NET_RAW in the process namespace. But note that with user namespaces enabled, any process can create a namespace in which it has CAP_NET_RAW.

Linux distributions that have not patched their long-term kernels with https://git.kernel.org/linus/a87938b2e246b81b4fb713edb371a9fa3c5c3c86 (committed on April 14, 2015). This kernel vulnerability was fixed in April 2015 by commit a87938b2e246b81b4fb713edb371a9fa3c5c3c86 (backported to Linux 3.10.77 in May 2015), but it was not recognized as a security threat. With CONFIG_ARCH_BINFMT_ELF_RANDOMIZE_PIE enabled, and a normal top-down address allocation strategy, load_elf_binary() will attempt to map a PIE binary into an address range immediately below mm->mmap_base. Unfortunately, load_elf_ binary() does not take account of the need to allocate sufficient space for the entire binary which means that, while the first PT_LOAD segment is mapped below mm->mmap_base, the subsequent PT_LOAD segment(s) end up being mapped above mm->mmap_base into the are that is supposed to be the "gap" between the stack and the binary.

glibc contains a vulnerability that allows specially crafted LD_LIBRARY_PATH values to manipulate the heap/stack, causing them to alias, potentially resulting in arbitrary code execution. Please note that additional hardening changes have been made to glibc to prevent manipulation of stack and heap memory but these issues are not directly exploitable, as such they have not been given a CVE. This affects glibc 2.25 and earlier.

Race condition in fs/timerfd.c in the Linux kernel before 4.10.15 allows local users to gain privileges or cause a denial of service (list corruption or use-after-free) via simultaneous file-descriptor operations that leverage improper might_cancel queueing.

The find_ifcfg_path function in netcf before 0.2.7 might allow attackers to cause a denial of service (application crash) via vectors involving augeas path expressions.

There is an invalid free in Image::printIFDStructure that leads to a Segmentation fault in Exiv2 0.26. A crafted input will lead to a remote denial of service attack.

Adobe Flash Player versions 26.0.0.137 and earlier have a security bypass vulnerability that leads to information disclosure when performing URL redirect.

Multiple integer overflows in the block drivers in QEMU, possibly before 2.0.0, allow local users to cause a denial of service (crash) via a crafted catalog size in (1) the parallels_open function in block/parallels.c or (2) bochs_open function in bochs.c, a large L1 table in the (3) qcow2_snapshot_load_tmp in qcow2-snapshot.c or (4) qcow2_grow_l1_table function in qcow2-cluster.c, (5) a large request in the bdrv_check_byte_request function in block.c and other block drivers, (6) crafted cluster indexes in the get_refcount function in qcow2-refcount.c, or (7) a large number of blocks in the cloop_open function in cloop.c, which trigger buffer overflows, memory corruption, large memory allocations and out-of-bounds read and writes.

libffi requests an executable stack allowing attackers to more easily trigger arbitrary code execution by overwriting the stack. Please note that libffi is used by a number of other libraries. It was previously stated that this affects libffi version 3.2.1 but this appears to be incorrect. libffi prior to version 3.1 on 32 bit x86 systems was vulnerable, and upstream is believed to have fixed this issue in version 3.1.