ID CVE-2016-1882
Summary FreeBSD 9.3 before p33, 10.1 before p26, and 10.2 before p9 allow remote attackers to cause a denial of service (kernel crash) via vectors related to creating a TCP connection with the TCP_MD5SIG and TCP_NOOPT socket options.
References
Vulnerable Configurations
  • FreeBSD 10.2
    cpe:2.3:o:freebsd:freebsd:10.2
  • FreeBSD 9.3 -
    cpe:2.3:o:freebsd:freebsd:9.3
  • FreeBSD 10.1 -
    cpe:2.3:o:freebsd:freebsd:10.1
CVSS
Base: 7.8 (as of 01-03-2016 - 11:17)
Impact:
Exploitability:
CWE CWE-19
CAPEC
  • Overflow Buffers
    Buffer Overflow attacks target improper or missing bounds checking on buffer operations, typically triggered by input injected by an attacker. As a consequence, an attacker is able to write past the boundaries of allocated buffer regions in memory, causing a program crash or potentially redirection of execution as per the attackers' choice.
  • XML Nested Payloads
    Applications often need to transform data in and out of the XML format by using an XML parser. It may be possible for an attacker to inject data that may have an adverse effect on the XML parser when it is being processed. By nesting XML data and causing this data to be continuously self-referential, an attacker can cause the XML parser to consume more resources while processing, causing excessive memory consumption and CPU utilization. An attacker's goal is to leverage parser failure to his or her advantage. In most cases this type of an attack will result in a denial of service due to an application becoming unstable, freezing, or crash. However it may be possible to cause a crash resulting in arbitrary code execution, leading to a jump from the data plane to the control plane [R.230.1].
  • XML Oversized Payloads
    Applications often need to transform data in and out of the XML format by using an XML parser. It may be possible for an attacker to inject data that may have an adverse effect on the XML parser when it is being processed. By supplying oversized payloads in input vectors that will be processed by the XML parser, an attacker can cause the XML parser to consume more resources while processing, causing excessive memory consumption and CPU utilization, and potentially cause execution of arbitrary code. An attacker's goal is to leverage parser failure to his or her advantage. In many cases this type of an attack will result in a denial of service due to an application becoming unstable, freezing, or crash. However it is possible to cause a crash resulting in arbitrary code execution, leading to a jump from the data plane to the control plane [R.231.1].
  • XML Client-Side Attack
    Client applications such as web browsers that process HTML data often need to transform data in and out of the XML format by using an XML parser. It may be possible for an attacker to inject data that may have an adverse effect on the XML parser when it is being processed. These adverse effects may include the parser crashing, consuming too much of a resource, executing too slowly, executing code supplied by an attacker, allowing usage of unintended system functionality, etc. An attacker's goal is to leverage parser failure to his or her advantage. In some cases it may be possible to jump from the data plane to the control plane via bad data being passed to an XML parser. [R.484.1]
  • XML Parser Attack
    Applications often need to transform data in and out of the XML format by using an XML parser. It may be possible for an attacker to inject data that may have an adverse effect on the XML parser when it is being processed. These adverse effects may include the parser crashing, consuming too much of a resource, executing too slowly, executing code supplied by an attacker, allowing usage of unintended system functionality, etc. An attacker's goal is to leverage parser failure to his or her advantage. In some cases it may be possible to jump from the data plane to the control plane via bad data being passed to an XML parser. [R.99.1]
Access
VectorComplexityAuthentication
NETWORK LOW NONE
Impact
ConfidentialityIntegrityAvailability
NONE NONE COMPLETE
nessus via4
  • NASL family FreeBSD Local Security Checks
    NASL id FREEBSD_PKG_79DFC135600A11E6A6C314DAE9D210B8.NASL
    description A programming error in processing a TCP connection with both TCP_MD5SIG and TCP_NOOPT socket options may lead to kernel crash. Impact : A local attacker can crash the kernel, resulting in a denial-of-service. A remote attack is theoretically possible, if server has a listening socket with TCP_NOOPT set, and server is either out of SYN cache entries, or SYN cache is disabled by configuration.
    last seen 2019-02-21
    modified 2018-12-07
    plugin id 92918
    published 2016-08-12
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=92918
    title FreeBSD : FreeBSD -- TCP MD5 signature denial of service (79dfc135-600a-11e6-a6c3-14dae9d210b8)
  • NASL family Firewalls
    NASL id PFSENSE_SA-16_02.NASL
    description According to its self-reported version number, the remote pfSense install is prior to 2.3. It is, therefore, affected by multiple vulnerabilities.
    last seen 2019-02-21
    modified 2018-09-17
    plugin id 106499
    published 2018-01-31
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=106499
    title pfSense < 2.3 Multiple Vulnerabilities (SA-16_01 - SA-16_02)
refmap via4
freebsd FreeBSD-SA-16:05
sectrack 1034677
Last major update 01-03-2016 - 19:14
Published 29-01-2016 - 14:59
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