SB2018041709 - Red Hat update for kernel-rt
Published: April 17, 2018
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 7 secuirty vulnerabilities.
1) Use-after-free error (CVE-ID: CVE-2017-8824)
The vulnerability allows a local attacker to gain elevated privileges or cause DoS condition on the target system.The weakness exists due to an error in the dccp_disconnect function in net/dccp/proto.c in the Linux kernel. A local attacker can make specially crafted AF_UNSPEC connect system call during the DCCP_LISTEN state, trigger use-after-free error and gain root privileges or cause the system to crash.
2) Uncontrolled memory allocation (CVE-ID: CVE-2017-9725)
The vulnerability allows a local attacker to case DoS condition or gain elevated privileges on the target system.The weakness exists in all Qualcomm products with Android releases from CAF during DMA allocation due to wrong data type of size allocation size gets truncated which makes allocation succeed when it should fail. A local attacker can cause the service to crash or gain root privileges.
3) Privilege escalation (CVE-ID: CVE-2017-13166)
The vulnerability allows a local attacker to gain elevated privileges on the target system.The weakness exists in the V4L2 video driver component of the Google Android kernel due to insufficient validation of user-supplied input. A local attacker can use a specially crafted application and execute arbitrary code with elevated privileges.
Successful exploitation of the vulnerability may result in system compromise.
4) Use-after-free (CVE-ID: CVE-2017-15265)
The vulnerability allows a local attacker to gain elevated privileges on the target system.
The vulnerability exists due to use-after-free error in the ALSA sequencer interface (/dev/snd/seq). A local attacker can run a specially crafted application, trigger memory corruption and execute arbitrary code with root privileges.
Successful exploitation of the vulnerability may result in system compromise.
5) Information disclosure (CVE-ID: CVE-2017-17449)
The vulnerability allows a local attacker to obtain potentially sensitive information on the target system.The weakness exists due to the __netlink_deliver_tap_skb function in net/netlink/af_netlink.c in the Linux kernel, when CONFIG_NLMON is enabled, does not restrict observations of Netlink messages to a single net namespace. A local attacker can leverage the CAP_NET_ADMIN capability to sniff an nlmon interface for all Netlink activity on the system and read arbitrary files.
6) Use-after-free error (CVE-ID: CVE-2017-18017)
The vulnerability allows a remote attacker to cause DoS condition no the target system.The weakness exists in the tcpmss_mangle_packet function in net/netfilter/xt_TCPMSS.c in the Linux kernel due to use-after-free error. A remote attacker can leverage the presence of xt_TCPMSS in an iptables action, trigger memory corruption and cause the system to crash.
7) Information disclosure (CVE-ID: CVE-2017-1000410)
The vulnerability allows a remote attacker to obtain potentially sensitive information on the target system.The weakness exists due to a flaw when processing the incoming of L2CAP commands, ConfigRequest and ConfigResponse messages. A remote attacker can manipulate the code flows that precede the handling of the configuration messages and read important data.
Remediation
Install update from vendor's website.